commit - f3807fe5829048c18652abf3e9c2b5f0bb3d0599
commit + 97a02382bf83b5671f51d8792459968edd9a38ba
blob - /dev/null
blob + 3a08950d455ea0bc1854f88ea4f006059b16a199 (mode 644)
--- /dev/null
+++ cvg/Makefile
@@ -0,0 +1,40 @@
+.PATH:${.CURDIR}/../lib
+
+.include "../got-version.mk"
+
+PROG=		got
+SRCS=		got.c blame.c commit_graph.c delta.c diff.c \
+		diffreg.c error.c fileindex.c object.c object_cache.c \
+		object_idset.c object_parse.c opentemp.c path.c pack.c \
+		privsep.c reference.c repository.c hash.c worktree.c \
+		worktree_open.c inflate.c buf.c rcsutil.c diff3.c lockfile.c \
+		deflate.c object_create.c delta_cache.c fetch.c \
+		gotconfig.c diff_main.c diff_atomize_text.c \
+		diff_myers.c diff_output.c diff_output_plain.c \
+		diff_output_unidiff.c diff_output_edscript.c \
+		diff_patience.c send.c deltify.c pack_create.c dial.c \
+		bloom.c murmurhash2.c ratelimit.c patch.c sigs.c date.c \
+		object_open_privsep.c read_gitconfig_privsep.c \
+		read_gotconfig_privsep.c pack_create_privsep.c pollfd.c \
+		reference_parse.c object_qid.c
+
+MAN =		${PROG}.1 got-worktree.5 git-repository.5 got.conf.5
+
+CPPFLAGS = -I${.CURDIR}/../include -I${.CURDIR}/../lib
+
+.if defined(PROFILE)
+LDADD = -lutil_p -lz_p -lm_p -lc_p
+.else
+LDADD = -lutil -lz -lm
+.endif
+DPADD = ${LIBZ} ${LIBUTIL} ${LIBM}
+
+.if ${GOT_RELEASE} != "Yes"
+NOMAN = Yes
+.endif
+
+realinstall:
+	${INSTALL} ${INSTALL_COPY} -o ${BINOWN} -g ${BINGRP} \
+	-m ${BINMODE} ${PROG} ${BINDIR}/${PROG}
+
+.include <bsd.prog.mk>
blob - /dev/null
blob + ea3b833f1bc15d5ea3e276e75da0a16f1e29702c (mode 644)
--- /dev/null
+++ cvg/cvg.1
@@ -0,0 +1,3817 @@
+.\"
+.\" Copyright (c) 2017 Martin Pieuchot
+.\" Copyright (c) 2018, 2019, 2020 Stefan Sperling
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd $Mdocdate$
+.Dt GOT 1
+.Os
+.Sh NAME
+.Nm got
+.Nd Game of Trees
+.Sh SYNOPSIS
+.Nm
+.Op Fl hV
+.Ar command
+.Op Ar arg ...
+.Sh DESCRIPTION
+.Nm
+is a version control system which stores the history of tracked files
+in a Git repository, as used by the Git version control system.
+This repository format is described in
+.Xr git-repository 5 .
+.Pp
+.Nm
+is a
+.Dq distributed
+version control system because every copy of a repository is writeable.
+Modifications made to files can be synchronized between repositories
+at any time.
+.Pp
+Files managed by
+.Nm
+must be checked out from the repository for modification.
+Checked out files are stored in a
+.Em work tree
+which can be placed at an arbitrary directory in the filesystem hierarchy.
+The on-disk format of this work tree is described in
+.Xr got-worktree 5 .
+.Pp
+.Nm
+provides global and command-specific options.
+Global options must precede the command name, and are as follows:
+.Bl -tag -width tenletters
+.It Fl h
+Display usage information and exit immediately.
+.It Fl V , -version
+Display program version and exit immediately.
+.El
+.Pp
+The commands for
+.Nm
+are as follows:
+.Bl -tag -width checkout
+.Tg im
+.It Xo
+.Cm import
+.Op Fl b Ar branch
+.Op Fl I Ar pattern
+.Op Fl m Ar message
+.Op Fl r Ar repository-path
+.Ar directory
+.Xc
+.Dl Pq alias: Cm im
+Create an initial commit in a repository from the file hierarchy
+within the specified
+.Ar directory .
+The created commit will not have any parent commits, i.e. it will be a
+root commit.
+Also create a new reference which provides a branch name for the newly
+created commit.
+Show the path of each imported file to indicate progress.
+.Pp
+The
+.Cm got import
+command requires the
+.Ev GOT_AUTHOR
+environment variable to be set,
+unless an author has been configured in
+.Xr got.conf 5
+or Git's
+.Dv user.name
+and
+.Dv user.email
+configuration settings can be obtained from the repository's
+.Pa .git/config
+file or from Git's global
+.Pa ~/.gitconfig
+configuration file.
+.Pp
+The options for
+.Cm got import
+are as follows:
+.Bl -tag -width Ds
+.It Fl b Ar branch
+Create the specified
+.Ar branch .
+If this option is not specified, a branch corresponding to the repository's
+HEAD reference will be used.
+Use of this option is required if the branch resolved via the repository's
+HEAD reference already exists.
+.It Fl I Ar pattern
+Ignore files or directories with a name which matches the specified
+.Ar pattern .
+This option may be specified multiple times to build a list of ignore patterns.
+The
+.Ar pattern
+follows the globbing rules documented in
+.Xr glob 7 .
+Ignore patterns which end with a slash,
+.Dq / ,
+will only match directories.
+.It Fl m Ar message
+Use the specified log message when creating the new commit.
+Without the
+.Fl m
+option,
+.Cm got import
+opens a temporary file in an editor where a log message can be written.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+.El
+.Tg cl
+.It Xo
+.Cm clone
+.Op Fl almqv
+.Op Fl b Ar branch
+.Op Fl R Ar reference
+.Ar repository-URL
+.Op Ar directory
+.Xc
+.Dl Pq alias: Cm cl
+Clone a Git repository at the specified
+.Ar repository-URL
+into the specified
+.Ar directory .
+If no
+.Ar directory
+is specified, the directory name will be derived from the name of the
+cloned repository.
+.Cm got clone
+will refuse to run if the
+.Ar directory
+already exists.
+.Pp
+The
+.Ar repository-URL
+specifies a protocol scheme, a server hostname, an optional port number
+separated from the hostname by a colon, and a path to the repository on
+the server:
+.Lk scheme://hostname:port/path/to/repository
+.Pp
+The following protocol schemes are supported:
+.Bl -tag -width git+ssh
+.It git
+The Git protocol as implemented by the
+.Xr git-daemon 1
+server.
+Use of this protocol is discouraged since it supports neither authentication
+nor encryption.
+.It git+ssh
+The Git protocol wrapped in an authenticated and encrypted
+.Xr ssh 1
+tunnel.
+With this protocol the hostname may contain an embedded username for
+.Xr ssh 1
+to use:
+.Mt user@hostname
+.It ssh
+Short alias for git+ssh.
+.El
+.Pp
+Objects in the cloned repository are stored in a pack file which is downloaded
+from the server.
+This pack file will then be indexed to facilitate access to the objects stored
+within.
+If any objects in the pack file are stored in deltified form, all deltas will
+be fully resolved in order to compute the ID of such objects.
+This can take some time.
+More details about the pack file format are documented in
+.Xr git-repository 5 .
+.Pp
+.Cm got clone
+creates a remote repository entry in the
+.Xr got.conf 5
+and
+.Pa config
+files of the cloned repository to store the
+.Ar repository-url
+and any
+.Ar branch
+or
+.Ar reference
+arguments for future use by
+.Cm got fetch
+or
+.Xr git-fetch 1 .
+.Pp
+The options for
+.Cm got clone
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Fetch all branches from the remote repository's
+.Dq refs/heads/
+reference namespace and set
+.Cm fetch_all_branches
+in the cloned repository's
+.Xr got.conf 5
+file for future use by
+.Cm got fetch .
+If this option is not specified, a branch resolved via the remote
+repository's HEAD reference will be fetched.
+Cannot be used together with the
+.Fl b
+option.
+.It Fl b Ar branch
+Fetch the specified
+.Ar branch
+from the remote repository's
+.Dq refs/heads/
+reference namespace.
+This option may be specified multiple times to build a list of branches
+to fetch.
+If the branch corresponding to the remote repository's HEAD reference is not
+in this list, the cloned repository's HEAD reference will be set to the first
+branch which was fetched.
+If this option is not specified, a branch resolved via the remote
+repository's HEAD reference will be fetched.
+Cannot be used together with the
+.Fl a
+option.
+.It Fl l
+List branches and tags available for fetching from the remote repository
+and exit immediately.
+Cannot be used together with any of the other options except
+.Fl q
+and
+.Fl v .
+.It Fl m
+Create the cloned repository as a mirror of the original repository.
+This is useful if the cloned repository will not be used to store
+locally created commits.
+.Pp
+The repository's
+.Xr got.conf 5
+and
+.Pa config
+files will be set up with the
+.Dq mirror
+option enabled, such that
+.Cm got fetch
+or
+.Xr git-fetch 1
+will write incoming changes directly to branches in the
+.Dq refs/heads/
+reference namespace, rather than to branches in the
+.Dq refs/remotes/
+namespace.
+This avoids the usual requirement of having to run
+.Cm got rebase
+or
+.Cm got merge
+after
+.Cm got fetch
+in order to make incoming changes appear on branches in the
+.Dq refs/heads/
+namespace.
+But maintaining custom changes in the cloned repository becomes difficult
+since such changes will be at risk of being discarded whenever incoming
+changes are fetched.
+.It Fl q
+Suppress progress reporting output.
+The same option will be passed to
+.Xr ssh 1
+if applicable.
+.It Fl R Ar reference
+In addition to the branches and tags that will be fetched, fetch an arbitrary
+.Ar reference
+from the remote repository's
+.Dq refs/
+namespace.
+This option may be specified multiple times to build a list of additional
+references to fetch.
+The specified
+.Ar reference
+may either be a path to a specific reference, or a reference namespace
+which will cause all references in this namespace to be fetched.
+.Pp
+Each reference will be mapped into the cloned repository's
+.Dq refs/remotes/
+namespace, unless the
+.Fl m
+option is used to mirror references directly into the cloned repository's
+.Dq refs/
+namespace.
+.Pp
+.Cm got clone
+will refuse to fetch references from the remote repository's
+.Dq refs/remotes/
+or
+.Dq refs/got/
+namespace.
+.It Fl v
+Verbose mode.
+Causes
+.Cm got clone
+to print debugging messages to standard error output.
+This option will be passed to
+.Xr ssh 1
+if applicable.
+Multiple -v options increase the verbosity.
+The maximum is 3.
+.El
+.Tg fe
+.It Xo
+.Cm fetch
+.Op Fl adlqtvX
+.Op Fl b Ar branch
+.Op Fl R Ar reference
+.Op Fl r Ar repository-path
+.Op Ar remote-repository
+.Xc
+.Dl Pq alias: Cm fe
+Fetch new changes from a remote repository.
+If no
+.Ar remote-repository
+is specified,
+.Dq origin
+will be used.
+The remote repository's URL is obtained from the corresponding entry in
+.Xr got.conf 5
+or Git's
+.Pa config
+file of the local repository, as created by
+.Cm got clone .
+.Pp
+By default, any branches configured in
+.Xr got.conf 5
+for the
+.Ar remote-repository
+will be fetched.
+If
+.Cm got fetch
+is invoked in a work tree then this work tree's current branch will be
+fetched, too, provided it is present on the server.
+If no branches to fetch can be found in
+.Xr got.conf 5
+or via a work tree, or said branches are not found on the server, a branch
+resolved via the remote repository's HEAD reference will be fetched.
+Likewise, if a HEAD reference for the
+.Ar remote-repository
+exists but its target no longer matches the remote HEAD, then
+the new target branch will be fetched.
+This default behaviour can be overridden with the
+.Fl a
+and
+.Fl b
+options.
+.Pp
+New changes will be stored in a separate pack file downloaded from the server.
+Optionally, separate pack files stored in the repository can be combined with
+.Xr git-repack 1 .
+.Pp
+By default, branch references in the
+.Dq refs/remotes/
+reference namespace will be updated to point at the newly fetched commits.
+The
+.Cm got rebase
+or
+.Cm got merge
+command can then be used to make new changes visible on branches in the
+.Dq refs/heads/
+namespace, merging incoming changes with the changes on those branches
+as necessary.
+.Pp
+If the repository was created as a mirror with
+.Cm got clone -m ,
+then all branches in the
+.Dq refs/heads/
+namespace will be updated directly to match the corresponding branches in
+the remote repository.
+If those branches contained local commits, these commits will no longer be
+reachable via a reference and will therefore be at risk of being discarded
+by Git's garbage collector or
+.Cm gotadmin cleanup .
+Maintaining custom changes in a mirror repository is therefore discouraged.
+.Pp
+In any case, references in the
+.Dq refs/tags/
+namespace will always be fetched and mapped directly to local references
+in the same namespace.
+.Pp
+The options for
+.Cm got fetch
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Fetch all branches from the remote repository's
+.Dq refs/heads/
+reference namespace.
+This option can be enabled by default for specific repositories in
+.Xr got.conf 5 .
+Cannot be used together with the
+.Fl b
+option.
+.It Fl b Ar branch
+Fetch the specified
+.Ar branch
+from the remote repository's
+.Dq refs/heads/
+reference namespace.
+This option may be specified multiple times to build a list of branches
+to fetch.
+Cannot be used together with the
+.Fl a
+option.
+.It Fl d
+Delete branches and tags from the local repository which are no longer
+present in the remote repository.
+Only references are deleted.
+Any commit, tree, tag, and blob objects belonging to deleted branches or
+tags remain in the repository and may be removed separately with
+Git's garbage collector or
+.Cm gotadmin cleanup .
+.It Fl l
+List branches and tags available for fetching from the remote repository
+and exit immediately.
+Cannot be used together with any of the other options except
+.Fl v ,
+.Fl q ,
+and
+.Fl r .
+.It Fl q
+Suppress progress reporting output.
+The same option will be passed to
+.Xr ssh 1
+if applicable.
+.It Fl R Ar reference
+In addition to the branches and tags that will be fetched, fetch an arbitrary
+.Ar reference
+from the remote repository's
+.Dq refs/
+namespace.
+This option may be specified multiple times to build a list of additional
+references to fetch.
+The specified
+.Ar reference
+may either be a path to a specific reference, or a reference namespace
+which will cause all references in this namespace to be fetched.
+.Pp
+Each reference will be mapped into the local repository's
+.Dq refs/remotes/
+namespace, unless the local repository was created as a mirror with
+.Cm got clone -m
+in which case references will be mapped directly into the local repository's
+.Dq refs/
+namespace.
+.Pp
+Once a reference has been fetched, a branch based on it can be created with
+.Cm got branch
+if needed.
+.Pp
+.Cm got fetch
+will refuse to fetch references from the remote repository's
+.Dq refs/remotes/
+or
+.Dq refs/got/
+namespace.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl t
+Allow existing references in the
+.Dq refs/tags
+namespace to be updated if they have changed on the server.
+If not specified, only new tag references will be created.
+.It Fl v
+Verbose mode.
+Causes
+.Cm got fetch
+to print debugging messages to standard error output.
+The same option will be passed to
+.Xr ssh 1
+if applicable.
+Multiple -v options increase the verbosity.
+The maximum is 3.
+.It Fl X
+Delete all references which correspond to a particular
+.Ar remote-repository
+instead of fetching new changes.
+This can be useful when a remote repository is being removed from
+.Xr got.conf 5 .
+.Pp
+With
+.Fl X ,
+the
+.Ar remote-repository
+argument is mandatory and no other options except
+.Fl r ,
+.Fl v ,
+and
+.Fl q
+are allowed.
+.Pp
+Only references are deleted.
+Any commit, tree, tag, and blob objects fetched from a remote repository
+will generally be stored in pack files and may be removed separately with
+.Xr git-repack 1
+and Git's garbage collector.
+.El
+.Tg co
+.It Xo
+.Cm checkout
+.Op Fl Eq
+.Op Fl b Ar branch
+.Op Fl c Ar commit
+.Op Fl p Ar path-prefix
+.Ar repository-path
+.Op Ar work-tree-path
+.Xc
+.Dl Pq alias: Cm co
+Copy files from a repository into a new work tree.
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It A Ta new file was added
+.It E Ta file already exists in work tree's meta-data
+.El
+.Pp
+If the
+.Ar work tree path
+is not specified, either use the last component of
+.Ar repository path ,
+or if a
+.Ar path prefix
+was specified use the last component of
+.Ar path prefix .
+.Pp
+The options for
+.Cm got checkout
+are as follows:
+.Bl -tag -width Ds
+.It Fl b Ar branch
+Check out files from a commit on the specified
+.Ar branch .
+If this option is not specified, a branch resolved via the repository's HEAD
+reference will be used.
+.It Fl c Ar commit
+Check out files from the specified
+.Ar commit
+on the selected branch.
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+If this option is not specified, the most recent commit on the selected
+branch will be used.
+.Pp
+If the specified
+.Ar commit
+is not contained in the selected branch, a different branch which contains
+this commit must be specified with the
+.Fl b
+option.
+If no such branch is known, a new branch must be created for this
+commit with
+.Cm got branch
+before
+.Cm got checkout
+can be used.
+Checking out work trees with an unknown branch is intentionally not supported.
+.It Fl E
+Proceed with the checkout operation even if the directory at
+.Ar work-tree-path
+is not empty.
+Existing files will be left intact.
+.It Fl p Ar path-prefix
+Restrict the work tree to a subset of the repository's tree hierarchy.
+Only files beneath the specified
+.Ar path-prefix
+will be checked out.
+.It Fl q
+Silence progress output.
+.El
+.Tg up
+.It Xo
+.Cm update
+.Op Fl q
+.Op Fl b Ar branch
+.Op Fl c Ar commit
+.Op Ar path ...
+.Xc
+.Dl Pq alias: Cm up
+Update an existing work tree to a different
+.Ar commit .
+Change existing files in the work tree as necessary to match file contents
+of this commit.
+Preserve any local changes in the work tree and merge them with the
+incoming changes.
+.Pp
+Files which already contain merge conflicts will not be updated to avoid
+further complications.
+Such files will be updated when
+.Cm got update
+is run again after merge conflicts have been resolved.
+If the conflicting changes are no longer needed, affected files can be
+reverted with
+.Cm got revert
+before running
+.Cm got update
+again.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It U Ta file was updated and contained no local changes
+.It G Ta file was updated and local changes were merged cleanly
+.It C Ta file was updated and conflicts occurred during merge
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta versioned file is obstructed by a non-regular file
+.It ! Ta a missing versioned file was restored
+.It # Ta file was not updated because it contains merge conflicts
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+If no
+.Ar path
+is specified, update the entire work tree.
+Otherwise, restrict the update operation to files at or within the
+specified paths.
+Each path is required to exist in the update operation's target commit.
+Files in the work tree outside specified paths will remain unchanged and
+will retain their previously recorded base commit.
+Some
+.Nm
+commands may refuse to run while the work tree contains files from
+multiple base commits.
+The base commit of such a work tree can be made consistent by running
+.Cm got update
+across the entire work tree.
+Specifying a
+.Ar path
+is incompatible with the
+.Fl b
+option.
+.Pp
+.Cm got update
+cannot update paths with staged changes.
+If changes have been staged with
+.Cm got stage ,
+these changes must first be committed with
+.Cm got commit
+or unstaged with
+.Cm got unstage .
+.Pp
+The options for
+.Cm got update
+are as follows:
+.Bl -tag -width Ds
+.It Fl b Ar branch
+Switch the work tree's branch reference to the specified
+.Ar branch
+before updating the work tree.
+This option requires that all paths in the work tree are updated.
+.Pp
+As usual, any local changes in the work tree will be preserved.
+This can be useful when switching to a newly created branch in order
+to commit existing local changes to this branch.
+.Pp
+Any local changes must be dealt with separately in order to obtain a
+work tree with pristine file contents corresponding exactly to the specified
+.Ar branch .
+Such changes could first be committed to a different branch with
+.Cm got commit ,
+or could be discarded with
+.Cm got revert .
+.It Fl c Ar commit
+Update the work tree to the specified
+.Ar commit .
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+If this option is not specified, the most recent commit on the work tree's
+branch will be used.
+.It Fl q
+Silence progress output.
+.El
+.Tg st
+.It Xo
+.Cm status
+.Op Fl I
+.Op Fl S Ar status-codes
+.Op Fl s Ar status-codes
+.Op Ar path ...
+.Xc
+.Dl Pq alias: Cm st
+Show the current modification status of files in a work tree,
+using the following status codes:
+.Bl -column YXZ description
+.It M Ta modified file
+.It A Ta file scheduled for addition in next commit
+.It D Ta file scheduled for deletion in next commit
+.It C Ta modified or added file which contains merge conflicts
+.It ! Ta versioned file was expected on disk but is missing
+.It \(a~ Ta versioned file is obstructed by a non-regular file
+.It ? Ta unversioned item not tracked by
+.Nm
+.It m Ta modified file modes (executable bit only)
+.It N Ta non-existent
+.Ar path
+specified on the command line
+.El
+.Pp
+If no
+.Ar path
+is specified, show modifications in the entire work tree.
+Otherwise, show modifications at or within the specified paths.
+.Pp
+If changes have been staged with
+.Cm got stage ,
+staged changes are shown in the second output column, using the following
+status codes:
+.Bl -column YXZ description
+.It M Ta file modification is staged
+.It A Ta file addition is staged
+.It D Ta file deletion is staged
+.El
+.Pp
+Changes created on top of staged changes are indicated in the first column:
+.Bl -column YXZ description
+.It MM Ta file was modified after earlier changes have been staged
+.It MA Ta file was modified after having been staged for addition
+.El
+.Pp
+The options for
+.Cm got status
+are as follows:
+.Bl -tag -width Ds
+.It Fl I
+Show unversioned files even if they match an ignore pattern.
+.It Fl S Ar status-codes
+Suppress the output of files with a modification status matching any of the
+single-character status codes contained in the
+.Ar status-codes
+argument.
+Any combination of codes from the above list of possible status codes
+may be specified.
+For staged files, status codes displayed in either column will be matched.
+Cannot be used together with the
+.Fl s
+option.
+.It Fl s Ar status-codes
+Only show files with a modification status matching any of the
+single-character status codes contained in the
+.Ar status-codes
+argument.
+Any combination of codes from the above list of possible status codes
+may be specified.
+For staged files, status codes displayed in either column will be matched.
+Cannot be used together with the
+.Fl S
+option.
+.El
+.Pp
+For compatibility with
+.Xr cvs 1
+and
+.Xr git 1 ,
+.Cm got status
+reads
+.Xr glob 7
+patterns from
+.Pa .cvsignore
+and
+.Pa .gitignore
+files in each traversed directory and will not display unversioned files
+which match these patterns.
+Ignore patterns which end with a slash,
+.Dq / ,
+will only match directories.
+As an extension to
+.Xr glob 7
+matching rules,
+.Cm got status
+supports consecutive asterisks,
+.Dq ** ,
+which will match an arbitrary amount of directories.
+Unlike
+.Xr cvs 1 ,
+.Cm got status
+only supports a single ignore pattern per line.
+Unlike
+.Xr git 1 ,
+.Cm got status
+does not support negated ignore patterns prefixed with
+.Dq \&! ,
+and gives no special significance to the location of path component separators,
+.Dq / ,
+in a pattern.
+.It Xo
+.Cm log
+.Op Fl bdPpRs
+.Op Fl C Ar number
+.Op Fl c Ar commit
+.Op Fl l Ar N
+.Op Fl r Ar repository-path
+.Op Fl S Ar search-pattern
+.Op Fl x Ar commit
+.Op Ar path
+.Xc
+Display history of a repository.
+If a
+.Ar path
+is specified, show only commits which modified this path.
+If invoked in a work tree, the
+.Ar path
+is interpreted relative to the current working directory,
+and the work tree's path prefix is implicitly prepended.
+Otherwise, the path is interpreted relative to the repository root.
+.Pp
+The options for
+.Cm got log
+are as follows:
+.Bl -tag -width Ds
+.It Fl b
+Display individual commits which were merged into the current branch
+from other branches.
+By default,
+.Cm got log
+shows the linear history of the current branch only.
+.It Fl C Ar number
+Set the number of context lines shown in diffs with
+.Fl p .
+By default, 3 lines of context are shown.
+.It Fl c Ar commit
+Start traversing history at the specified
+.Ar commit .
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+If this option is not specified, default to the work tree's current branch
+if invoked in a work tree, or to the repository's HEAD reference.
+.It Fl d
+Display diffstat of changes introduced in each commit.
+Cannot be used with the
+.Fl s
+option.
+.It Fl l Ar N
+Limit history traversal to a given number of commits.
+If this option is not specified, a default limit value of zero is used,
+which is treated as an unbounded limit.
+The
+.Ev GOT_LOG_DEFAULT_LIMIT
+environment variable may be set to change this default value.
+.It Fl P
+Display the list of file paths changed in each commit, using the following
+status codes:
+.Bl -column YXZ description
+.It M Ta modified file
+.It D Ta file was deleted
+.It A Ta new file was added
+.It m Ta modified file modes (executable bit only)
+.El
+.Pp
+Cannot be used with the
+.Fl s
+option.
+.It Fl p
+Display the patch of modifications made in each commit.
+If a
+.Ar path
+is specified, only show the patch of modifications at or within this path.
+Cannot be used with the
+.Fl s
+option.
+.It Fl R
+Determine a set of commits to display as usual, but display these commits
+in reverse order.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl S Ar search-pattern
+If specified, show only commits with a log message, author name,
+committer name, or ID SHA1 hash matched by the extended regular
+expression
+.Ar search-pattern .
+Lines in committed patches will be matched if
+.Fl p
+is specified.
+File paths changed by a commit will be matched if
+.Fl P
+is specified.
+Regular expression syntax is documented in
+.Xr re_format 7 .
+.It Fl s
+Display a short one-line summary of each commit, instead of the default
+history format.
+Cannot be used together with the
+.Fl p
+or
+.Fl P
+option.
+.It Fl x Ar commit
+Stop traversing commit history immediately after the specified
+.Ar commit
+has been traversed.
+This option has no effect if the specified
+.Ar commit
+is never traversed.
+.El
+.Tg di
+.It Xo
+.Cm diff
+.Op Fl adPsw
+.Op Fl C Ar number
+.Op Fl c Ar commit
+.Op Fl r Ar repository-path
+.Op Ar object1 Ar object2 | Ar path ...
+.Xc
+.Dl Pq alias: Cm di
+When invoked within a work tree without any arguments, display all
+local changes in the work tree.
+If one or more
+.Ar path
+arguments are specified, only show changes within the specified paths.
+.Pp
+If two arguments are provided, treat each argument as a reference, a tag
+name, or an object ID SHA1 hash, and display differences between the
+corresponding objects.
+Both objects must be of the same type (blobs, trees, or commits).
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+If none of these interpretations produce a valid result or if the
+.Fl P
+option is used,
+and if
+.Cm got diff
+is running in a work tree, attempt to interpret the two arguments as paths.
+.Pp
+The options for
+.Cm got diff
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Treat file contents as ASCII text even if binary data is detected.
+.It Fl C Ar number
+Set the number of context lines shown in the diff.
+By default, 3 lines of context are shown.
+.It Fl c Ar commit
+Show differences between commits in the repository.
+This option may be used up to two times.
+When used only once, show differences between the specified
+.Ar commit
+and its first parent commit.
+When used twice, show differences between the two specified commits.
+.Pp
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.Pp
+If the
+.Fl c
+option is used, all non-option arguments will be interpreted as paths.
+If one or more such
+.Ar path
+arguments are provided, only show differences for the specified paths.
+.Pp
+Cannot be used together with the
+.Fl P
+option.
+.It Fl d
+Display diffstat of changes before the actual diff by annotating each file path
+or blob hash being diffed with the total number of lines added and removed.
+A summary line will display the total number of changes across all files.
+.It Fl P
+Interpret all arguments as paths only.
+This option can be used to resolve ambiguity in cases where paths
+look like tag names, reference names, or object IDs.
+This option is only valid when
+.Cm got diff
+is invoked in a work tree.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl s
+Show changes staged with
+.Cm got stage
+instead of showing local changes in the work tree.
+This option is only valid when
+.Cm got diff
+is invoked in a work tree.
+.It Fl w
+Ignore whitespace-only changes.
+.El
+.Tg bl
+.It Xo
+.Cm blame
+.Op Fl c Ar commit
+.Op Fl r Ar repository-path
+.Ar path
+.Xc
+.Dl Pq alias: Cm bl
+Display line-by-line history of a file at the specified path.
+.Pp
+The options for
+.Cm got blame
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+Start traversing history at the specified
+.Ar commit .
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.El
+.Tg tr
+.It Xo
+.Cm tree
+.Op Fl iR
+.Op Fl c Ar commit
+.Op Fl r Ar repository-path
+.Op Ar path
+.Xc
+.Dl Pq alias: Cm tr
+Display a listing of files and directories at the specified
+directory path in the repository.
+Entries shown in this listing may carry one of the following trailing
+annotations:
+.Bl -column YXZ description
+.It @ Ta entry is a symbolic link
+.It / Ta entry is a directory
+.It * Ta entry is an executable file
+.It $ Ta entry is a Git submodule
+.El
+.Pp
+Symbolic link entries are also annotated with the target path of the link.
+.Pp
+If no
+.Ar path
+is specified, list the repository path corresponding to the current
+directory of the work tree, or the root directory of the repository
+if there is no work tree.
+.Pp
+The options for
+.Cm got tree
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+List files and directories as they appear in the specified
+.Ar commit .
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.It Fl i
+Show object IDs of files (blob objects) and directories (tree objects).
+.It Fl R
+Recurse into sub-directories in the repository.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.El
+.It Xo
+.Cm ref
+.Op Fl dlt
+.Op Fl c Ar object
+.Op Fl r Ar repository-path
+.Op Fl s Ar reference
+.Op Ar name
+.Xc
+Manage references in a repository.
+.Pp
+References may be listed, created, deleted, and changed.
+When creating, deleting, or changing a reference the specified
+.Ar name
+must be an absolute reference name, i.e. it must begin with
+.Dq refs/ .
+.Pp
+The options for
+.Cm got ref
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar object
+Create a reference or change an existing reference.
+The reference with the specified
+.Ar name
+will point at the specified
+.Ar object .
+The expected
+.Ar object
+argument is a ID SHA1 hash or an existing reference or tag name which will
+be resolved to the ID of a corresponding commit, tree, tag, or blob object.
+Cannot be used together with any other options except
+.Fl r .
+.It Fl d
+Delete the reference with the specified
+.Ar name
+from the repository.
+Any commit, tree, tag, and blob objects belonging to deleted references
+remain in the repository and may be removed separately with
+Git's garbage collector or
+.Cm gotadmin cleanup .
+Cannot be used together with any other options except
+.Fl r .
+.It Fl l
+List references in the repository.
+If no
+.Ar name
+is specified, list all existing references in the repository.
+If
+.Ar name
+is a reference namespace, list all references in this namespace.
+Otherwise, show only the reference with the given
+.Ar name .
+Cannot be used together with any other options except
+.Fl r
+and
+.Fl t .
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl s Ar reference
+Create a symbolic reference, or change an existing symbolic reference.
+The symbolic reference with the specified
+.Ar name
+will point at the specified
+.Ar reference
+which must already exist in the repository.
+Care should be taken not to create loops between references when
+this option is used.
+Cannot be used together with any other options except
+.Fl r .
+.It Fl t
+Sort listed references by modification time (most recently modified first)
+instead of sorting by lexicographical order.
+Use of this option requires the
+.Fl l
+option to be used as well.
+.El
+.Tg br
+.It Xo
+.Cm branch
+.Op Fl lnt
+.Op Fl c Ar commit
+.Op Fl d Ar name
+.Op Fl r Ar repository-path
+.Op Ar name
+.Xc
+.Dl Pq alias: Cm br
+Create, list, or delete branches.
+.Pp
+Local branches are managed via references which live in the
+.Dq refs/heads/
+reference namespace.
+The
+.Cm got branch
+command creates references in this namespace only.
+.Pp
+When deleting branches, the specified
+.Ar name
+is searched in the
+.Dq refs/heads
+reference namespace first.
+If no corresponding branch is found, the
+.Dq refs/remotes
+namespace will be searched next.
+.Pp
+If invoked in a work tree without any arguments, print the name of the
+work tree's current branch.
+.Pp
+If a
+.Ar name
+argument is passed, attempt to create a branch reference with the given name.
+By default the new branch reference will point at the latest commit on the
+work tree's current branch if invoked in a work tree, and otherwise to a commit
+resolved via the repository's HEAD reference.
+.Pp
+If invoked in a work tree, once the branch was created successfully
+switch the work tree's head reference to the newly created branch and
+update files across the entire work tree, just like
+.Cm got update -b Ar name
+would do.
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It U Ta file was updated and contained no local changes
+.It G Ta file was updated and local changes were merged cleanly
+.It C Ta file was updated and conflicts occurred during merge
+.It D Ta file was deleted
+.It A Ta new file was added
+.It \(a~ Ta versioned file is obstructed by a non-regular file
+.It ! Ta a missing versioned file was restored
+.El
+.Pp
+The options for
+.Cm got branch
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+Make a newly created branch reference point at the specified
+.Ar commit .
+The expected
+.Ar commit
+argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+.It Fl d Ar name
+Delete the branch with the specified
+.Ar name
+from the
+.Dq refs/heads
+or
+.Dq refs/remotes
+reference namespace.
+.Pp
+Only the branch reference is deleted.
+Any commit, tree, and blob objects belonging to the branch
+remain in the repository and may be removed separately with
+Git's garbage collector or
+.Cm gotadmin cleanup .
+.It Fl l
+List all existing branches in the repository, including copies of remote
+repositories' branches in the
+.Dq refs/remotes/
+reference namespace.
+.Pp
+If invoked in a work tree, the work tree's current branch is shown
+with one of the following annotations:
+.Bl -column YXZ description
+.It * Ta work tree's base commit matches the branch tip
+.It \(a~ Ta work tree's base commit is out-of-date
+.El
+.It Fl n
+Do not switch and update the work tree after creating a new branch.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl t
+Sort listed branches by modification time (most recently modified first)
+instead of sorting by lexicographical order.
+Branches in the
+.Dq refs/heads/
+reference namespace are listed before branches in
+.Dq refs/remotes/
+regardless.
+Use of this option requires the
+.Fl l
+option to be used as well.
+.El
+.It Xo
+.Cm tag
+.Op Fl lVv
+.Op Fl c Ar commit
+.Op Fl m Ar message
+.Op Fl r Ar repository-path
+.Op Fl s Ar signer-id
+.Ar name
+.Xc
+Manage tags in a repository.
+.Pp
+Tags are managed via references which live in the
+.Dq refs/tags/
+reference namespace.
+The
+.Cm got tag
+command operates on references in this namespace only.
+References in this namespace point at tag objects which contain a pointer
+to another object, a tag message, as well as author and timestamp information.
+.Pp
+Attempt to create a tag with the given
+.Ar name ,
+and make this tag point at the given
+.Ar commit .
+If no commit is specified, default to the latest commit on the work tree's
+current branch if invoked in a work tree, and to a commit resolved via
+the repository's HEAD reference otherwise.
+.Pp
+The options for
+.Cm got tag
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+Make the newly created tag reference point at the specified
+.Ar commit .
+The expected
+.Ar commit
+argument is a commit ID SHA1 hash or an existing reference or tag name which
+will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.It Fl l
+List all existing tags in the repository instead of creating a new tag.
+If a
+.Ar name
+argument is passed, show only the tag with the given
+.Ar name .
+.It Fl m Ar message
+Use the specified tag message when creating the new tag.
+Without the
+.Fl m
+option,
+.Cm got tag
+opens a temporary file in an editor where a tag message can be written.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl s Ar signer-id
+While creating a new tag, sign this tag with the identity given in
+.Ar signer-id .
+.Pp
+For SSH-based signatures,
+.Ar signer-id
+is the path to a file which may refer to either a private SSH key,
+or a public SSH key with the private half available via
+.Xr ssh-agent 1 .
+.Cm got tag
+will sign the tag object by invoking
+.Xr ssh-keygen 1
+with the
+.Fl Y Cm sign
+command, using the signature namespace
+.Dq git
+for compatibility with
+.Xr git 1 .
+.It Fl V
+Verify tag object signatures.
+If a
+.Ar name
+is specified, show and verify the tag object with the provided name.
+Otherwise, list all tag objects and verify signatures where present.
+.Pp
+.Cm got tag
+verifies SSH-based signatures by invoking
+.Xr ssh-keygen 1
+with the options
+.Fl Y Cm verify Fl f Ar allowed_signers .
+A path to the
+.Ar allowed_signers
+file must be set in
+.Xr got.conf 5 ,
+otherwise verification is impossible.
+.It Fl v
+Verbose mode.
+During SSH signature creation and verification this option will be passed to
+.Xr ssh-keygen 1 .
+Multiple -v options increase the verbosity.
+The maximum is 3.
+.El
+.Pp
+By design, the
+.Cm got tag
+command will not delete tags or change existing tags.
+If a tag must be deleted, the
+.Cm got ref
+command may be used to delete a tag's reference.
+This should only be done if the tag has not already been copied to
+another repository.
+.It Xo
+.Cm add
+.Op Fl IR
+.Ar path ...
+.Xc
+Schedule unversioned files in a work tree for addition to the
+repository in the next commit.
+By default, files which match a
+.Cm got status
+ignore pattern will not be added.
+.Pp
+If a
+.Ar path
+mentioned in the command line is not an unversioned file then
+.Cm got add
+may raise an error.
+To avoid unnecessary errors from paths picked up by file globbing patterns
+in the shell, paths in the argument list will be silently ignored if they
+are not reported by
+.Cm got status
+at all, or if they are reported with one of the following status codes
+and do not have changes staged via
+.Cm got stage :
+.Bl -column YXZ description
+.It M Ta modified file
+.It A Ta file scheduled for addition in next commit
+.It C Ta modified or added file which contains merge conflicts
+.It m Ta modified file modes (executable bit only)
+.El
+.Pp
+The options for
+.Cm got add
+are as follows:
+.Bl -tag -width Ds
+.It Fl I
+Add files even if they match a
+.Cm got status
+ignore pattern.
+.It Fl R
+Permit recursion into directories.
+If this option is not specified,
+.Cm got add
+will refuse to run if a specified
+.Ar path
+is a directory.
+.El
+.Tg rm
+.It Xo
+.Cm remove
+.Op Fl fkR
+.Op Fl s Ar status-codes
+.Ar path ...
+.Xc
+.Dl Pq alias: Cm rm
+Remove versioned files from a work tree and schedule them for deletion
+from the repository in the next commit.
+.Pp
+The options for
+.Cm got remove
+are as follows:
+.Bl -tag -width Ds
+.It Fl f
+Perform the operation even if a file contains local modifications,
+and do not raise an error if a specified
+.Ar path
+does not exist on disk.
+.It Fl k
+Keep affected files on disk.
+.It Fl R
+Permit recursion into directories.
+If this option is not specified,
+.Cm got remove
+will refuse to run if a specified
+.Ar path
+is a directory.
+.It Fl s Ar status-codes
+Only delete files with a modification status matching one of the
+single-character status codes contained in the
+.Ar status-codes
+argument.
+The following status codes may be specified:
+.Bl -column YXZ description
+.It M Ta modified file (this implies the
+.Fl f
+option)
+.It ! Ta versioned file expected on disk but missing
+.El
+.El
+.Tg pa
+.It Xo
+.Cm patch
+.Op Fl nR
+.Op Fl c Ar commit
+.Op Fl p Ar strip-count
+.Op Ar patchfile
+.Xc
+.Dl Pq alias: Cm pa
+Apply changes from
+.Ar patchfile
+to files in a work tree.
+Files added or removed by a patch will be scheduled for addition or removal in
+the work tree.
+.Pp
+The patch must be in the unified diff format as produced by
+.Cm got diff ,
+.Xr git-diff 1 ,
+or by
+.Xr diff 1
+and
+.Xr cvs 1
+diff when invoked with their
+.Fl u
+options.
+If no
+.Ar patchfile
+argument is provided, read unified diff data from standard input instead.
+.Pp
+If the
+.Ar patchfile
+contains multiple patches, then attempt to apply each of them in sequence.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column XYZ description
+.It M Ta file was modified
+.It G Ta file was merged using a merge-base found in the repository
+.It C Ta file was merged and conflicts occurred during merge
+.It D Ta file was deleted
+.It A Ta file was added
+.It # Ta failed to patch the file
+.El
+.Pp
+If a change does not match at its exact line number, attempt to
+apply it somewhere else in the file if a good spot can be found.
+Otherwise, the patch will fail to apply.
+.Pp
+.Nm
+.Cm patch
+will refuse to apply a patch if certain preconditions are not met.
+Files to be deleted must already be under version control, and must
+not have been scheduled for deletion already.
+Files to be added must not yet be under version control and must not
+already be present on disk.
+Files to be modified must already be under version control and may not
+contain conflict markers.
+.Pp
+If an error occurs, the
+.Cm patch
+operation will be aborted.
+Any changes made to the work tree up to this point will be left behind.
+Such changes can be viewed with
+.Cm got diff
+and can be reverted with
+.Cm got revert
+if needed.
+.Pp
+The options for
+.Cm got patch
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+Attempt to locate files within the specified
+.Ar commit
+for use as a merge-base for 3-way merges.
+Ideally, the specified
+.Ar commit
+should contain versions of files which the changes contained in the
+.Ar patchfile
+were based on.
+Files will be located by path, relative to the repository root.
+If the
+.Fl p
+option is used then leading path components will be stripped
+before paths are looked up in the repository.
+.Pp
+If the
+.Fl c
+option is not used then
+.Cm got patch
+will attempt to locate merge-bases via object IDs found in
+.Ar patchfile
+meta-data, such as produced by
+.Cm got diff
+or
+.Xr git-diff 1 .
+Use of the
+.Fl c
+option is only recommended in the absence of such meta-data.
+.Pp
+In case no merge-base is available for a file, changes will be applied
+without doing a 3-way merge.
+Changes which do not apply cleanly may then be rejected entirely, rather
+than producing merge conflicts in the patched target file.
+.It Fl n
+Do not make any modifications to the work tree.
+This can be used to check whether a patch would apply without issues.
+If the
+.Ar patchfile
+contains diffs that affect the same file multiple times, the results
+displayed may be incorrect.
+.It Fl p Ar strip-count
+Specify the number of leading path components to strip from paths
+parsed from
+.Ar patchfile .
+If the
+.Fl p
+option is not used,
+.Sq a/
+and
+.Sq b/
+path prefixes generated by
+.Xr git-diff 1
+will be recognized and stripped automatically.
+.It Fl R
+Reverse the patch before applying it.
+.El
+.Tg rv
+.It Xo
+.Cm revert
+.Op Fl pR
+.Op Fl F Ar response-script
+.Ar path ...
+.Xc
+.Dl Pq alias: Cm rv
+Revert any local changes in files at the specified paths in a work tree.
+File contents will be overwritten with those contained in the
+work tree's base commit.
+There is no way to bring discarded changes back after
+.Cm got revert !
+.Pp
+If a file was added with
+.Cm got add ,
+it will become an unversioned file again.
+If a file was deleted with
+.Cm got remove ,
+it will be restored.
+.Pp
+The options for
+.Cm got revert
+are as follows:
+.Bl -tag -width Ds
+.It Fl F Ar response-script
+With the
+.Fl p
+option, read
+.Dq y ,
+.Dq n ,
+and
+.Dq q
+responses line-by-line from the specified
+.Ar response-script
+file instead of prompting interactively.
+.It Fl p
+Instead of reverting all changes in files, interactively select or reject
+changes to revert based on
+.Dq y
+(revert change),
+.Dq n
+(keep change), and
+.Dq q
+(quit reverting this file) responses.
+If a file is in modified status, individual patches derived from the
+modified file content can be reverted.
+Files in added or deleted status may only be reverted in their entirety.
+.It Fl R
+Permit recursion into directories.
+If this option is not specified,
+.Cm got revert
+will refuse to run if a specified
+.Ar path
+is a directory.
+.El
+.Tg ci
+.It Xo
+.Cm commit
+.Op Fl CNnS
+.Op Fl A Ar author
+.Op Fl F Ar path
+.Op Fl m Ar message
+.Op Ar path ...
+.Xc
+.Dl Pq alias: Cm ci
+Create a new commit in the repository from changes in a work tree
+and use this commit as the new base commit for the work tree.
+If no
+.Ar path
+is specified, commit all changes in the work tree.
+Otherwise, commit changes at or within the specified paths.
+.Pp
+If changes have been explicitly staged for commit with
+.Cm got stage ,
+only commit staged changes and reject any specified paths which
+have not been staged.
+.Pp
+.Cm got commit
+opens a temporary file in an editor where a log message can be written
+unless the
+.Fl m
+option is used
+or the
+.Fl F
+and
+.Fl N
+options are used together.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It M Ta modified file
+.It D Ta file was deleted
+.It A Ta new file was added
+.It m Ta modified file modes (executable bit only)
+.El
+.Pp
+Files which are not part of the new commit will retain their previously
+recorded base commit.
+Some
+.Nm
+commands may refuse to run while the work tree contains files from
+multiple base commits.
+The base commit of such a work tree can be made consistent by running
+.Cm got update
+across the entire work tree.
+.Pp
+The
+.Cm got commit
+command requires the
+.Ev GOT_AUTHOR
+environment variable to be set,
+unless an author has been configured in
+.Xr got.conf 5
+or Git's
+.Dv user.name
+and
+.Dv user.email
+configuration settings can be
+obtained from the repository's
+.Pa .git/config
+file or from Git's global
+.Pa ~/.gitconfig
+configuration file.
+.Pp
+The options for
+.Cm got commit
+are as follows:
+.Bl -tag -width Ds
+.It Fl A Ar author
+Set author information in the newly created commit to
+.Ar author .
+This is useful when committing changes on behalf of someone else.
+The
+.Ar author
+argument must use the same format as the
+.Ev GOT_AUTHOR
+environment variable.
+.Pp
+In addition to storing author information, the newly created commit
+object will retain
+.Dq committer
+information which is obtained, as usual, from the
+.Ev GOT_AUTHOR
+environment variable, or
+.Xr got.conf 5 ,
+or Git configuration settings.
+.It Fl C
+Allow committing files in conflicted status.
+.Pp
+Committing files with conflict markers should generally be avoided.
+Cases where conflict markers must be stored in the repository for
+some legitimate reason should be very rare.
+There are usually ways to avoid storing conflict markers verbatim by
+applying appropriate programming tricks.
+.It Fl F Ar path
+Use the prepared log message stored in the file found at
+.Ar path
+when creating the new commit.
+.Cm got commit
+opens a temporary file in an editor where the prepared log message can be
+reviewed and edited further if needed.
+Cannot be used together with the
+.Fl m
+option.
+.It Fl m Ar message
+Use the specified log message when creating the new commit.
+Cannot be used together with the
+.Fl F
+option.
+.It Fl N
+This option prevents
+.Cm got commit
+from opening the commit message in an editor.
+It has no effect unless it is used together with the
+.Fl F
+option and is intended for non-interactive use such as scripting.
+.It Fl n
+This option prevents
+.Cm got commit
+from generating a diff of the to-be-committed changes in a temporary file
+which can be viewed while editing a commit message.
+.It Fl S
+Allow the addition of symbolic links which point outside of the path space
+that is under version control.
+By default,
+.Cm got commit
+will reject such symbolic links due to safety concerns.
+As a precaution,
+.Nm
+may decide to represent such a symbolic link as a regular file which contains
+the link's target path, rather than creating an actual symbolic link which
+points outside of the work tree.
+Use of this option is discouraged because external mechanisms such as
+.Dq make obj
+are better suited for managing symbolic links to paths not under
+version control.
+.El
+.Pp
+.Cm got commit
+will refuse to run if certain preconditions are not met.
+If the work tree's current branch is not in the
+.Dq refs/heads/
+reference namespace, new commits may not be created on this branch.
+Local changes may only be committed if they are based on file content
+found in the most recent commit on the work tree's branch.
+If a path is found to be out of date,
+.Cm got update
+must be used first in order to merge local changes with changes made
+in the repository.
+.Tg se
+.It Xo
+.Cm send
+.Op Fl afqTv
+.Op Fl b Ar branch
+.Op Fl d Ar branch
+.Op Fl r Ar repository-path
+.Op Fl t Ar tag
+.Op Ar remote-repository
+.Xc
+.Dl Pq alias: Cm se
+Send new changes to a remote repository.
+If no
+.Ar remote-repository
+is specified,
+.Dq origin
+will be used.
+The remote repository's URL is obtained from the corresponding entry in
+.Xr got.conf 5
+or Git's
+.Pa config
+file of the local repository, as created by
+.Cm got clone .
+.Pp
+All objects corresponding to new changes will be written to a temporary
+pack file which is then uploaded to the server.
+Upon success, references in the
+.Dq refs/remotes/
+reference namespace of the local repository will be updated to point at
+the commits which have been sent.
+.Pp
+By default, changes will only be sent if they are based on up-to-date
+copies of relevant branches in the remote repository.
+If any changes to be sent are based on out-of-date copies or would
+otherwise break linear history of existing branches, new changes must
+be fetched from the server with
+.Cm got fetch
+and local branches must be rebased with
+.Cm got rebase
+before
+.Cm got send
+can succeed.
+The
+.Fl f
+option can be used to make exceptions to these requirements.
+.Pp
+The options for
+.Cm got send
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Send all branches from the local repository's
+.Dq refs/heads/
+reference namespace.
+The
+.Fl a
+option is equivalent to listing all branches with multiple
+.Fl b
+options.
+Cannot be used together with the
+.Fl b
+option.
+.It Fl b Ar branch
+Send the specified
+.Ar branch
+from the local repository's
+.Dq refs/heads/
+reference namespace.
+This option may be specified multiple times to build a list of branches
+to send.
+If this option is not specified, default to the work tree's current branch
+if invoked in a work tree, or to the repository's HEAD reference.
+Cannot be used together with the
+.Fl a
+option.
+.It Fl d Ar branch
+Delete the specified
+.Ar branch
+from the remote repository's
+.Dq refs/heads/
+reference namespace.
+This option may be specified multiple times to build a list of branches
+to delete.
+.Pp
+Only references are deleted.
+Any commit, tree, tag, and blob objects belonging to deleted branches
+may become subject to deletion by Git's garbage collector running on
+the server.
+.Pp
+Requesting deletion of branches results in an error if the server
+does not support this feature or disallows the deletion of branches
+based on its configuration.
+.It Fl f
+Attempt to force the server to overwrite existing branches or tags
+in the remote repository, even when
+.Cm got fetch
+followed by
+.Cm got rebase
+or
+.Cm got merge
+would usually be required before changes can be sent.
+The server may reject forced requests regardless, depending on its
+configuration.
+.Pp
+Any commit, tree, tag, and blob objects belonging to overwritten branches
+or tags may become subject to deletion by Git's garbage collector running
+on the server.
+.Pp
+The
+.Dq refs/tags
+reference namespace is globally shared between all repositories.
+Use of the
+.Fl f
+option to overwrite tags is discouraged because it can lead to
+inconsistencies between the tags present in different repositories.
+In general, creating a new tag with a different name is recommended
+instead of overwriting an existing tag.
+.Pp
+Use of the
+.Fl f
+option is particularly discouraged if changes being sent are based
+on an out-of-date copy of a branch in the remote repository.
+Instead of using the
+.Fl f
+option, new changes should
+be fetched with
+.Cm got fetch
+and local branches should be rebased with
+.Cm got rebase
+or merged with
+.Cm got merge ,
+followed by another attempt to send the changes.
+.Pp
+The
+.Fl f
+option should only be needed in situations where the remote repository's
+copy of a branch or tag is known to be out-of-date and is considered
+disposable.
+The risks of creating inconsistencies between different repositories
+should also be taken into account.
+.It Fl q
+Suppress progress reporting output.
+The same option will be passed to
+.Xr ssh 1
+if applicable.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.It Fl T
+Attempt to send all tags from the local repository's
+.Dq refs/tags/
+reference namespace.
+The
+.Fl T
+option is equivalent to listing all tags with multiple
+.Fl t
+options.
+Cannot be used together with the
+.Fl t
+option.
+.It Fl t Ar tag
+Send the specified
+.Ar tag
+from the local repository's
+.Dq refs/tags/
+reference namespace, in addition to any branches that are being sent.
+The
+.Fl t
+option may be specified multiple times to build a list of tags to send.
+No tags will be sent if the
+.Fl t
+option is not used.
+.Pp
+Raise an error if the specified
+.Ar tag
+already exists in the remote repository, unless the
+.Fl f
+option is used to overwrite the server's copy of the tag.
+In general, creating a new tag with a different name is recommended
+instead of overwriting an existing tag.
+.Pp
+Cannot be used together with the
+.Fl T
+option.
+.It Fl v
+Verbose mode.
+Causes
+.Cm got send
+to print debugging messages to standard error output.
+The same option will be passed to
+.Xr ssh 1
+if applicable.
+Multiple -v options increase the verbosity.
+The maximum is 3.
+.El
+.Tg cy
+.It Xo
+.Cm cherrypick
+.Op Fl lX
+.Op Ar commit
+.Xc
+.Dl Pq alias: Cm cy
+Merge changes from a single
+.Ar commit
+into the work tree.
+The specified
+.Ar commit
+should be on a different branch than the work tree's base commit.
+The expected argument is a reference or a commit ID SHA1 hash.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was merged
+.It C Ta file was merged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+The merged changes will appear as local changes in the work tree, which
+may be viewed with
+.Cm got diff ,
+amended manually or with further
+.Cm got cherrypick
+commands,
+committed with
+.Cm got commit .
+.Pp
+If invoked in a work tree where no
+.Cm rebase ,
+.Cm histedit ,
+or
+.Cm merge
+operation is taking place,
+.Cm got cherrypick
+creates a record of commits which have been merged into the work tree.
+When a file changed by
+.Cm got cherrypick
+is committed with
+.Cm got commit ,
+the log messages of relevant merged commits will then appear in the editor,
+where the messages should be further adjusted to convey the reasons for
+cherrypicking the changes.
+Upon exiting the editor, if the time stamp of the log message file
+is unchanged or the log message is empty,
+.Cm got commit
+will fail with an unmodified or empty log message error.
+.Pp
+If all the changes in all files touched by a given commit are discarded,
+e.g. with
+.Cm got revert ,
+this commit's log message record will also disappear.
+.Pp
+.Cm got cherrypick
+will refuse to run if certain preconditions are not met.
+If the work tree contains multiple base commits, it must first be updated
+to a single base commit with
+.Cm got update .
+If any relevant files already contain merge conflicts, these
+conflicts must be resolved first.
+.Pp
+The options for
+.Nm
+.Cm cherrypick
+are as follows:
+.Bl -tag -width Ds
+.It Fl l
+Display a list of commit log messages recorded by cherrypick operations,
+represented by references in the
+.Dq refs/got/worktree
+reference namespace.
+If a
+.Ar commit
+is specified, only show the log message of the specified commit.
+.Pp
+If invoked in a work tree, only log messages recorded by cherrypick operations
+in the current work tree will be displayed.
+Otherwise, all commit log messages will be displayed irrespective of the
+work tree in which they were created.
+This option cannot be used with
+.Fl X .
+.It Fl X
+Delete log messages created by previous cherrypick operations, represented by
+references in the
+.Dq refs/got/worktree
+reference namespace.
+If a
+.Ar commit
+is specified, only delete the log message of the specified commit.
+.Pp
+If invoked in a work tree, only log messages recorded by cherrypick operations
+in the current work tree will be deleted.
+Otherwise, all commit log messages will be deleted irrespective of the
+work tree in which they were created.
+This option cannot be used with
+.Fl l .
+.El
+.Pp
+.Tg bo
+.It Xo
+.Cm backout
+.Op Fl lX
+.Op Ar commit
+.Xc
+.Dl Pq alias: Cm bo
+Reverse-merge changes from a single
+.Ar commit
+into the work tree.
+The specified
+.Ar commit
+should be on the same branch as the work tree's base commit.
+The expected argument is a reference or a commit ID SHA1 hash.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was merged
+.It C Ta file was merged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+The reverse-merged changes will appear as local changes in the work tree,
+which may be viewed with
+.Cm got diff ,
+amended manually or with further
+.Cm got backout
+commands,
+committed with
+.Cm got commit .
+.Pp
+If invoked in a work tree where no
+.Cm rebase ,
+.Cm histedit ,
+or
+.Cm merge
+operation is taking place,
+.Cm got backout
+creates a record of commits which have been reverse-merged into the work tree.
+When a file changed by
+.Cm got backout
+is committed with
+.Cm got commit ,
+the log messages of relevant reverse-merged commits will then appear in
+the editor, where the messages should be further adjusted to convey the
+reasons for backing out the changes.
+Upon exiting the editor, if the time stamp of the log message file
+is unchanged or the log message is empty,
+.Cm got commit
+will fail with an unmodified or empty log message error.
+.Pp
+If all the changes in all files touched by a given commit are discarded,
+e.g. with
+.Cm got revert ,
+this commit's log message record will also disappear.
+.Pp
+.Cm got backout
+will refuse to run if certain preconditions are not met.
+If the work tree contains multiple base commits, it must first be updated
+to a single base commit with
+.Cm got update .
+If any relevant files already contain merge conflicts, these
+conflicts must be resolved first.
+.Pp
+The options for
+.Nm
+.Cm backout
+are as follows:
+.Bl -tag -width Ds
+.It Fl l
+Display a list of commit log messages recorded by backout operations,
+represented by references in the
+.Dq refs/got/worktree
+reference namespace.
+If a
+.Ar commit
+is specified, only show the log message of the specified commit.
+.Pp
+If invoked in a work tree, only log messages recorded by backout operations
+in the current work tree will be displayed.
+Otherwise, all commit log messages will be displayed irrespective of the
+work tree in which they were created.
+This option cannot be used with
+.Fl X .
+.It Fl X
+Delete log messages created by previous backout operations, represented by
+references in the
+.Dq refs/got/worktree
+reference namespace.
+If a
+.Ar commit
+is specified, only delete the log message of the specified commit.
+.Pp
+If invoked in a work tree, only log messages recorded by backout operations
+in the current work tree will be deleted.
+Otherwise, all commit log messages will be deleted irrespective of the
+work tree in which they were created.
+This option cannot be used with
+.Fl l .
+.El
+.Pp
+.Tg rb
+.It Xo
+.Cm rebase
+.Op Fl aCclX
+.Op Ar branch
+.Xc
+.Dl Pq alias: Cm rb
+Rebase commits on the specified
+.Ar branch
+onto the tip of the current branch of the work tree.
+The
+.Ar branch
+must share common ancestry with the work tree's current branch.
+Rebasing begins with the first descendant commit of the youngest
+common ancestor commit shared by the specified
+.Ar branch
+and the work tree's current branch, and stops once the tip commit
+of the specified
+.Ar branch
+has been rebased.
+.Pp
+When
+.Cm got rebase
+is used as intended, the specified
+.Ar branch
+represents a local commit history and may already contain changes
+that are not yet visible in any other repositories.
+The work tree's current branch, which must be set with
+.Cm got update -b
+before starting the
+.Cm rebase
+operation, represents a branch from a remote repository which shares
+a common history with the specified
+.Ar branch
+but has progressed, and perhaps diverged, due to commits added to the
+remote repository.
+.Pp
+Rebased commits are accumulated on a temporary branch which the work tree
+will remain switched to throughout the entire rebase operation.
+Commits on this branch represent the same changes with the same log
+messages as their counterparts on the original
+.Ar branch ,
+but with different commit IDs.
+Once rebasing has completed successfully, the temporary branch becomes
+the new version of the specified
+.Ar branch
+and the work tree is automatically switched to it.
+If author information is available via the
+.Ev GOT_AUTHOR
+environment variable,
+.Xr got.conf 5
+or Git's
+.Dv user.name
+and
+.Dv user.email
+configuration settings, this author information will be used to identify
+the
+.Dq committer
+of rebased commits.
+.Pp
+Old commits in their pre-rebase state are automatically backed up in the
+.Dq refs/got/backup/rebase
+reference namespace.
+As long as these references are not removed older versions of rebased
+commits will remain in the repository and can be viewed with the
+.Cm got rebase -l
+command.
+Removal of these references makes objects which become unreachable via
+any reference subject to removal by Git's garbage collector or
+.Cm gotadmin cleanup .
+.Pp
+While rebasing commits, show the status of each affected file,
+using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was merged
+.It C Ta file was merged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+If merge conflicts occur, the rebase operation is interrupted and may
+be continued once conflicts have been resolved.
+If any files with destined changes are found to be missing or unversioned,
+or if files could not be deleted due to differences in deleted content,
+the rebase operation will be interrupted to prevent potentially incomplete
+changes from being committed to the repository without user intervention.
+The work tree may be modified as desired and the rebase operation can be
+continued once the changes present in the work tree are considered complete.
+Alternatively, the rebase operation may be aborted which will leave
+.Ar branch
+unmodified and the work tree switched back to its original branch.
+.Pp
+If a merge conflict is resolved in a way which renders the merged
+change into a no-op change, the corresponding commit will be elided
+when the rebase operation continues.
+.Pp
+.Cm got rebase
+will refuse to run if certain preconditions are not met.
+If the
+.Ar branch
+is not in the
+.Dq refs/heads/
+reference namespace, the branch may not be rebased.
+If the work tree is not yet fully updated to the tip commit of its
+branch, then the work tree must first be updated with
+.Cm got update .
+If changes have been staged with
+.Cm got stage ,
+these changes must first be committed with
+.Cm got commit
+or unstaged with
+.Cm got unstage .
+If the work tree contains local changes, these changes must first be
+committed with
+.Cm got commit
+or reverted with
+.Cm got revert .
+If the
+.Ar branch
+contains changes to files outside of the work tree's path prefix,
+the work tree cannot be used to rebase this branch.
+.Pp
+The
+.Cm got update ,
+.Cm got integrate ,
+.Cm got merge ,
+.Cm got commit ,
+and
+.Cm got histedit
+commands will refuse to run while a rebase operation is in progress.
+Other commands which manipulate the work tree may be used for
+conflict resolution purposes.
+.Pp
+If the specified
+.Ar branch
+is already based on the work tree's current branch, then no commits
+need to be rebased and
+.Cm got rebase
+will simply switch the work tree to the specified
+.Ar branch
+and update files in the work tree accordingly.
+.Pp
+The options for
+.Cm got rebase
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Abort an interrupted rebase operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl C
+Allow a rebase operation to continue with files in conflicted status.
+This option should generally be avoided, and can only be used with the
+.Fl c
+option.
+.It Fl c
+Continue an interrupted rebase operation.
+If this option is used, no other command-line arguments are allowed except
+.Fl C .
+.It Fl l
+Show a list of past rebase operations, represented by references in the
+.Dq refs/got/backup/rebase
+reference namespace.
+.Pp
+Display the author, date, and log message of each backed up commit,
+the object ID of the corresponding post-rebase commit, and
+the object ID of their common ancestor commit.
+Given these object IDs,
+the
+.Cm got log
+command with the
+.Fl c
+and
+.Fl x
+options can be used to examine the history of either version of the branch,
+and the
+.Cm got branch
+command with the
+.Fl c
+option can be used to create a new branch from a pre-rebase state if desired.
+.Pp
+If a
+.Ar branch
+is specified, only show commits which at some point in time represented this
+branch.
+Otherwise, list all backed up commits for any branches.
+.Pp
+If this option is used,
+.Cm got rebase
+does not require a work tree.
+None of the other options can be used together with
+.Fl l .
+.It Fl X
+Delete backups created by past rebase operations, represented by references
+in the
+.Dq refs/got/backup/rebase
+reference namespace.
+.Pp
+If a
+.Ar branch
+is specified, only delete backups which at some point in time represented
+this branch.
+Otherwise, delete all references found within
+.Dq refs/got/backup/rebase .
+.Pp
+Any commit, tree, tag, and blob objects belonging to deleted backups
+remain in the repository and may be removed separately with
+Git's garbage collector or
+.Cm gotadmin cleanup .
+.Pp
+If this option is used,
+.Cm got rebase
+does not require a work tree.
+None of the other options can be used together with
+.Fl X .
+.El
+.Tg he
+.It Xo
+.Cm histedit
+.Op Fl aCcdeflmX
+.Op Fl F Ar histedit-script
+.Op Ar branch
+.Xc
+.Dl Pq alias: Cm he
+Edit commit history between the work tree's current base commit and
+the tip commit of the work tree's current branch.
+.Pp
+The
+.Cm got histedit
+command requires the
+.Ev GOT_AUTHOR
+environment variable to be set,
+unless an author has been configured in
+.Xr got.conf 5
+or Git's
+.Dv user.name
+and
+.Dv user.email
+configuration settings can be obtained from the repository's
+.Pa .git/config
+file or from Git's global
+.Pa ~/.gitconfig
+configuration file.
+.Pp
+Before starting a
+.Cm histedit
+operation, the work tree's current branch must be set with
+.Cm got update -b
+to the branch which should be edited, unless this branch is already the
+current branch of the work tree.
+The tip of this branch represents the upper bound (inclusive) of commits
+touched by the
+.Cm histedit
+operation.
+.Pp
+Furthermore, the work tree's base commit
+must be set with
+.Cm got update -c
+to a point in this branch's commit history where editing should begin.
+This commit represents the lower bound (non-inclusive) of commits touched
+by the
+.Cm histedit
+operation.
+.Pp
+Editing of commit history is controlled via a
+.Ar histedit script
+which can be written in an editor based on a template, passed on the
+command line, or generated with the
+.Fl d ,
+.Fl e ,
+.Fl f ,
+or
+.Fl m
+options.
+.Pp
+The format of the histedit script is line-based.
+Each line in the script begins with a command name, followed by
+whitespace and an argument.
+For most commands, the expected argument is a commit ID SHA1 hash.
+Any remaining text on the line is ignored.
+Lines which begin with the
+.Sq #
+character are ignored entirely.
+.Pp
+The available histedit script commands are as follows:
+.Bl -column YXZ pick-commit
+.It Cm pick Ar commit Ta Use the specified commit as it is.
+.It Cm edit Ar commit Ta Apply the changes from the specified commit, but
+then interrupt the histedit operation for amending, without creating a commit.
+While the histedit operation is interrupted arbitrary files may be edited,
+and commands which manipulate the work tree can be used freely.
+The
+.Cm got add
+and
+.Cm got remove
+commands can be used to add new files or remove existing ones.
+The
+.Cm got revert -p
+command can be used to eliminate arbitrary changes from files in the work tree.
+The
+.Cm got stage -p
+command may be used to prepare a subset of changes for inclusion in the
+next commit.
+Finally, the
+.Cm got commit
+command can be used to insert arbitrary commits into the edited history.
+Regular editing of history must eventually be resumed by running
+.Cm got histedit -c .
+.It Cm fold Ar commit Ta Combine the specified commit with the next commit
+listed further below that will be used.
+.It Cm drop Ar commit Ta Remove this commit from the edited history.
+.It Cm mesg Oo Ar log-message Oc Ta Create a new log message for the commit of
+a preceding
+.Cm pick
+or
+.Cm edit
+command on the previous line of the histedit script.
+The optional
+.Ar log-message
+argument provides a new single-line log message to use.
+If the
+.Ar log-message
+argument is omitted, open an editor where a new log message can be written.
+.El
+.Pp
+Every commit in the history being edited must be mentioned in the script.
+Lines may be re-ordered to change the order of commits in the edited history.
+No commit may be listed more than once.
+.Pp
+Edited commits are accumulated on a temporary branch which the work tree
+will remain switched to throughout the entire histedit operation.
+Once history editing has completed successfully, the temporary branch becomes
+the new version of the work tree's branch and the work tree is automatically
+switched to it.
+.Pp
+Old commits in their pre-histedit state are automatically backed up in the
+.Dq refs/got/backup/histedit
+reference namespace.
+As long as these references are not removed older versions of edited
+commits will remain in the repository and can be viewed with the
+.Cm got histedit -l
+command.
+Removal of these references makes objects which become unreachable via
+any reference subject to removal by Git's garbage collector or
+.Cm gotadmin cleanup .
+.Pp
+While merging commits, show the status of each affected file,
+using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was merged
+.It C Ta file was merged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+If merge conflicts occur, the histedit operation is interrupted and may
+be continued once conflicts have been resolved.
+If any files with destined changes are found to be missing or unversioned,
+or if files could not be deleted due to differences in deleted content,
+the histedit operation will be interrupted to prevent potentially incomplete
+changes from being committed to the repository without user intervention.
+The work tree may be modified as desired and the histedit operation can be
+continued once the changes present in the work tree are considered complete.
+Alternatively, the histedit operation may be aborted which will leave
+the work tree switched back to its original branch.
+.Pp
+If a merge conflict is resolved in a way which renders the merged
+change into a no-op change, the corresponding commit will be elided
+when the histedit operation continues.
+.Pp
+.Cm got histedit
+will refuse to run if certain preconditions are not met.
+If the work tree's current branch is not in the
+.Dq refs/heads/
+reference namespace, the history of the branch may not be edited.
+If the work tree contains multiple base commits, it must first be updated
+to a single base commit with
+.Cm got update .
+If changes have been staged with
+.Cm got stage ,
+these changes must first be committed with
+.Cm got commit
+or unstaged with
+.Cm got unstage .
+If the work tree contains local changes, these changes must first be
+committed with
+.Cm got commit
+or reverted with
+.Cm got revert .
+If the edited history contains changes to files outside of the work tree's
+path prefix, the work tree cannot be used to edit the history of this branch.
+.Pp
+The
+.Cm got update ,
+.Cm got rebase ,
+.Cm got merge ,
+and
+.Cm got integrate
+commands will refuse to run while a histedit operation is in progress.
+Other commands which manipulate the work tree may be used, and the
+.Cm got commit
+command may be used to commit arbitrary changes to the temporary branch
+while the histedit operation is interrupted.
+.Pp
+The options for
+.Cm got histedit
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Abort an interrupted histedit operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl C
+Allow a histedit operation to continue with files in conflicted status.
+This option should generally be avoided, and can only be used with the
+.Fl c
+option.
+.It Fl c
+Continue an interrupted histedit operation.
+If this option is used, no other command-line arguments are allowed except
+.Fl C .
+.It Fl d
+Drop all commits.
+This option is a quick equivalent to a histedit script which drops all
+commits.
+The
+.Fl d
+option can only be used when starting a new histedit operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl e
+Interrupt the histedit operation for editing after merging each commit.
+This option is a quick equivalent to a histedit script which uses the
+.Cm edit
+command for all commits.
+The
+.Fl e
+option can only be used when starting a new histedit operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl F Ar histedit-script
+Use the specified
+.Ar histedit-script
+instead of opening a temporary file in an editor where a histedit script
+can be written.
+.It Fl f
+Fold all commits into a single commit.
+This option is a quick equivalent to a histedit script which folds all
+commits, combining them all into one commit.
+The
+.Fl f
+option can only be used when starting a new histedit operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl l
+Show a list of past histedit operations, represented by references in the
+.Dq refs/got/backup/histedit
+reference namespace.
+.Pp
+Display the author, date, and log message of each backed up commit,
+the object ID of the corresponding post-histedit commit, and
+the object ID of their common ancestor commit.
+Given these object IDs,
+the
+.Cm got log
+command with the
+.Fl c
+and
+.Fl x
+options can be used to examine the history of either version of the branch,
+and the
+.Cm got branch
+command with the
+.Fl c
+option can be used to create a new branch from a pre-histedit state if desired.
+.Pp
+If a
+.Ar branch
+is specified, only show commits which at some point in time represented this
+branch.
+Otherwise, list all backed up commits for any branches.
+.Pp
+If this option is used,
+.Cm got histedit
+does not require a work tree.
+None of the other options can be used together with
+.Fl l .
+.It Fl m
+Edit log messages only.
+This option is a quick equivalent to a histedit script which edits
+only log messages but otherwise leaves every picked commit as-is.
+The
+.Fl m
+option can only be used when starting a new histedit operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl X
+Delete backups created by past histedit operations, represented by references
+in the
+.Dq refs/got/backup/histedit
+reference namespace.
+.Pp
+If a
+.Ar branch
+is specified, only delete backups which at some point in time represented
+this branch.
+Otherwise, delete all references found within
+.Dq refs/got/backup/histedit .
+.Pp
+Any commit, tree, tag, and blob objects belonging to deleted backups
+remain in the repository and may be removed separately with
+Git's garbage collector or
+.Cm gotadmin cleanup .
+.Pp
+If this option is used,
+.Cm got histedit
+does not require a work tree.
+None of the other options can be used together with
+.Fl X .
+.El
+.Tg ig
+.It Cm integrate Ar branch
+.Dl Pq alias: Cm ig
+Integrate the specified
+.Ar branch
+into the work tree's current branch.
+Files in the work tree are updated to match the contents on the integrated
+.Ar branch ,
+and the reference of the work tree's branch is changed to point at the
+head commit of the integrated
+.Ar branch .
+.Pp
+Both branches can be considered equivalent after integration since they
+will be pointing at the same commit.
+Both branches remain available for future work, if desired.
+In case the integrated
+.Ar branch
+is no longer needed it may be deleted with
+.Cm got branch -d .
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It U Ta file was updated
+.It D Ta file was deleted
+.It A Ta new file was added
+.It \(a~ Ta versioned file is obstructed by a non-regular file
+.It ! Ta a missing versioned file was restored
+.El
+.Pp
+.Cm got integrate
+will refuse to run if certain preconditions are not met.
+Most importantly, the
+.Ar branch
+must have been rebased onto the work tree's current branch with
+.Cm got rebase
+before it can be integrated, in order to linearize commit history and
+resolve merge conflicts.
+If the work tree contains multiple base commits, it must first be updated
+to a single base commit with
+.Cm got update .
+If changes have been staged with
+.Cm got stage ,
+these changes must first be committed with
+.Cm got commit
+or unstaged with
+.Cm got unstage .
+If the work tree contains local changes, these changes must first be
+committed with
+.Cm got commit
+or reverted with
+.Cm got revert .
+.Tg mg
+.It Xo
+.Cm merge
+.Op Fl aCcMn
+.Op Ar branch
+.Xc
+.Dl Pq alias: Cm mg
+Merge the specified
+.Ar branch
+into the current branch of the work tree.
+If the branches have diverged, creates a merge commit.
+Otherwise, if
+.Ar branch
+already includes all commits from the work tree's branch, updates the work
+tree's branch to be the same as
+.Ar branch
+without creating a commit, and updates the work tree to the most recent commit
+on the branch.
+.Pp
+If a linear project history is desired, then use of
+.Cm got rebase
+should be preferred over
+.Cm got merge .
+However, even strictly linear projects may require merge commits in order
+to merge in new versions of third-party code stored on vendor branches
+created with
+.Cm got import .
+.Pp
+Merge commits are commits based on multiple parent commits.
+The tip commit of the work tree's current branch, which must be in the
+.Dq refs/heads/
+reference namespace and must be set with
+.Cm got update -b
+before starting the
+.Cm merge
+operation, will be used as the first parent.
+The tip commit of the specified
+.Ar branch
+will be used as the second parent.
+.Pp
+No ancestral relationship between the two branches is required.
+If the two branches have already been merged previously, only new changes
+will be merged.
+.Pp
+It is not possible to create merge commits with more than two parents.
+If more than one branch needs to be merged, then multiple merge commits
+with two parents each can be created in sequence.
+.Pp
+While merging changes found on the
+.Ar branch
+into the work tree, show the status of each affected file,
+using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was merged
+.It C Ta file was merged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was deleted
+.It d Ta file's deletion was prevented by local modifications
+.It A Ta new file was added
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.It ? Ta changes destined for an unversioned file were not merged
+.El
+.Pp
+If merge conflicts occur, the merge operation is interrupted and conflicts
+must be resolved before the merge operation can continue.
+If any files with destined changes are found to be missing or unversioned,
+or if files could not be deleted due to differences in deleted content,
+the merge operation will be interrupted to prevent potentially incomplete
+changes from being committed to the repository without user intervention.
+The work tree may be modified as desired and the merge can be continued
+once the changes present in the work tree are considered complete.
+Alternatively, the merge operation may be aborted which will leave
+the work tree's current branch unmodified.
+.Pp
+.Cm got merge
+will refuse to run if certain preconditions are not met.
+If the work tree's current branch is not in the
+.Dq refs/heads/
+reference namespace then the work tree must first be switched to a
+branch in the
+.Dq refs/heads/
+namespace with
+.Cm got update -b .
+If the work tree is not yet fully updated to the tip commit of its
+branch, then the work tree must first be updated with
+.Cm got update .
+If the work tree contains multiple base commits, it must first be updated
+to a single base commit with
+.Cm got update .
+If changes have been staged with
+.Cm got stage ,
+these changes must first be committed with
+.Cm got commit
+or unstaged with
+.Cm got unstage .
+If the work tree contains local changes, these changes must first be
+committed with
+.Cm got commit
+or reverted with
+.Cm got revert .
+If the
+.Ar branch
+contains changes to files outside of the work tree's path prefix,
+the work tree cannot be used to merge this branch.
+.Pp
+The
+.Cm got update ,
+.Cm got commit ,
+.Cm got rebase ,
+.Cm got histedit ,
+.Cm got integrate ,
+and
+.Cm got stage
+commands will refuse to run while a merge operation is in progress.
+Other commands which manipulate the work tree may be used for
+conflict resolution purposes.
+.Pp
+The options for
+.Cm got merge
+are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Abort an interrupted merge operation.
+If this option is used, no other command-line arguments are allowed.
+.It Fl C
+Allow a merge operation to continue with files in conflicted status.
+This option should generally be avoided, and can only be used with the
+.Fl c
+option.
+.It Fl c
+Continue an interrupted merge operation.
+If this option is used, no other command-line arguments are allowed except
+.Fl C .
+.It Fl M
+Create a merge commit even if the branches have not diverged.
+.It Fl n
+Merge changes into the work tree as usual but do not create a merge
+commit immediately.
+The merge result can be adjusted as desired before a merge commit is
+created with
+.Cm got merge -c .
+Alternatively, the merge may be aborted with
+.Cm got merge -a .
+.El
+.Tg sg
+.It Xo
+.Cm stage
+.Op Fl lpS
+.Op Fl F Ar response-script
+.Op Ar path ...
+.Xc
+.Dl Pq alias: Cm sg
+Stage local changes for inclusion in the next commit.
+If no
+.Ar path
+is specified, stage all changes in the work tree.
+Otherwise, stage changes at or within the specified paths.
+Paths may be staged if they are added, modified, or deleted according to
+.Cm got status .
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It A Ta file addition has been staged
+.It M Ta file modification has been staged
+.It D Ta file deletion has been staged
+.El
+.Pp
+Staged file contents are saved in newly created blob objects in the repository.
+These blobs will be referred to by tree objects once staged changes have been
+committed.
+.Pp
+Staged changes affect the behaviour of
+.Cm got commit ,
+.Cm got status ,
+and
+.Cm got diff .
+While paths with staged changes exist, the
+.Cm got commit
+command will refuse to commit any paths which do not have staged changes.
+Local changes created on top of staged changes can only be committed if
+the path is staged again, or if the staged changes are committed first.
+The
+.Cm got status
+command will show both local changes and staged changes.
+The
+.Cm got diff
+command is able to display local changes relative to staged changes,
+and to display staged changes relative to the repository.
+The
+.Cm got revert
+command cannot revert staged changes but may be used to revert
+local changes created on top of staged changes.
+.Pp
+The options for
+.Cm got stage
+are as follows:
+.Bl -tag -width Ds
+.It Fl F Ar response-script
+With the
+.Fl p
+option, read
+.Dq y ,
+.Dq n ,
+and
+.Dq q
+responses line-by-line from the specified
+.Ar response-script
+file instead of prompting interactively.
+.It Fl l
+Instead of staging new changes, list paths which are already staged,
+along with the IDs of staged blob objects and stage status codes.
+If paths were provided on the command line, show the staged paths
+among the specified paths.
+Otherwise, show all staged paths.
+.It Fl p
+Instead of staging the entire content of a changed file, interactively
+select or reject changes for staging based on
+.Dq y
+(stage change),
+.Dq n
+(reject change), and
+.Dq q
+(quit staging this file) responses.
+If a file is in modified status, individual patches derived from the
+modified file content can be staged.
+Files in added or deleted status may only be staged or rejected in
+their entirety.
+.It Fl S
+Allow staging of symbolic links which point outside of the path space
+that is under version control.
+By default,
+.Cm got stage
+will reject such symbolic links due to safety concerns.
+As a precaution,
+.Nm
+may decide to represent such a symbolic link as a regular file which contains
+the link's target path, rather than creating an actual symbolic link which
+points outside of the work tree.
+Use of this option is discouraged because external mechanisms such as
+.Dq make obj
+are better suited for managing symbolic links to paths not under
+version control.
+.El
+.Pp
+.Cm got stage
+will refuse to run if certain preconditions are not met.
+If a file contains merge conflicts, these conflicts must be resolved first.
+If a file is found to be out of date relative to the head commit on the
+work tree's current branch, the file must be updated with
+.Cm got update
+before it can be staged (however, this does not prevent the file from
+becoming out-of-date at some point after having been staged).
+.Pp
+The
+.Cm got update ,
+.Cm got rebase ,
+.Cm got merge ,
+and
+.Cm got histedit
+commands will refuse to run while staged changes exist.
+If staged changes cannot be committed because a staged path
+is out of date, the path must be unstaged with
+.Cm got unstage
+before it can be updated with
+.Cm got update ,
+and may then be staged again if necessary.
+.Tg ug
+.It Xo
+.Cm unstage
+.Op Fl p
+.Op Fl F Ar response-script
+.Op Ar path ...
+.Xc
+.Dl Pq alias: Cm ug
+Merge staged changes back into the work tree and put affected paths
+back into non-staged status.
+If no
+.Ar path
+is specified, unstage all staged changes across the entire work tree.
+Otherwise, unstage changes at or within the specified paths.
+.Pp
+Show the status of each affected file, using the following status codes:
+.Bl -column YXZ description
+.It G Ta file was unstaged
+.It C Ta file was unstaged and conflicts occurred during merge
+.It ! Ta changes destined for a missing file were not merged
+.It D Ta file was staged as deleted and still is deleted
+.It d Ta file's deletion was prevented by local modifications
+.It \(a~ Ta changes destined for a non-regular file were not merged
+.El
+.Pp
+The options for
+.Cm got unstage
+are as follows:
+.Bl -tag -width Ds
+.It Fl F Ar response-script
+With the
+.Fl p
+option, read
+.Dq y ,
+.Dq n ,
+and
+.Dq q
+responses line-by-line from the specified
+.Ar response-script
+file instead of prompting interactively.
+.It Fl p
+Instead of unstaging the entire content of a changed file, interactively
+select or reject changes for unstaging based on
+.Dq y
+(unstage change),
+.Dq n
+(keep change staged), and
+.Dq q
+(quit unstaging this file) responses.
+If a file is staged in modified status, individual patches derived from the
+staged file content can be unstaged.
+Files staged in added or deleted status may only be unstaged in their entirety.
+.El
+.It Xo
+.Cm cat
+.Op Fl P
+.Op Fl c Ar commit
+.Op Fl r Ar repository-path
+.Ar arg ...
+.Xc
+Parse and print contents of objects to standard output in a line-based
+text format.
+Content of commit, tree, and tag objects is printed in a way similar
+to the actual content stored in such objects.
+Blob object contents are printed as they would appear in files on disk.
+.Pp
+Attempt to interpret each argument as a reference, a tag name, or
+an object ID SHA1 hash.
+References will be resolved to an object ID.
+Tag names will resolved to a tag object.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.Pp
+If none of the above interpretations produce a valid result, or if the
+.Fl P
+option is used, attempt to interpret the argument as a path which will
+be resolved to the ID of an object found at this path in the repository.
+.Pp
+The options for
+.Cm got cat
+are as follows:
+.Bl -tag -width Ds
+.It Fl c Ar commit
+Look up paths in the specified
+.Ar commit .
+If this option is not used, paths are looked up in the commit resolved
+via the repository's HEAD reference.
+The expected argument is a commit ID SHA1 hash or an existing reference
+or tag name which will be resolved to a commit ID.
+An abbreviated hash argument will be expanded to a full SHA1 hash
+automatically, provided the abbreviation is unique.
+.It Fl P
+Interpret all arguments as paths only.
+This option can be used to resolve ambiguity in cases where paths
+look like tag names, reference names, or object IDs.
+.It Fl r Ar repository-path
+Use the repository at the specified path.
+If not specified, assume the repository is located at or above the current
+working directory.
+If this directory is a
+.Nm
+work tree, use the repository path associated with this work tree.
+.El
+.It Cm info Op Ar path ...
+Display meta-data stored in a work tree.
+See
+.Xr got-worktree 5
+for details.
+.Pp
+The work tree to use is resolved implicitly by walking upwards from the
+current working directory.
+.Pp
+If one or more
+.Ar path
+arguments are specified, show additional per-file information for tracked
+files located at or within these paths.
+If a
+.Ar path
+argument corresponds to the work tree's root directory, display information
+for all tracked files.
+.El
+.Sh ENVIRONMENT
+.Bl -tag -width GOT_IGNORE_GITCONFIG
+.It Ev GOT_AUTHOR
+The author's name and email address, such as
+.Dq An Flan Hacker Aq Mt flan_hacker@openbsd.org .
+Used by the
+.Cm got commit ,
+.Cm got import ,
+.Cm got rebase ,
+.Cm got merge ,
+and
+.Cm got histedit
+commands.
+Because
+.Xr git 1
+may fail to parse commits without an email address in author data,
+.Nm
+attempts to reject
+.Ev GOT_AUTHOR
+environment variables with a missing email address.
+.Pp
+.Ev GOT_AUTHOR will be overridden by configuration settings in
+.Xr got.conf 5
+or by Git's
+.Dv user.name
+and
+.Dv user.email
+configuration settings in the repository's
+.Pa .git/config
+file.
+The
+.Dv user.name
+and
+.Dv user.email
+configuration settings contained in Git's global
+.Pa ~/.gitconfig
+configuration file will only be used if neither
+.Xr got.conf 5
+nor the
+.Ev GOT_AUTHOR
+environment variable provide author information.
+.It Ev GOT_IGNORE_GITCONFIG
+If this variable is set then any remote repository definitions or author
+information found in Git configuration files will be ignored.
+.It Ev GOT_LOG_DEFAULT_LIMIT
+The default limit on the number of commits traversed by
+.Cm got log .
+If set to zero, the limit is unbounded.
+This variable will be silently ignored if it is set to a non-numeric value.
+.It Ev VISUAL , EDITOR
+The editor spawned by
+.Cm got commit ,
+.Cm got histedit ,
+.Cm got import ,
+or
+.Cm got tag .
+If not set, the
+.Xr vi 1
+text editor will be spawned.
+.El
+.Sh FILES
+.Bl -tag -width packed-refs -compact
+.It Pa got.conf
+Repository-wide configuration settings for
+.Nm .
+If present, a
+.Xr got.conf 5
+configuration file located in the root directory of a Git repository
+supersedes any relevant settings in Git's
+.Pa config
+file.
+.Pp
+.It Pa .got/got.conf
+Worktree-specific configuration settings for
+.Nm .
+If present, a
+.Xr got.conf 5
+configuration file in the
+.Pa .got
+meta-data directory of a work tree supersedes any relevant settings in
+the repository's
+.Xr got.conf 5
+configuration file and Git's
+.Pa config
+file.
+.El
+.Sh EXIT STATUS
+.Ex -std got
+.Sh EXAMPLES
+Enable tab-completion of
+.Nm
+command names in
+.Xr ksh 1 :
+.Pp
+.Dl $ set -A complete_got_1 -- $(got -h 2>&1 | sed -n s/commands://p)
+.Pp
+Clone an existing Git repository for use with
+.Nm :
+.Pp
+.Dl $ cd /var/git/
+.Dl $ got clone ssh://git@github.com/openbsd/src.git
+.Pp
+Unfortunately, many of the popular Git hosting sites do not offer anonymous
+access via SSH.
+Such sites will require an account to be created, and a public SSH key to be
+uploaded to this account, before repository access via ssh:// URLs will work.
+.Pp
+Use of HTTP URLs currently requires
+.Xr git 1 :
+.Pp
+.Dl $ cd /var/git/
+.Dl $ git clone --bare https://github.com/openbsd/src.git
+.Pp
+Alternatively, for quick and dirty local testing of
+.Nm
+a new Git repository could be created and populated with files,
+e.g. from a temporary CVS checkout located at
+.Pa /tmp/src :
+.Pp
+.Dl $ gotadmin init /var/git/src.git
+.Dl $ got import -r /var/git/src.git -I CVS -I obj /tmp/src
+.Pp
+Check out a work tree from the Git repository to /usr/src:
+.Pp
+.Dl $ got checkout /var/git/src.git /usr/src
+.Pp
+View local changes in a work tree directory:
+.Pp
+.Dl $ got diff | less
+.Pp
+In a work tree, display files in a potentially problematic state:
+.Pp
+.Dl $ got status -s 'C!~?'
+.Pp
+Interactively revert selected local changes in a work tree directory:
+.Pp
+.Dl $ got revert -p -R\ .
+.Pp
+In a work tree or a git repository directory, list all branch references:
+.Pp
+.Dl $ got branch -l
+.Pp
+As above, but list the most recently modified branches only:
+.Pp
+.Dl $ got branch -lt | head
+.Pp
+In a work tree or a git repository directory, create a new branch called
+.Dq unified-buffer-cache
+which is forked off the
+.Dq master
+branch:
+.Pp
+.Dl $ got branch -c master unified-buffer-cache
+.Pp
+Switch an existing work tree to the branch
+.Dq unified-buffer-cache .
+Local changes in the work tree will be preserved and merged if necessary:
+.Pp
+.Dl $ got update -b unified-buffer-cache
+.Pp
+Create a new commit from local changes in a work tree directory.
+This new commit will become the head commit of the work tree's current branch:
+.Pp
+.Dl $ got commit
+.Pp
+In a work tree or a git repository directory, view changes committed in
+the 3 most recent commits to the work tree's branch, or the branch resolved
+via the repository's HEAD reference, respectively:
+.Pp
+.Dl $ got log -p -l 3
+.Pp
+As above, but display changes in the order in which
+.Xr patch 1
+could apply them in sequence:
+.Pp
+.Dl $ got log -p -l 3 -R
+.Pp
+In a work tree or a git repository directory, log the history of a subdirectory:
+.Pp
+.Dl $ got log sys/uvm
+.Pp
+While operating inside a work tree, paths are specified relative to the current
+working directory, so this command will log the subdirectory
+.Pa sys/uvm :
+.Pp
+.Dl $ cd sys/uvm && got log\ .
+.Pp
+And this command has the same effect:
+.Pp
+.Dl $ cd sys/dev/usb && got log ../../uvm
+.Pp
+And this command displays work tree meta-data about all tracked files:
+.Pp
+.Dl $ cd /usr/src
+.Dl $ got info\ . | less
+.Pp
+Add new files and remove obsolete files in a work tree directory:
+.Pp
+.Dl $ got add sys/uvm/uvm_ubc.c
+.Dl $ got remove sys/uvm/uvm_vnode.c
+.Pp
+Create a new commit from local changes in a work tree directory
+with a pre-defined log message.
+.Pp
+.Dl $ got commit -m 'unify the buffer cache'
+.Pp
+Alternatively, create a new commit from local changes in a work tree
+directory with a log message that has been prepared in the file
+.Pa /tmp/msg :
+.Pp
+.Dl $ got commit -F /tmp/msg
+.Pp
+Update any work tree checked out from the
+.Dq unified-buffer-cache
+branch to the latest commit on this branch:
+.Pp
+.Dl $ got update
+.Pp
+Roll file content on the unified-buffer-cache branch back by one commit,
+and then fetch the rolled-back change into the work tree as a local change
+to be amended and perhaps committed again:
+.Pp
+.Dl $ got backout unified-buffer-cache
+.Dl $ got commit -m 'roll back previous'
+.Dl $ # now back out the previous backout :-)
+.Dl $ got backout unified-buffer-cache
+.Pp
+Fetch new changes on the remote repository's
+.Dq master
+branch, making them visible on the local repository's
+.Dq origin/master
+branch:
+.Pp
+.Dl $ cd /usr/src
+.Dl $ got fetch
+.Pp
+In a repository created with a HTTP URL and
+.Cm git clone --bare
+the
+.Xr git-fetch 1
+command must be used instead:
+.Pp
+.Dl $ cd /var/git/src.git
+.Dl $ git fetch origin master:refs/remotes/origin/master
+.Pp
+Rebase the local
+.Dq master
+branch to merge the new changes that are now visible on the
+.Dq origin/master
+branch:
+.Pp
+.Dl $ cd /usr/src
+.Dl $ got update -b origin/master
+.Dl $ got rebase master
+.Pp
+Rebase the
+.Dq unified-buffer-cache
+branch on top of the new head commit of the
+.Dq master
+branch.
+.Pp
+.Dl $ got update -b master
+.Dl $ got rebase unified-buffer-cache
+.Pp
+Create a patch from all changes on the unified-buffer-cache branch.
+The patch can be mailed out for review and applied to
+.Ox Ns 's
+CVS tree:
+.Pp
+.Dl $ got diff master unified-buffer-cache > /tmp/ubc.diff
+.Pp
+Edit the entire commit history of the
+.Dq unified-buffer-cache
+branch:
+.Pp
+.Dl $ got update -b unified-buffer-cache
+.Dl $ got update -c master
+.Dl $ got histedit
+.Pp
+Before working against existing branches in a repository cloned with
+.Cm git clone --bare
+instead of
+.Cm got clone ,
+a Git
+.Dq refspec
+must be configured to map all references in the remote repository
+into the
+.Dq refs/remotes
+namespace of the local repository.
+This can be achieved by setting Git's
+.Pa remote.origin.fetch
+configuration variable to the value
+.Dq +refs/heads/*:refs/remotes/origin/*
+with the
+.Cm git config
+command:
+.Pp
+.Dl $ cd /var/git/repo
+.Dl $ git config remote.origin.fetch '+refs/heads/*:refs/remotes/origin/*'
+.Pp
+Additionally, the
+.Dq mirror
+option must be disabled:
+.Pp
+.Dl $ cd /var/git/repo
+.Dl $ git config remote.origin.mirror false
+.Pp
+Alternatively, the following
+.Xr git-fetch 1
+configuration item can be added manually to the Git repository's
+.Pa config
+file:
+.Pp
+.Dl [remote \&"origin\&"]
+.Dl url = ...
+.Dl fetch = +refs/heads/*:refs/remotes/origin/*
+.Dl mirror = false
+.Pp
+This configuration leaves the local repository's
+.Dq refs/heads
+namespace free for use by local branches checked out with
+.Cm got checkout
+and, if needed, created with
+.Cm got branch .
+Branches in the
+.Dq refs/remotes/origin
+namespace can now be updated with incoming changes from the remote
+repository with
+.Cm got fetch
+or
+.Xr git-fetch 1
+without extra command line arguments.
+Newly fetched changes can be examined with
+.Cm got log .
+.Pp
+Display changes on the remote repository's version of the
+.Dq master
+branch, as of the last time
+.Cm got fetch
+was run:
+.Pp
+.Dl $ got log -c origin/master | less
+.Pp
+As shown here, most commands accept abbreviated reference names such as
+.Dq origin/master
+instead of
+.Dq refs/remotes/origin/master .
+The latter is only needed in case of ambiguity.
+.Pp
+.Cm got rebase
+can be used to merge changes which are visible on the
+.Dq origin/master
+branch into the
+.Dq master
+branch.
+This will also merge local changes, if any, with the incoming changes:
+.Pp
+.Dl $ got update -b origin/master
+.Dl $ got rebase master
+.Pp
+In order to make changes committed to the
+.Dq unified-buffer-cache
+visible on the
+.Dq master
+branch, the
+.Dq unified-buffer-cache
+branch can be rebased onto the
+.Dq master
+branch:
+.Pp
+.Dl $ got update -b master
+.Dl $ got rebase unified-buffer-cache
+.Pp
+Changes on the
+.Dq unified-buffer-cache
+branch can now be made visible on the
+.Dq master
+branch with
+.Cm got integrate .
+Because the rebase operation switched the work tree to the
+.Dq unified-buffer-cache
+branch, the work tree must be switched back to the
+.Dq master
+branch first:
+.Pp
+.Dl $ got update -b master
+.Dl $ got integrate unified-buffer-cache
+.Pp
+On the
+.Dq master
+branch, log messages for local changes can now be amended with
+.Dq OK
+by other developers and any other important new information:
+.Pp
+.Dl $ got update -c origin/master
+.Dl $ got histedit -m
+.Pp
+If the remote repository offers write access, local changes on the
+.Dq master
+branch can be sent to the remote repository with
+.Cm got send .
+Usually,
+.Cm got send
+can be run without further arguments.
+The arguments shown here match defaults, provided the work tree's
+current branch is the
+.Dq master
+branch:
+.Pp
+.Dl $ got send -b master origin
+.Pp
+If the remote repository requires the HTTPS protocol, the
+.Xr git-push 1
+command must be used instead:
+.Pp
+.Dl $ cd /var/git/src.git
+.Dl $ git push origin master
+.Pp
+When making contributions to projects which use the
+.Dq pull request
+workflow, SSH protocol repository access needs to be set up first.
+Once an account has been created on a Git hosting site it should
+be possible to upload a public SSH key for repository access
+authentication.
+.Pp
+The
+.Dq pull request
+workflow will usually involve two remote repositories.
+In the real-life example below, the
+.Dq origin
+repository was forked from the
+.Dq upstream
+repository by using the Git hosting site's web interface.
+The
+.Xr got.conf 5
+file in the local repository describes both remote repositories:
+.Bd -literal -offset indent
+# Jelmers's repository, which accepts pull requests
+remote "upstream" {
+	server git@github.com
+	protocol ssh
+	repository "/jelmer/dulwich"
+	branch { "master" }
+}
+
+# Stefan's fork, used as the default remote repository
+remote "origin" {
+	server git@github.com
+	protocol ssh
+	repository "/stspdotname/dulwich"
+	branch { "master" }
+}
+.Ed
+.Pp
+With this configuration, Stefan can create commits on
+.Dq refs/heads/master
+and send them to the
+.Dq origin
+repository by running:
+.Pp
+.Dl $ got send -b master origin
+.Pp
+The changes can now be proposed to Jelmer by opening a pull request
+via the Git hosting site's web interface.
+If Jelmer requests further changes to be made, additional commits
+can be created on the
+.Dq master
+branch and be added to the pull request by running
+.Cd got send
+again.
+.Pp
+If Jelmer prefers additional commits to be
+.Dq squashed
+then the following commands can be used to achieve this:
+.Pp
+.Dl $ got update -b master
+.Dl $ got update -c origin/master
+.Dl $ got histedit -f
+.Dl $ got send -f -b master origin
+.Pp
+In addition to reviewing the pull request in the web user interface,
+Jelmer can fetch the pull request's branch into his local repository
+and create a local branch which contains the proposed changes:
+.Pp
+.Dl $ got fetch -R refs/pull/1046/head origin
+.Dl $ got branch -c refs/remotes/origin/pull/1046/head pr1046
+.Pp
+Once Jelmer has accepted the pull request, Stefan can fetch the
+merged changes, and possibly several other new changes, by running:
+.Pp
+.Dl $ got fetch upstream
+.Pp
+The merged changes will now be visible under the reference
+.Dq refs/remotes/upstream/master .
+The local
+.Dq master
+branch can now be rebased on top of the latest changes
+from upstream:
+.Pp
+.Dl $ got update -b upstream/master
+.Dl $ got rebase master
+.Pp
+As an alternative to
+.Cm got rebase ,
+branches can be merged with
+.Cm got merge :
+.Pp
+.Dl $ got update -b master
+.Dl $ got merge upstream/master
+.Pp
+The question of whether to rebase or merge branches is philosophical.
+When in doubt, refer to the software project's policies set by project
+maintainers.
+.Pp
+As a final step, the forked repository's copy of the master branch needs
+to be kept in sync by sending the new changes there:
+.Pp
+.Dl $ got send -f -b master origin
+.Pp
+If multiple pull requests need to be managed in parallel, a separate branch
+must be created for each pull request with
+.Cm got branch .
+Each such branch can then be used as above, in place of
+.Dq refs/heads/master .
+Changes for any accepted pull requests will still appear under
+.Dq refs/remotes/upstream/master,
+regardless of which branch was used in the forked repository to
+create a pull request.
+.Sh SEE ALSO
+.Xr gotadmin 1 ,
+.Xr tog 1 ,
+.Xr git-repository 5 ,
+.Xr got-worktree 5 ,
+.Xr got.conf 5 ,
+.Xr gotwebd 8
+.Sh AUTHORS
+.An Anthony J. Bentley Aq Mt bentley@openbsd.org
+.An Christian Weisgerber Aq Mt naddy@openbsd.org
+.An Hiltjo Posthuma Aq Mt hiltjo@codemadness.org
+.An Josh Rickmar Aq Mt jrick@zettaport.com
+.An Joshua Stein Aq Mt jcs@openbsd.org
+.An Klemens Nanni Aq Mt kn@openbsd.org
+.An Martin Pieuchot Aq Mt mpi@openbsd.org
+.An Neels Hofmeyr Aq Mt neels@hofmeyr.de
+.An Omar Polo Aq Mt op@openbsd.org
+.An Ori Bernstein Aq Mt ori@openbsd.org
+.An Sebastien Marie Aq Mt semarie@openbsd.org
+.An Stefan Sperling Aq Mt stsp@openbsd.org
+.An Steven McDonald Aq Mt steven@steven-mcdonald.id.au
+.An Theo Buehler Aq Mt tb@openbsd.org
+.An Thomas Adam Aq Mt thomas@xteddy.org
+.An Tracey Emery Aq Mt tracey@traceyemery.net
+.An Yang Zhong Aq Mt yzhong@freebsdfoundation.org
+.Pp
+Parts of
+.Nm ,
+.Xr tog 1 ,
+and
+.Xr gotwebd 8
+were derived from code under copyright by:
+.Pp
+.An Caldera International
+.An Daniel Hartmeier
+.An Esben Norby
+.An Henning Brauer
+.An Håkan Olsson
+.An Ingo Schwarze
+.An Jean-Francois Brousseau
+.An Joris Vink
+.An Jyri J. Virkki
+.An Larry Wall
+.An Markus Friedl
+.An Niall O'Higgins
+.An Niklas Hallqvist
+.An Ray Lai
+.An Ryan McBride
+.An Theo de Raadt
+.An Todd C. Miller
+.An Xavier Santolaria
+.Pp
+.Nm
+contains code contributed to the public domain by
+.An Austin Appleby .
+.Sh CAVEATS
+.Nm
+is a work-in-progress and some features remain to be implemented.
+.Pp
+At present, the user has to fall back on
+.Xr git 1
+to perform some tasks.
+In particular:
+.Bl -bullet
+.It
+Reading from remote repositories over HTTP or HTTPS protocols requires
+.Xr git-clone 1
+and
+.Xr git-fetch 1 .
+.It
+Writing to remote repositories over HTTP or HTTPS protocols requires
+.Xr git-push 1 .
+.It
+The creation of merge commits with more than two parent commits requires
+.Xr git-merge 1 .
+.It
+In situations where files or directories were moved around
+.Cm got
+will not automatically merge changes to new locations and
+.Xr git 1
+will usually produce better results.
+.El
blob - /dev/null
blob + 33fa9d308c2a4c7ed10e872de41279f2c5ba44bc (mode 644)
--- /dev/null
+++ cvg/got.c
@@ -0,0 +1,14305 @@
+/*
+ * Copyright (c) 2017 Martin Pieuchot <mpi@openbsd.org>
+ * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
+ * Copyright (c) 2020 Ori Bernstein <ori@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/queue.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <locale.h>
+#include <ctype.h>
+#include <sha1.h>
+#include <sha2.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <time.h>
+#include <paths.h>
+#include <regex.h>
+#include <getopt.h>
+#include <util.h>
+
+#include "got_version.h"
+#include "got_error.h"
+#include "got_object.h"
+#include "got_reference.h"
+#include "got_repository.h"
+#include "got_path.h"
+#include "got_cancel.h"
+#include "got_worktree.h"
+#include "got_diff.h"
+#include "got_commit_graph.h"
+#include "got_fetch.h"
+#include "got_send.h"
+#include "got_blame.h"
+#include "got_privsep.h"
+#include "got_opentemp.h"
+#include "got_gotconfig.h"
+#include "got_dial.h"
+#include "got_patch.h"
+#include "got_sigs.h"
+#include "got_date.h"
+
+#ifndef nitems
+#define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
+#endif
+
+static volatile sig_atomic_t sigint_received;
+static volatile sig_atomic_t sigpipe_received;
+
+static void
+catch_sigint(int signo)
+{
+	sigint_received = 1;
+}
+
+static void
+catch_sigpipe(int signo)
+{
+	sigpipe_received = 1;
+}
+
+
+struct got_cmd {
+	const char	*cmd_name;
+	const struct got_error *(*cmd_main)(int, char *[]);
+	void		(*cmd_usage)(void);
+	const char	*cmd_alias;
+};
+
+__dead static void	usage(int, int);
+__dead static void	usage_import(void);
+__dead static void	usage_clone(void);
+__dead static void	usage_fetch(void);
+__dead static void	usage_checkout(void);
+__dead static void	usage_update(void);
+__dead static void	usage_log(void);
+__dead static void	usage_diff(void);
+__dead static void	usage_blame(void);
+__dead static void	usage_tree(void);
+__dead static void	usage_status(void);
+__dead static void	usage_ref(void);
+__dead static void	usage_branch(void);
+__dead static void	usage_tag(void);
+__dead static void	usage_add(void);
+__dead static void	usage_remove(void);
+__dead static void	usage_patch(void);
+__dead static void	usage_revert(void);
+__dead static void	usage_commit(void);
+__dead static void	usage_send(void);
+__dead static void	usage_cherrypick(void);
+__dead static void	usage_backout(void);
+__dead static void	usage_rebase(void);
+__dead static void	usage_histedit(void);
+__dead static void	usage_integrate(void);
+__dead static void	usage_merge(void);
+__dead static void	usage_stage(void);
+__dead static void	usage_unstage(void);
+__dead static void	usage_cat(void);
+__dead static void	usage_info(void);
+
+static const struct got_error*		cmd_import(int, char *[]);
+static const struct got_error*		cmd_clone(int, char *[]);
+static const struct got_error*		cmd_fetch(int, char *[]);
+static const struct got_error*		cmd_checkout(int, char *[]);
+static const struct got_error*		cmd_update(int, char *[]);
+static const struct got_error*		cmd_log(int, char *[]);
+static const struct got_error*		cmd_diff(int, char *[]);
+static const struct got_error*		cmd_blame(int, char *[]);
+static const struct got_error*		cmd_tree(int, char *[]);
+static const struct got_error*		cmd_status(int, char *[]);
+static const struct got_error*		cmd_ref(int, char *[]);
+static const struct got_error*		cmd_branch(int, char *[]);
+static const struct got_error*		cmd_tag(int, char *[]);
+static const struct got_error*		cmd_add(int, char *[]);
+static const struct got_error*		cmd_remove(int, char *[]);
+static const struct got_error*		cmd_patch(int, char *[]);
+static const struct got_error*		cmd_revert(int, char *[]);
+static const struct got_error*		cmd_commit(int, char *[]);
+static const struct got_error*		cmd_send(int, char *[]);
+static const struct got_error*		cmd_cherrypick(int, char *[]);
+static const struct got_error*		cmd_backout(int, char *[]);
+static const struct got_error*		cmd_rebase(int, char *[]);
+static const struct got_error*		cmd_histedit(int, char *[]);
+static const struct got_error*		cmd_integrate(int, char *[]);
+static const struct got_error*		cmd_merge(int, char *[]);
+static const struct got_error*		cmd_stage(int, char *[]);
+static const struct got_error*		cmd_unstage(int, char *[]);
+static const struct got_error*		cmd_cat(int, char *[]);
+static const struct got_error*		cmd_info(int, char *[]);
+
+static const struct got_cmd got_commands[] = {
+	{ "import",	cmd_import,	usage_import,	"im" },
+	{ "clone",	cmd_clone,	usage_clone,	"cl" },
+	{ "fetch",	cmd_fetch,	usage_fetch,	"fe" },
+	{ "checkout",	cmd_checkout,	usage_checkout,	"co" },
+	{ "update",	cmd_update,	usage_update,	"up" },
+	{ "log",	cmd_log,	usage_log,	"" },
+	{ "diff",	cmd_diff,	usage_diff,	"di" },
+	{ "blame",	cmd_blame,	usage_blame,	"bl" },
+	{ "tree",	cmd_tree,	usage_tree,	"tr" },
+	{ "status",	cmd_status,	usage_status,	"st" },
+	{ "ref",	cmd_ref,	usage_ref,	"" },
+	{ "branch",	cmd_branch,	usage_branch,	"br" },
+	{ "tag",	cmd_tag,	usage_tag,	"" },
+	{ "add",	cmd_add,	usage_add,	"" },
+	{ "remove",	cmd_remove,	usage_remove,	"rm" },
+	{ "patch",	cmd_patch,	usage_patch,	"pa" },
+	{ "revert",	cmd_revert,	usage_revert,	"rv" },
+	{ "commit",	cmd_commit,	usage_commit,	"ci" },
+	{ "send",	cmd_send,	usage_send,	"se" },
+	{ "cherrypick",	cmd_cherrypick,	usage_cherrypick, "cy" },
+	{ "backout",	cmd_backout,	usage_backout,	"bo" },
+	{ "rebase",	cmd_rebase,	usage_rebase,	"rb" },
+	{ "histedit",	cmd_histedit,	usage_histedit,	"he" },
+	{ "integrate",  cmd_integrate,  usage_integrate,"ig" },
+	{ "merge",	cmd_merge,	usage_merge,	"mg" },
+	{ "stage",	cmd_stage,	usage_stage,	"sg" },
+	{ "unstage",	cmd_unstage,	usage_unstage,	"ug" },
+	{ "cat",	cmd_cat,	usage_cat,	"" },
+	{ "info",	cmd_info,	usage_info,	"" },
+};
+
+static void
+list_commands(FILE *fp)
+{
+	size_t i;
+
+	fprintf(fp, "commands:");
+	for (i = 0; i < nitems(got_commands); i++) {
+		const struct got_cmd *cmd = &got_commands[i];
+		fprintf(fp, " %s", cmd->cmd_name);
+	}
+	fputc('\n', fp);
+}
+
+__dead static void
+option_conflict(char a, char b)
+{
+	errx(1, "-%c and -%c options are mutually exclusive", a, b);
+}
+
+int
+main(int argc, char *argv[])
+{
+	const struct got_cmd *cmd;
+	size_t i;
+	int ch;
+	int hflag = 0, Vflag = 0;
+	static const struct option longopts[] = {
+	    { "version", no_argument, NULL, 'V' },
+	    { NULL, 0, NULL, 0 }
+	};
+
+	setlocale(LC_CTYPE, "");
+
+	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
+		switch (ch) {
+		case 'h':
+			hflag = 1;
+			break;
+		case 'V':
+			Vflag = 1;
+			break;
+		default:
+			usage(hflag, 1);
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+	optind = 1;
+	optreset = 1;
+
+	if (Vflag) {
+		got_version_print_str();
+		return 0;
+	}
+
+	if (argc <= 0)
+		usage(hflag, hflag ? 0 : 1);
+
+	signal(SIGINT, catch_sigint);
+	signal(SIGPIPE, catch_sigpipe);
+
+	for (i = 0; i < nitems(got_commands); i++) {
+		const struct got_error *error;
+
+		cmd = &got_commands[i];
+
+		if (strcmp(cmd->cmd_name, argv[0]) != 0 &&
+		    strcmp(cmd->cmd_alias, argv[0]) != 0)
+			continue;
+
+		if (hflag)
+			cmd->cmd_usage();
+
+		error = cmd->cmd_main(argc, argv);
+		if (error && error->code != GOT_ERR_CANCELLED &&
+		    error->code != GOT_ERR_PRIVSEP_EXIT &&
+		    !(sigpipe_received &&
+		      error->code == GOT_ERR_ERRNO && errno == EPIPE) &&
+		    !(sigint_received &&
+		      error->code == GOT_ERR_ERRNO && errno == EINTR)) {
+			fflush(stdout);
+			fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
+			return 1;
+		}
+
+		return 0;
+	}
+
+	fprintf(stderr, "%s: unknown command '%s'\n", getprogname(), argv[0]);
+	list_commands(stderr);
+	return 1;
+}
+
+__dead static void
+usage(int hflag, int status)
+{
+	FILE *fp = (status == 0) ? stdout : stderr;
+
+	fprintf(fp, "usage: %s [-hV] command [arg ...]\n",
+	    getprogname());
+	if (hflag)
+		list_commands(fp);
+	exit(status);
+}
+
+static const struct got_error *
+get_editor(char **abspath)
+{
+	const struct got_error *err = NULL;
+	const char *editor;
+
+	*abspath = NULL;
+
+	editor = getenv("VISUAL");
+	if (editor == NULL)
+		editor = getenv("EDITOR");
+
+	if (editor) {
+		err = got_path_find_prog(abspath, editor);
+		if (err)
+			return err;
+	}
+
+	if (*abspath == NULL) {
+		*abspath = strdup("/usr/bin/vi");
+		if (*abspath == NULL)
+			return got_error_from_errno("strdup");
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+apply_unveil(const char *repo_path, int repo_read_only,
+    const char *worktree_path)
+{
+	const struct got_error *err;
+
+#ifdef PROFILE
+	if (unveil("gmon.out", "rwc") != 0)
+		return got_error_from_errno2("unveil", "gmon.out");
+#endif
+	if (repo_path && unveil(repo_path, repo_read_only ? "r" : "rwc") != 0)
+		return got_error_from_errno2("unveil", repo_path);
+
+	if (worktree_path && unveil(worktree_path, "rwc") != 0)
+		return got_error_from_errno2("unveil", worktree_path);
+
+	if (unveil(GOT_TMPDIR_STR, "rwc") != 0)
+		return got_error_from_errno2("unveil", GOT_TMPDIR_STR);
+
+	err = got_privsep_unveil_exec_helpers();
+	if (err != NULL)
+		return err;
+
+	if (unveil(NULL, NULL) != 0)
+		return got_error_from_errno("unveil");
+
+	return NULL;
+}
+
+__dead static void
+usage_import(void)
+{
+	fprintf(stderr, "usage: %s import [-b branch] [-I pattern] [-m message] "
+	    "[-r repository-path] directory\n", getprogname());
+	exit(1);
+}
+
+static int
+spawn_editor(const char *editor, const char *file)
+{
+	pid_t pid;
+	sig_t sighup, sigint, sigquit;
+	int st = -1;
+
+	sighup = signal(SIGHUP, SIG_IGN);
+	sigint = signal(SIGINT, SIG_IGN);
+	sigquit = signal(SIGQUIT, SIG_IGN);
+
+	switch (pid = fork()) {
+	case -1:
+		goto doneediting;
+	case 0:
+		execl(editor, editor, file, (char *)NULL);
+		_exit(127);
+	}
+
+	while (waitpid(pid, &st, 0) == -1)
+		if (errno != EINTR)
+			break;
+
+doneediting:
+	(void)signal(SIGHUP, sighup);
+	(void)signal(SIGINT, sigint);
+	(void)signal(SIGQUIT, sigquit);
+
+	if (!WIFEXITED(st)) {
+		errno = EINTR;
+		return -1;
+	}
+
+	return WEXITSTATUS(st);
+}
+
+static const struct got_error *
+read_logmsg(char **logmsg, size_t *len, FILE *fp, size_t filesize)
+{
+	const struct got_error *err = NULL;
+	char *line = NULL;
+	size_t linesize = 0;
+
+	*logmsg = NULL;
+	*len = 0;
+
+	if (fseeko(fp, 0L, SEEK_SET) == -1)
+		return got_error_from_errno("fseeko");
+
+	*logmsg = malloc(filesize + 1);
+	if (*logmsg == NULL)
+		return got_error_from_errno("malloc");
+	(*logmsg)[0] = '\0';
+
+	while (getline(&line, &linesize, fp) != -1) {
+		if (line[0] == '#' || (*len == 0 && line[0] == '\n'))
+			continue; /* remove comments and leading empty lines */
+		*len = strlcat(*logmsg, line, filesize + 1);
+		if (*len >= filesize + 1) {
+			err = got_error(GOT_ERR_NO_SPACE);
+			goto done;
+		}
+	}
+	if (ferror(fp)) {
+		err = got_ferror(fp, GOT_ERR_IO);
+		goto done;
+	}
+
+	while (*len > 0 && (*logmsg)[*len - 1] == '\n') {
+		(*logmsg)[*len - 1] = '\0';
+		(*len)--;
+	}
+done:
+	free(line);
+	if (err) {
+		free(*logmsg);
+		*logmsg = NULL;
+		*len = 0;
+	}
+	return err;
+}
+
+static const struct got_error *
+edit_logmsg(char **logmsg, const char *editor, const char *logmsg_path,
+    const char *initial_content, size_t initial_content_len,
+    int require_modification)
+{
+	const struct got_error *err = NULL;
+	struct stat st, st2;
+	FILE *fp = NULL;
+	size_t logmsg_len;
+
+	*logmsg = NULL;
+
+	if (stat(logmsg_path, &st) == -1)
+		return got_error_from_errno2("stat", logmsg_path);
+
+	if (spawn_editor(editor, logmsg_path) == -1)
+		return got_error_from_errno("failed spawning editor");
+
+	if (require_modification) {
+		struct timespec timeout;
+
+		timeout.tv_sec = 0;
+		timeout.tv_nsec = 1;
+		nanosleep(&timeout,  NULL);
+	}
+
+	if (stat(logmsg_path, &st2) == -1)
+		return got_error_from_errno("stat");
+
+	if (require_modification && st.st_size == st2.st_size &&
+	    timespeccmp(&st.st_mtim, &st2.st_mtim, ==))
+		return got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
+		    "no changes made to commit message, aborting");
+
+	fp = fopen(logmsg_path, "re");
+	if (fp == NULL) {
+		err = got_error_from_errno("fopen");
+		goto done;
+	}
+
+	/* strip comments and leading/trailing newlines */
+	err = read_logmsg(logmsg, &logmsg_len, fp, st2.st_size);
+	if (err)
+		goto done;
+	if (logmsg_len == 0) {
+		err = got_error_msg(GOT_ERR_COMMIT_MSG_EMPTY,
+		    "commit message cannot be empty, aborting");
+		goto done;
+	}
+done:
+	if (fp && fclose(fp) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (err) {
+		free(*logmsg);
+		*logmsg = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+collect_import_msg(char **logmsg, char **logmsg_path, const char *editor,
+    const char *path_dir, const char *branch_name)
+{
+	char *initial_content = NULL;
+	const struct got_error *err = NULL;
+	int initial_content_len;
+	int fd = -1;
+
+	initial_content_len = asprintf(&initial_content,
+	    "\n# %s to be imported to branch %s\n", path_dir,
+	    branch_name);
+	if (initial_content_len == -1)
+		return got_error_from_errno("asprintf");
+
+	err = got_opentemp_named_fd(logmsg_path, &fd,
+	    GOT_TMPDIR_STR "/got-importmsg", "");
+	if (err)
+		goto done;
+
+	if (write(fd, initial_content, initial_content_len) == -1) {
+		err = got_error_from_errno2("write", *logmsg_path);
+		goto done;
+	}
+	if (close(fd) == -1) {
+		err = got_error_from_errno2("close", *logmsg_path);
+		goto done;
+	}
+	fd = -1;
+
+	err = edit_logmsg(logmsg, editor, *logmsg_path, initial_content,
+	    initial_content_len, 1);
+done:
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno2("close", *logmsg_path);
+	free(initial_content);
+	if (err) {
+		free(*logmsg_path);
+		*logmsg_path = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+import_progress(void *arg, const char *path)
+{
+	printf("A  %s\n", path);
+	return NULL;
+}
+
+static const struct got_error *
+valid_author(const char *author)
+{
+	const char *email = author;
+
+	/*
+	 * Git' expects the author (or committer) to be in the form
+	 * "name <email>", which are mostly free form (see the
+	 * "committer" description in git-fast-import(1)).  We're only
+	 * doing this to avoid git's object parser breaking on commits
+	 * we create.
+	 */
+
+	while (*author && *author != '\n' && *author != '<' && *author != '>')
+		author++;
+	if (author != email && *author == '<' && *(author - 1) != ' ')
+		return got_error_fmt(GOT_ERR_COMMIT_BAD_AUTHOR, "%s: space "
+		    "between author name and email required", email);
+	if (*author++ != '<')
+		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
+	while (*author && *author != '\n' && *author != '<' && *author != '>')
+		author++;
+	if (strcmp(author, ">") != 0)
+		return got_error_fmt(GOT_ERR_COMMIT_NO_EMAIL, "%s", email);
+	return NULL;
+}
+
+static const struct got_error *
+get_author(char **author, struct got_repository *repo,
+    struct got_worktree *worktree)
+{
+	const struct got_error *err = NULL;
+	const char *got_author = NULL, *name, *email;
+	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
+
+	*author = NULL;
+
+	if (worktree)
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+	repo_conf = got_repo_get_gotconfig(repo);
+
+	/*
+	 * Priority of potential author information sources, from most
+	 * significant to least significant:
+	 * 1) work tree's .got/got.conf file
+	 * 2) repository's got.conf file
+	 * 3) repository's git config file
+	 * 4) environment variables
+	 * 5) global git config files (in user's home directory or /etc)
+	 */
+
+	if (worktree_conf)
+		got_author = got_gotconfig_get_author(worktree_conf);
+	if (got_author == NULL)
+		got_author = got_gotconfig_get_author(repo_conf);
+	if (got_author == NULL) {
+		name = got_repo_get_gitconfig_author_name(repo);
+		email = got_repo_get_gitconfig_author_email(repo);
+		if (name && email) {
+			if (asprintf(author, "%s <%s>", name, email) == -1)
+				return got_error_from_errno("asprintf");
+			return NULL;
+		}
+
+		got_author = getenv("GOT_AUTHOR");
+		if (got_author == NULL) {
+			name = got_repo_get_global_gitconfig_author_name(repo);
+			email = got_repo_get_global_gitconfig_author_email(
+			    repo);
+			if (name && email) {
+				if (asprintf(author, "%s <%s>", name, email)
+				    == -1)
+					return got_error_from_errno("asprintf");
+				return NULL;
+			}
+			/* TODO: Look up user in password database? */
+			return got_error(GOT_ERR_COMMIT_NO_AUTHOR);
+		}
+	}
+
+	*author = strdup(got_author);
+	if (*author == NULL)
+		return got_error_from_errno("strdup");
+
+	err = valid_author(*author);
+	if (err) {
+		free(*author);
+		*author = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+get_allowed_signers(char **allowed_signers, struct got_repository *repo,
+    struct got_worktree *worktree)
+{
+	const char *got_allowed_signers = NULL;
+	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
+
+	*allowed_signers = NULL;
+
+	if (worktree)
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+	repo_conf = got_repo_get_gotconfig(repo);
+
+	/*
+	 * Priority of potential author information sources, from most
+	 * significant to least significant:
+	 * 1) work tree's .got/got.conf file
+	 * 2) repository's got.conf file
+	 */
+
+	if (worktree_conf)
+		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
+		    worktree_conf);
+	if (got_allowed_signers == NULL)
+		got_allowed_signers = got_gotconfig_get_allowed_signers_file(
+		    repo_conf);
+
+	if (got_allowed_signers) {
+		*allowed_signers = strdup(got_allowed_signers);
+		if (*allowed_signers == NULL)
+			return got_error_from_errno("strdup");
+	}
+	return NULL;
+}
+
+static const struct got_error *
+get_revoked_signers(char **revoked_signers, struct got_repository *repo,
+    struct got_worktree *worktree)
+{
+	const char *got_revoked_signers = NULL;
+	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
+
+	*revoked_signers = NULL;
+
+	if (worktree)
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+	repo_conf = got_repo_get_gotconfig(repo);
+
+	/*
+	 * Priority of potential author information sources, from most
+	 * significant to least significant:
+	 * 1) work tree's .got/got.conf file
+	 * 2) repository's got.conf file
+	 */
+
+	if (worktree_conf)
+		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
+		    worktree_conf);
+	if (got_revoked_signers == NULL)
+		got_revoked_signers = got_gotconfig_get_revoked_signers_file(
+		    repo_conf);
+
+	if (got_revoked_signers) {
+		*revoked_signers = strdup(got_revoked_signers);
+		if (*revoked_signers == NULL)
+			return got_error_from_errno("strdup");
+	}
+	return NULL;
+}
+
+static const char *
+get_signer_id(struct got_repository *repo, struct got_worktree *worktree)
+{
+	const char *got_signer_id = NULL;
+	const struct got_gotconfig *worktree_conf = NULL, *repo_conf = NULL;
+
+	if (worktree)
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+	repo_conf = got_repo_get_gotconfig(repo);
+
+	/*
+	 * Priority of potential author information sources, from most
+	 * significant to least significant:
+	 * 1) work tree's .got/got.conf file
+	 * 2) repository's got.conf file
+	 */
+
+	if (worktree_conf)
+		got_signer_id = got_gotconfig_get_signer_id(worktree_conf);
+	if (got_signer_id == NULL)
+		got_signer_id = got_gotconfig_get_signer_id(repo_conf);
+
+	return got_signer_id;
+}
+
+static const struct got_error *
+get_gitconfig_path(char **gitconfig_path)
+{
+	const char *homedir = getenv("HOME");
+
+	*gitconfig_path = NULL;
+	if (homedir) {
+		if (asprintf(gitconfig_path, "%s/.gitconfig", homedir) == -1)
+			return got_error_from_errno("asprintf");
+
+	}
+	return NULL;
+}
+
+static const struct got_error *
+cmd_import(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	char *path_dir = NULL, *repo_path = NULL, *logmsg = NULL;
+	char *gitconfig_path = NULL, *editor = NULL, *author = NULL;
+	const char *branch_name = NULL;
+	char *id_str = NULL, *logmsg_path = NULL;
+	char refname[PATH_MAX] = "refs/heads/";
+	struct got_repository *repo = NULL;
+	struct got_reference *branch_ref = NULL, *head_ref = NULL;
+	struct got_object_id *new_commit_id = NULL;
+	int ch, n = 0;
+	struct got_pathlist_head ignores;
+	struct got_pathlist_entry *pe;
+	int preserve_logmsg = 0;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&ignores);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "b:I:m:r:")) != -1) {
+		switch (ch) {
+		case 'b':
+			branch_name = optarg;
+			break;
+		case 'I':
+			if (optarg[0] == '\0')
+				break;
+			error = got_pathlist_insert(&pe, &ignores, optarg,
+			    NULL);
+			if (error)
+				goto done;
+			break;
+		case 'm':
+			logmsg = strdup(optarg);
+			if (logmsg == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL) {
+				error = got_error_from_errno2("realpath",
+				    optarg);
+				goto done;
+			}
+			break;
+		default:
+			usage_import();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 1)
+		usage_import();
+
+	if (repo_path == NULL) {
+		repo_path = getcwd(NULL, 0);
+		if (repo_path == NULL)
+			return got_error_from_errno("getcwd");
+	}
+	got_path_strip_trailing_slashes(repo_path);
+	error = get_gitconfig_path(&gitconfig_path);
+	if (error)
+		goto done;
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+	error = got_repo_open(&repo, repo_path, gitconfig_path, pack_fds);
+	if (error)
+		goto done;
+
+	error = get_author(&author, repo, NULL);
+	if (error)
+		return error;
+
+	/*
+	 * Don't let the user create a branch name with a leading '-'.
+	 * While technically a valid reference name, this case is usually
+	 * an unintended typo.
+	 */
+	if (branch_name && branch_name[0] == '-')
+		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
+
+	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
+	if (error && error->code != GOT_ERR_NOT_REF)
+		goto done;
+
+	if (branch_name)
+		n = strlcat(refname, branch_name, sizeof(refname));
+	else if (head_ref && got_ref_is_symbolic(head_ref))
+		n = strlcpy(refname, got_ref_get_symref_target(head_ref),
+		    sizeof(refname));
+	else
+		n = strlcat(refname, "main", sizeof(refname));
+	if (n >= sizeof(refname)) {
+		error = got_error(GOT_ERR_NO_SPACE);
+		goto done;
+	}
+
+	error = got_ref_open(&branch_ref, repo, refname, 0);
+	if (error) {
+		if (error->code != GOT_ERR_NOT_REF)
+			goto done;
+	} else {
+		error = got_error_msg(GOT_ERR_BRANCH_EXISTS,
+		    "import target branch already exists");
+		goto done;
+	}
+
+	path_dir = realpath(argv[0], NULL);
+	if (path_dir == NULL) {
+		error = got_error_from_errno2("realpath", argv[0]);
+		goto done;
+	}
+	got_path_strip_trailing_slashes(path_dir);
+
+	/*
+	 * unveil(2) traverses exec(2); if an editor is used we have
+	 * to apply unveil after the log message has been written.
+	 */
+	if (logmsg == NULL || *logmsg == '\0') {
+		error = get_editor(&editor);
+		if (error)
+			goto done;
+		free(logmsg);
+		error = collect_import_msg(&logmsg, &logmsg_path, editor,
+		    path_dir, refname);
+		if (error) {
+			if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
+			    logmsg_path != NULL)
+				preserve_logmsg = 1;
+			goto done;
+		}
+	}
+
+	if (unveil(path_dir, "r") != 0) {
+		error = got_error_from_errno2("unveil", path_dir);
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
+	if (error) {
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_repo_import(&new_commit_id, path_dir, logmsg,
+	    author, &ignores, repo, import_progress, NULL);
+	if (error) {
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_ref_alloc(&branch_ref, refname, new_commit_id);
+	if (error) {
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_ref_write(branch_ref, repo);
+	if (error) {
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_object_id_str(&id_str, new_commit_id);
+	if (error) {
+		if (logmsg_path)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
+	if (error) {
+		if (error->code != GOT_ERR_NOT_REF) {
+			if (logmsg_path)
+				preserve_logmsg = 1;
+			goto done;
+		}
+
+		error = got_ref_alloc_symref(&head_ref, GOT_REF_HEAD,
+		    branch_ref);
+		if (error) {
+			if (logmsg_path)
+				preserve_logmsg = 1;
+			goto done;
+		}
+
+		error = got_ref_write(head_ref, repo);
+		if (error) {
+			if (logmsg_path)
+				preserve_logmsg = 1;
+			goto done;
+		}
+	}
+
+	printf("Created branch %s with commit %s\n",
+	    got_ref_get_name(branch_ref), id_str);
+done:
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (preserve_logmsg) {
+		fprintf(stderr, "%s: log message preserved in %s\n",
+		    getprogname(), logmsg_path);
+	} else if (logmsg_path && unlink(logmsg_path) == -1 && error == NULL)
+		error = got_error_from_errno2("unlink", logmsg_path);
+	free(logmsg);
+	free(logmsg_path);
+	free(repo_path);
+	free(editor);
+	free(new_commit_id);
+	free(id_str);
+	free(author);
+	free(gitconfig_path);
+	if (branch_ref)
+		got_ref_close(branch_ref);
+	if (head_ref)
+		got_ref_close(head_ref);
+	return error;
+}
+
+__dead static void
+usage_clone(void)
+{
+	fprintf(stderr, "usage: %s clone [-almqv] [-b branch] [-R reference] "
+	    "repository-URL [directory]\n", getprogname());
+	exit(1);
+}
+
+struct got_fetch_progress_arg {
+	char last_scaled_size[FMT_SCALED_STRSIZE];
+	int last_p_indexed;
+	int last_p_resolved;
+	int verbosity;
+
+	struct got_repository *repo;
+
+	int create_configs;
+	int configs_created;
+	struct {
+		struct got_pathlist_head *symrefs;
+		struct got_pathlist_head *wanted_branches;
+		struct got_pathlist_head *wanted_refs;
+		const char *proto;
+		const char *host;
+		const char *port;
+		const char *remote_repo_path;
+		const char *git_url;
+		int fetch_all_branches;
+		int mirror_references;
+	} config_info;
+};
+
+/* XXX forward declaration */
+static const struct got_error *
+create_config_files(const char *proto, const char *host, const char *port,
+    const char *remote_repo_path, const char *git_url, int fetch_all_branches,
+    int mirror_references, struct got_pathlist_head *symrefs,
+    struct got_pathlist_head *wanted_branches,
+    struct got_pathlist_head *wanted_refs, struct got_repository *repo);
+
+static const struct got_error *
+fetch_progress(void *arg, const char *message, off_t packfile_size,
+    int nobj_total, int nobj_indexed, int nobj_loose, int nobj_resolved)
+{
+	const struct got_error *err = NULL;
+	struct got_fetch_progress_arg *a = arg;
+	char scaled_size[FMT_SCALED_STRSIZE];
+	int p_indexed, p_resolved;
+	int print_size = 0, print_indexed = 0, print_resolved = 0;
+
+	/*
+	 * In order to allow a failed clone to be resumed with 'got fetch'
+	 * we try to create configuration files as soon as possible.
+	 * Once the server has sent information about its default branch
+	 * we have all required information.
+	 */
+	if (a->create_configs && !a->configs_created &&
+	    !TAILQ_EMPTY(a->config_info.symrefs)) {
+		err = create_config_files(a->config_info.proto,
+		    a->config_info.host, a->config_info.port,
+		    a->config_info.remote_repo_path,
+		    a->config_info.git_url,
+		    a->config_info.fetch_all_branches,
+		    a->config_info.mirror_references,
+		    a->config_info.symrefs,
+		    a->config_info.wanted_branches,
+		    a->config_info.wanted_refs, a->repo);
+		if (err)
+			return err;
+		a->configs_created = 1;
+	}
+
+	if (a->verbosity < 0)
+		return NULL;
+
+	if (message && message[0] != '\0') {
+		printf("\rserver: %s", message);
+		fflush(stdout);
+		return NULL;
+	}
+
+	if (packfile_size > 0 || nobj_indexed > 0) {
+		if (fmt_scaled(packfile_size, scaled_size) == 0 &&
+		    (a->last_scaled_size[0] == '\0' ||
+		    strcmp(scaled_size, a->last_scaled_size)) != 0) {
+			print_size = 1;
+			if (strlcpy(a->last_scaled_size, scaled_size,
+			    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
+				return got_error(GOT_ERR_NO_SPACE);
+		}
+		if (nobj_indexed > 0) {
+			p_indexed = (nobj_indexed * 100) / nobj_total;
+			if (p_indexed != a->last_p_indexed) {
+				a->last_p_indexed = p_indexed;
+				print_indexed = 1;
+				print_size = 1;
+			}
+		}
+		if (nobj_resolved > 0) {
+			p_resolved = (nobj_resolved * 100) /
+			    (nobj_total - nobj_loose);
+			if (p_resolved != a->last_p_resolved) {
+				a->last_p_resolved = p_resolved;
+				print_resolved = 1;
+				print_indexed = 1;
+				print_size = 1;
+			}
+		}
+
+	}
+	if (print_size || print_indexed || print_resolved)
+		printf("\r");
+	if (print_size)
+		printf("%*s fetched", FMT_SCALED_STRSIZE - 2, scaled_size);
+	if (print_indexed)
+		printf("; indexing %d%%", p_indexed);
+	if (print_resolved)
+		printf("; resolving deltas %d%%", p_resolved);
+	if (print_size || print_indexed || print_resolved)
+		fflush(stdout);
+
+	return NULL;
+}
+
+static const struct got_error *
+create_symref(const char *refname, struct got_reference *target_ref,
+    int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_reference *head_symref;
+
+	err = got_ref_alloc_symref(&head_symref, refname, target_ref);
+	if (err)
+		return err;
+
+	err = got_ref_write(head_symref, repo);
+	if (err == NULL && verbosity > 0) {
+		printf("Created reference %s: %s\n", GOT_REF_HEAD,
+		    got_ref_get_name(target_ref));
+	}
+	got_ref_close(head_symref);
+	return err;
+}
+
+static const struct got_error *
+list_remote_refs(struct got_pathlist_head *symrefs,
+    struct got_pathlist_head *refs)
+{
+	const struct got_error *err;
+	struct got_pathlist_entry *pe;
+
+	TAILQ_FOREACH(pe, symrefs, entry) {
+		const char *refname = pe->path;
+		const char *targetref = pe->data;
+
+		printf("%s: %s\n", refname, targetref);
+	}
+
+	TAILQ_FOREACH(pe, refs, entry) {
+		const char *refname = pe->path;
+		struct got_object_id *id = pe->data;
+		char *id_str;
+
+		err = got_object_id_str(&id_str, id);
+		if (err)
+			return err;
+		printf("%s: %s\n", refname, id_str);
+		free(id_str);
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+create_ref(const char *refname, struct got_object_id *id,
+    int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_reference *ref;
+	char *id_str;
+
+	err = got_object_id_str(&id_str, id);
+	if (err)
+		return err;
+
+	err = got_ref_alloc(&ref, refname, id);
+	if (err)
+		goto done;
+
+	err = got_ref_write(ref, repo);
+	got_ref_close(ref);
+
+	if (err == NULL && verbosity >= 0)
+		printf("Created reference %s: %s\n", refname, id_str);
+done:
+	free(id_str);
+	return err;
+}
+
+static int
+match_wanted_ref(const char *refname, const char *wanted_ref)
+{
+	if (strncmp(refname, "refs/", 5) != 0)
+		return 0;
+	refname += 5;
+
+	/*
+	 * Prevent fetching of references that won't make any
+	 * sense outside of the remote repository's context.
+	 */
+	if (strncmp(refname, "got/", 4) == 0)
+		return 0;
+	if (strncmp(refname, "remotes/", 8) == 0)
+		return 0;
+
+	if (strncmp(wanted_ref, "refs/", 5) == 0)
+		wanted_ref += 5;
+
+	/* Allow prefix match. */
+	if (got_path_is_child(refname, wanted_ref, strlen(wanted_ref)))
+		return 1;
+
+	/* Allow exact match. */
+	return (strcmp(refname, wanted_ref) == 0);
+}
+
+static int
+is_wanted_ref(struct got_pathlist_head *wanted_refs, const char *refname)
+{
+	struct got_pathlist_entry *pe;
+
+	TAILQ_FOREACH(pe, wanted_refs, entry) {
+		if (match_wanted_ref(refname, pe->path))
+			return 1;
+	}
+
+	return 0;
+}
+
+static const struct got_error *
+create_wanted_ref(const char *refname, struct got_object_id *id,
+    const char *remote_repo_name, int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err;
+	char *remote_refname;
+
+	if (strncmp("refs/", refname, 5) == 0)
+		refname += 5;
+
+	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
+	    remote_repo_name, refname) == -1)
+		return got_error_from_errno("asprintf");
+
+	err = create_ref(remote_refname, id, verbosity, repo);
+	free(remote_refname);
+	return err;
+}
+
+static const struct got_error *
+create_gotconfig(const char *proto, const char *host, const char *port,
+    const char *remote_repo_path, const char *default_branch,
+    int fetch_all_branches, struct got_pathlist_head *wanted_branches,
+    struct got_pathlist_head *wanted_refs, int mirror_references,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *gotconfig_path = NULL;
+	char *gotconfig = NULL;
+	FILE *gotconfig_file = NULL;
+	const char *branchname = NULL;
+	char *branches = NULL, *refs = NULL;
+	ssize_t n;
+
+	if (!fetch_all_branches && !TAILQ_EMPTY(wanted_branches)) {
+		struct got_pathlist_entry *pe;
+		TAILQ_FOREACH(pe, wanted_branches, entry) {
+			char *s;
+			branchname = pe->path;
+			if (strncmp(branchname, "refs/heads/", 11) == 0)
+				branchname += 11;
+			if (asprintf(&s, "%s\"%s\" ",
+			    branches ? branches : "", branchname) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+			free(branches);
+			branches = s;
+		}
+	} else if (!fetch_all_branches && default_branch) {
+		branchname = default_branch;
+		if (strncmp(branchname, "refs/heads/", 11) == 0)
+			branchname += 11;
+		if (asprintf(&branches, "\"%s\" ", branchname) == -1) {
+			err = got_error_from_errno("asprintf");
+			goto done;
+		}
+	}
+	if (!TAILQ_EMPTY(wanted_refs)) {
+		struct got_pathlist_entry *pe;
+		TAILQ_FOREACH(pe, wanted_refs, entry) {
+			char *s;
+			const char *refname = pe->path;
+			if (strncmp(refname, "refs/", 5) == 0)
+				branchname += 5;
+			if (asprintf(&s, "%s\"%s\" ",
+			    refs ? refs : "", refname) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+			free(refs);
+			refs = s;
+		}
+	}
+
+	/* Create got.conf(5). */
+	gotconfig_path = got_repo_get_path_gotconfig(repo);
+	if (gotconfig_path == NULL) {
+		err = got_error_from_errno("got_repo_get_path_gotconfig");
+		goto done;
+	}
+	gotconfig_file = fopen(gotconfig_path, "ae");
+	if (gotconfig_file == NULL) {
+		err = got_error_from_errno2("fopen", gotconfig_path);
+		goto done;
+	}
+	if (asprintf(&gotconfig,
+	    "remote \"%s\" {\n"
+	    "\tserver %s\n"
+	    "\tprotocol %s\n"
+	    "%s%s%s"
+	    "\trepository \"%s\"\n"
+	    "%s%s%s"
+	    "%s%s%s"
+	    "%s"
+	    "%s"
+	    "}\n",
+	    GOT_FETCH_DEFAULT_REMOTE_NAME, host, proto,
+	    port ? "\tport " : "", port ? port : "", port ? "\n" : "",
+	    remote_repo_path, branches ? "\tbranch { " : "",
+	    branches ? branches : "", branches ? "}\n" : "",
+	    refs ? "\treference { " : "", refs ? refs : "", refs ? "}\n" : "",
+	    mirror_references ? "\tmirror_references yes\n" : "",
+	    fetch_all_branches ? "\tfetch_all_branches yes\n" : "") == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+	n = fwrite(gotconfig, 1, strlen(gotconfig), gotconfig_file);
+	if (n != strlen(gotconfig)) {
+		err = got_ferror(gotconfig_file, GOT_ERR_IO);
+		goto done;
+	}
+
+done:
+	if (gotconfig_file && fclose(gotconfig_file) == EOF && err == NULL)
+		err = got_error_from_errno2("fclose", gotconfig_path);
+	free(gotconfig_path);
+	free(branches);
+	return err;
+}
+
+static const struct got_error *
+create_gitconfig(const char *git_url, const char *default_branch,
+    int fetch_all_branches, struct got_pathlist_head *wanted_branches,
+    struct got_pathlist_head *wanted_refs, int mirror_references,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *gitconfig_path = NULL;
+	char *gitconfig = NULL;
+	FILE *gitconfig_file = NULL;
+	char *branches = NULL, *refs = NULL;
+	const char *branchname;
+	ssize_t n;
+
+	/* Create a config file Git can understand. */
+	gitconfig_path = got_repo_get_path_gitconfig(repo);
+	if (gitconfig_path == NULL) {
+		err = got_error_from_errno("got_repo_get_path_gitconfig");
+		goto done;
+	}
+	gitconfig_file = fopen(gitconfig_path, "ae");
+	if (gitconfig_file == NULL) {
+		err = got_error_from_errno2("fopen", gitconfig_path);
+		goto done;
+	}
+	if (fetch_all_branches) {
+		if (mirror_references) {
+			if (asprintf(&branches,
+			    "\tfetch = refs/heads/*:refs/heads/*\n") == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+		} else if (asprintf(&branches,
+		    "\tfetch = refs/heads/*:refs/remotes/%s/*\n",
+		    GOT_FETCH_DEFAULT_REMOTE_NAME) == -1) {
+			err = got_error_from_errno("asprintf");
+			goto done;
+		}
+	} else if (!TAILQ_EMPTY(wanted_branches)) {
+		struct got_pathlist_entry *pe;
+		TAILQ_FOREACH(pe, wanted_branches, entry) {
+			char *s;
+			branchname = pe->path;
+			if (strncmp(branchname, "refs/heads/", 11) == 0)
+				branchname += 11;
+			if (mirror_references) {
+				if (asprintf(&s,
+				    "%s\tfetch = refs/heads/%s:refs/heads/%s\n",
+				    branches ? branches : "",
+				    branchname, branchname) == -1) {
+					err = got_error_from_errno("asprintf");
+					goto done;
+				}
+			} else if (asprintf(&s,
+			    "%s\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
+			    branches ? branches : "",
+			    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
+			    branchname) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+			free(branches);
+			branches = s;
+		}
+	} else {
+		/*
+		 * If the server specified a default branch, use just that one.
+		 * Otherwise fall back to fetching all branches on next fetch.
+		 */
+		if (default_branch) {
+			branchname = default_branch;
+			if (strncmp(branchname, "refs/heads/", 11) == 0)
+				branchname += 11;
+		} else
+			branchname = "*"; /* fall back to all branches */
+		if (mirror_references) {
+			if (asprintf(&branches,
+			    "\tfetch = refs/heads/%s:refs/heads/%s\n",
+			    branchname, branchname) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+		} else if (asprintf(&branches,
+		    "\tfetch = refs/heads/%s:refs/remotes/%s/%s\n",
+		    branchname, GOT_FETCH_DEFAULT_REMOTE_NAME,
+		    branchname) == -1) {
+			err = got_error_from_errno("asprintf");
+			goto done;
+		}
+	}
+	if (!TAILQ_EMPTY(wanted_refs)) {
+		struct got_pathlist_entry *pe;
+		TAILQ_FOREACH(pe, wanted_refs, entry) {
+			char *s;
+			const char *refname = pe->path;
+			if (strncmp(refname, "refs/", 5) == 0)
+				refname += 5;
+			if (mirror_references) {
+				if (asprintf(&s,
+				    "%s\tfetch = refs/%s:refs/%s\n",
+				    refs ? refs : "", refname, refname) == -1) {
+					err = got_error_from_errno("asprintf");
+					goto done;
+				}
+			} else if (asprintf(&s,
+			    "%s\tfetch = refs/%s:refs/remotes/%s/%s\n",
+			    refs ? refs : "",
+			    refname, GOT_FETCH_DEFAULT_REMOTE_NAME,
+			    refname) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+			free(refs);
+			refs = s;
+		}
+	}
+
+	if (asprintf(&gitconfig,
+	    "[remote \"%s\"]\n"
+	    "\turl = %s\n"
+	    "%s"
+	    "%s"
+	    "\tfetch = refs/tags/*:refs/tags/*\n",
+	    GOT_FETCH_DEFAULT_REMOTE_NAME, git_url, branches ? branches : "",
+	    refs ? refs : "") == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+	n = fwrite(gitconfig, 1, strlen(gitconfig), gitconfig_file);
+	if (n != strlen(gitconfig)) {
+		err = got_ferror(gitconfig_file, GOT_ERR_IO);
+		goto done;
+	}
+done:
+	if (gitconfig_file && fclose(gitconfig_file) == EOF && err == NULL)
+		err = got_error_from_errno2("fclose", gitconfig_path);
+	free(gitconfig_path);
+	free(branches);
+	return err;
+}
+
+static const struct got_error *
+create_config_files(const char *proto, const char *host, const char *port,
+    const char *remote_repo_path, const char *git_url, int fetch_all_branches,
+    int mirror_references, struct got_pathlist_head *symrefs,
+    struct got_pathlist_head *wanted_branches,
+    struct got_pathlist_head *wanted_refs, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	const char *default_branch = NULL;
+	struct got_pathlist_entry *pe;
+
+	/*
+	 * If we asked for a set of wanted branches then use the first
+	 * one of those.
+	 */
+	if (!TAILQ_EMPTY(wanted_branches)) {
+		pe = TAILQ_FIRST(wanted_branches);
+		default_branch = pe->path;
+	} else {
+		/* First HEAD ref listed by server is the default branch. */
+		TAILQ_FOREACH(pe, symrefs, entry) {
+			const char *refname = pe->path;
+			const char *target = pe->data;
+
+			if (strcmp(refname, GOT_REF_HEAD) != 0)
+				continue;
+
+			default_branch = target;
+			break;
+		}
+	}
+
+	/* Create got.conf(5). */
+	err = create_gotconfig(proto, host, port, remote_repo_path,
+	    default_branch, fetch_all_branches, wanted_branches,
+	    wanted_refs, mirror_references, repo);
+	if (err)
+		return err;
+
+	/* Create a config file Git can understand. */
+	return create_gitconfig(git_url, default_branch, fetch_all_branches,
+	    wanted_branches, wanted_refs, mirror_references, repo);
+}
+
+static const struct got_error *
+cmd_clone(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	const char *uri, *dirname;
+	char *proto, *host, *port, *repo_name, *server_path;
+	char *default_destdir = NULL, *id_str = NULL;
+	const char *repo_path;
+	struct got_repository *repo = NULL;
+	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
+	struct got_pathlist_entry *pe;
+	struct got_object_id *pack_hash = NULL;
+	int ch, fetchfd = -1, fetchstatus;
+	pid_t fetchpid = -1;
+	struct got_fetch_progress_arg fpa;
+	char *git_url = NULL;
+	int verbosity = 0, fetch_all_branches = 0, mirror_references = 0;
+	int bflag = 0, list_refs_only = 0;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&symrefs);
+	TAILQ_INIT(&wanted_branches);
+	TAILQ_INIT(&wanted_refs);
+
+	while ((ch = getopt(argc, argv, "ab:lmqR:v")) != -1) {
+		switch (ch) {
+		case 'a':
+			fetch_all_branches = 1;
+			break;
+		case 'b':
+			error = got_pathlist_append(&wanted_branches,
+			    optarg, NULL);
+			if (error)
+				return error;
+			bflag = 1;
+			break;
+		case 'l':
+			list_refs_only = 1;
+			break;
+		case 'm':
+			mirror_references = 1;
+			break;
+		case 'q':
+			verbosity = -1;
+			break;
+		case 'R':
+			error = got_pathlist_append(&wanted_refs,
+			    optarg, NULL);
+			if (error)
+				return error;
+			break;
+		case 'v':
+			if (verbosity < 0)
+				verbosity = 0;
+			else if (verbosity < 3)
+				verbosity++;
+			break;
+		default:
+			usage_clone();
+			break;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
+		option_conflict('a', 'b');
+	if (list_refs_only) {
+		if (!TAILQ_EMPTY(&wanted_branches))
+			option_conflict('l', 'b');
+		if (fetch_all_branches)
+			option_conflict('l', 'a');
+		if (mirror_references)
+			option_conflict('l', 'm');
+		if (!TAILQ_EMPTY(&wanted_refs))
+			option_conflict('l', 'R');
+	}
+
+	uri = argv[0];
+
+	if (argc == 1)
+		dirname = NULL;
+	else if (argc == 2)
+		dirname = argv[1];
+	else
+		usage_clone();
+
+	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
+	    &repo_name, uri);
+	if (error)
+		goto done;
+
+	if (asprintf(&git_url, "%s://%s%s%s%s%s", proto,
+	    host, port ? ":" : "", port ? port : "",
+	    server_path[0] != '/' ? "/" : "", server_path) == -1) {
+		error = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	if (strcmp(proto, "git") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd dns inet unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "git+ssh") == 0 ||
+	    strcmp(proto, "ssh") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "http") == 0 ||
+	    strcmp(proto, "git+http") == 0) {
+		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
+		goto done;
+	} else {
+		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
+		goto done;
+	}
+	if (dirname == NULL) {
+		if (asprintf(&default_destdir, "%s.git", repo_name) == -1) {
+			error = got_error_from_errno("asprintf");
+			goto done;
+		}
+		repo_path = default_destdir;
+	} else
+		repo_path = dirname;
+
+	if (!list_refs_only) {
+		error = got_path_mkdir(repo_path);
+		if (error &&
+		    (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
+		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST)))
+			goto done;
+		if (!got_path_dir_is_empty(repo_path)) {
+			error = got_error_path(repo_path,
+			    GOT_ERR_DIR_NOT_EMPTY);
+			goto done;
+		}
+	}
+
+	error = got_dial_apply_unveil(proto);
+	if (error)
+		goto done;
+
+	error = apply_unveil(repo_path, 0, NULL);
+	if (error)
+		goto done;
+
+	if (verbosity >= 0)
+		printf("Connecting to %s\n", git_url);
+
+	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
+	    server_path, verbosity);
+	if (error)
+		goto done;
+
+	if (!list_refs_only) {
+		error = got_repo_init(repo_path, NULL);
+		if (error)
+			goto done;
+		error = got_repo_pack_fds_open(&pack_fds);
+		if (error != NULL)
+			goto done;
+		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+		if (error)
+			goto done;
+	}
+
+	fpa.last_scaled_size[0] = '\0';
+	fpa.last_p_indexed = -1;
+	fpa.last_p_resolved = -1;
+	fpa.verbosity = verbosity;
+	fpa.create_configs = 1;
+	fpa.configs_created = 0;
+	fpa.repo = repo;
+	fpa.config_info.symrefs = &symrefs;
+	fpa.config_info.wanted_branches = &wanted_branches;
+	fpa.config_info.wanted_refs = &wanted_refs;
+	fpa.config_info.proto = proto;
+	fpa.config_info.host = host;
+	fpa.config_info.port = port;
+	fpa.config_info.remote_repo_path = server_path;
+	fpa.config_info.git_url = git_url;
+	fpa.config_info.fetch_all_branches = fetch_all_branches;
+	fpa.config_info.mirror_references = mirror_references;
+	error = got_fetch_pack(&pack_hash, &refs, &symrefs,
+	    GOT_FETCH_DEFAULT_REMOTE_NAME, mirror_references,
+	    fetch_all_branches, &wanted_branches, &wanted_refs,
+	    list_refs_only, verbosity, fetchfd, repo, NULL, NULL, bflag,
+	    fetch_progress, &fpa);
+	if (error)
+		goto done;
+
+	if (list_refs_only) {
+		error = list_remote_refs(&symrefs, &refs);
+		goto done;
+	}
+
+	if (pack_hash == NULL) {
+		error = got_error_fmt(GOT_ERR_FETCH_FAILED, "%s",
+		    "server sent an empty pack file");
+		goto done;
+	}
+	error = got_object_id_str(&id_str, pack_hash);
+	if (error)
+		goto done;
+	if (verbosity >= 0)
+		printf("\nFetched %s.pack\n", id_str);
+	free(id_str);
+
+	/* Set up references provided with the pack file. */
+	TAILQ_FOREACH(pe, &refs, entry) {
+		const char *refname = pe->path;
+		struct got_object_id *id = pe->data;
+		char *remote_refname;
+
+		if (is_wanted_ref(&wanted_refs, refname) &&
+		    !mirror_references) {
+			error = create_wanted_ref(refname, id,
+			    GOT_FETCH_DEFAULT_REMOTE_NAME,
+			    verbosity - 1, repo);
+			if (error)
+				goto done;
+			continue;
+		}
+
+		error = create_ref(refname, id, verbosity - 1, repo);
+		if (error)
+			goto done;
+
+		if (mirror_references)
+			continue;
+
+		if (strncmp("refs/heads/", refname, 11) != 0)
+			continue;
+
+		if (asprintf(&remote_refname,
+		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
+		    refname + 11) == -1) {
+			error = got_error_from_errno("asprintf");
+			goto done;
+		}
+		error = create_ref(remote_refname, id, verbosity - 1, repo);
+		free(remote_refname);
+		if (error)
+			goto done;
+	}
+
+	/* Set the HEAD reference if the server provided one. */
+	TAILQ_FOREACH(pe, &symrefs, entry) {
+		struct got_reference *target_ref;
+		const char *refname = pe->path;
+		const char *target = pe->data;
+		char *remote_refname = NULL, *remote_target = NULL;
+
+		if (strcmp(refname, GOT_REF_HEAD) != 0)
+			continue;
+
+		error = got_ref_open(&target_ref, repo, target, 0);
+		if (error) {
+			if (error->code == GOT_ERR_NOT_REF) {
+				error = NULL;
+				continue;
+			}
+			goto done;
+		}
+
+		error = create_symref(refname, target_ref, verbosity, repo);
+		got_ref_close(target_ref);
+		if (error)
+			goto done;
+
+		if (mirror_references)
+			continue;
+
+		if (strncmp("refs/heads/", target, 11) != 0)
+			continue;
+
+		if (asprintf(&remote_refname,
+		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
+		    refname) == -1) {
+			error = got_error_from_errno("asprintf");
+			goto done;
+		}
+		if (asprintf(&remote_target,
+		    "refs/remotes/%s/%s", GOT_FETCH_DEFAULT_REMOTE_NAME,
+		    target + 11) == -1) {
+			error = got_error_from_errno("asprintf");
+			free(remote_refname);
+			goto done;
+		}
+		error = got_ref_open(&target_ref, repo, remote_target, 0);
+		if (error) {
+			free(remote_refname);
+			free(remote_target);
+			if (error->code == GOT_ERR_NOT_REF) {
+				error = NULL;
+				continue;
+			}
+			goto done;
+		}
+		error = create_symref(remote_refname, target_ref,
+		    verbosity - 1, repo);
+		free(remote_refname);
+		free(remote_target);
+		got_ref_close(target_ref);
+		if (error)
+			goto done;
+	}
+	if (pe == NULL) {
+		/*
+		 * We failed to set the HEAD reference. If we asked for
+		 * a set of wanted branches use the first of one of those
+		 * which could be fetched instead.
+		 */
+		TAILQ_FOREACH(pe, &wanted_branches, entry) {
+			const char *target = pe->path;
+			struct got_reference *target_ref;
+
+			error = got_ref_open(&target_ref, repo, target, 0);
+			if (error) {
+				if (error->code == GOT_ERR_NOT_REF) {
+					error = NULL;
+					continue;
+				}
+				goto done;
+			}
+
+			error = create_symref(GOT_REF_HEAD, target_ref,
+			    verbosity, repo);
+			got_ref_close(target_ref);
+			if (error)
+				goto done;
+			break;
+		}
+
+		if (!fpa.configs_created && pe != NULL) {
+			error = create_config_files(fpa.config_info.proto,
+			    fpa.config_info.host, fpa.config_info.port,
+			    fpa.config_info.remote_repo_path,
+			    fpa.config_info.git_url,
+			    fpa.config_info.fetch_all_branches,
+			    fpa.config_info.mirror_references,
+			    fpa.config_info.symrefs,
+			    fpa.config_info.wanted_branches,
+			    fpa.config_info.wanted_refs, fpa.repo);
+			if (error)
+				goto done;
+		}
+	}
+
+	if (verbosity >= 0)
+		printf("Created %s repository '%s'\n",
+		    mirror_references ? "mirrored" : "cloned", repo_path);
+done:
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (fetchpid > 0) {
+		if (kill(fetchpid, SIGTERM) == -1)
+			error = got_error_from_errno("kill");
+		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
+			error = got_error_from_errno("waitpid");
+	}
+	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
+	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
+	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
+	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
+	free(pack_hash);
+	free(proto);
+	free(host);
+	free(port);
+	free(server_path);
+	free(repo_name);
+	free(default_destdir);
+	free(git_url);
+	return error;
+}
+
+static const struct got_error *
+update_ref(struct got_reference *ref, struct got_object_id *new_id,
+    int replace_tags, int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *new_id_str = NULL;
+	struct got_object_id *old_id = NULL;
+
+	err = got_object_id_str(&new_id_str, new_id);
+	if (err)
+		goto done;
+
+	if (!replace_tags &&
+	    strncmp(got_ref_get_name(ref), "refs/tags/", 10) == 0) {
+		err = got_ref_resolve(&old_id, repo, ref);
+		if (err)
+			goto done;
+		if (got_object_id_cmp(old_id, new_id) == 0)
+			goto done;
+		if (verbosity >= 0) {
+			printf("Rejecting update of existing tag %s: %s\n",
+			    got_ref_get_name(ref), new_id_str);
+		}
+		goto done;
+	}
+
+	if (got_ref_is_symbolic(ref)) {
+		if (verbosity >= 0) {
+			printf("Replacing reference %s: %s\n",
+			    got_ref_get_name(ref),
+			    got_ref_get_symref_target(ref));
+		}
+		err = got_ref_change_symref_to_ref(ref, new_id);
+		if (err)
+			goto done;
+		err = got_ref_write(ref, repo);
+		if (err)
+			goto done;
+	} else {
+		err = got_ref_resolve(&old_id, repo, ref);
+		if (err)
+			goto done;
+		if (got_object_id_cmp(old_id, new_id) == 0)
+			goto done;
+
+		err = got_ref_change_ref(ref, new_id);
+		if (err)
+			goto done;
+		err = got_ref_write(ref, repo);
+		if (err)
+			goto done;
+	}
+
+	if (verbosity >= 0)
+		printf("Updated %s: %s\n", got_ref_get_name(ref),
+		    new_id_str);
+done:
+	free(old_id);
+	free(new_id_str);
+	return err;
+}
+
+static const struct got_error *
+update_symref(const char *refname, struct got_reference *target_ref,
+    int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err = NULL, *unlock_err;
+	struct got_reference *symref;
+	int symref_is_locked = 0;
+
+	err = got_ref_open(&symref, repo, refname, 1);
+	if (err) {
+		if (err->code != GOT_ERR_NOT_REF)
+			return err;
+		err = got_ref_alloc_symref(&symref, refname, target_ref);
+		if (err)
+			goto done;
+
+		err = got_ref_write(symref, repo);
+		if (err)
+			goto done;
+
+		if (verbosity >= 0)
+			printf("Created reference %s: %s\n",
+			    got_ref_get_name(symref),
+			    got_ref_get_symref_target(symref));
+	} else {
+		symref_is_locked = 1;
+
+		if (strcmp(got_ref_get_symref_target(symref),
+		    got_ref_get_name(target_ref)) == 0)
+			goto done;
+
+		err = got_ref_change_symref(symref,
+		    got_ref_get_name(target_ref));
+		if (err)
+			goto done;
+
+		err = got_ref_write(symref, repo);
+		if (err)
+			goto done;
+
+		if (verbosity >= 0)
+			printf("Updated %s: %s\n", got_ref_get_name(symref),
+			    got_ref_get_symref_target(symref));
+
+	}
+done:
+	if (symref_is_locked) {
+		unlock_err = got_ref_unlock(symref);
+		if (unlock_err && err == NULL)
+			err = unlock_err;
+	}
+	got_ref_close(symref);
+	return err;
+}
+
+__dead static void
+usage_fetch(void)
+{
+	fprintf(stderr, "usage: %s fetch [-adlqtvX] [-b branch] "
+	    "[-R reference] [-r repository-path] [remote-repository]\n",
+	    getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+delete_missing_ref(struct got_reference *ref,
+    int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *id = NULL;
+	char *id_str = NULL;
+
+	if (got_ref_is_symbolic(ref)) {
+		err = got_ref_delete(ref, repo);
+		if (err)
+			return err;
+		if (verbosity >= 0) {
+			printf("Deleted %s: %s\n",
+			    got_ref_get_name(ref),
+			    got_ref_get_symref_target(ref));
+		}
+	} else {
+		err = got_ref_resolve(&id, repo, ref);
+		if (err)
+			return err;
+		err = got_object_id_str(&id_str, id);
+		if (err)
+			goto done;
+
+		err = got_ref_delete(ref, repo);
+		if (err)
+			goto done;
+		if (verbosity >= 0) {
+			printf("Deleted %s: %s\n",
+			    got_ref_get_name(ref), id_str);
+		}
+	}
+done:
+	free(id);
+	free(id_str);
+	return err;
+}
+
+static const struct got_error *
+delete_missing_refs(struct got_pathlist_head *their_refs,
+    struct got_pathlist_head *their_symrefs,
+    const struct got_remote_repo *remote,
+    int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err = NULL, *unlock_err;
+	struct got_reflist_head my_refs;
+	struct got_reflist_entry *re;
+	struct got_pathlist_entry *pe;
+	char *remote_namespace = NULL;
+	char *local_refname = NULL;
+
+	TAILQ_INIT(&my_refs);
+
+	if (asprintf(&remote_namespace, "refs/remotes/%s/", remote->name)
+	    == -1)
+		return got_error_from_errno("asprintf");
+
+	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &my_refs, entry) {
+		const char *refname = got_ref_get_name(re->ref);
+		const char *their_refname;
+
+		if (remote->mirror_references) {
+			their_refname = refname;
+		} else {
+			if (strncmp(refname, remote_namespace,
+			    strlen(remote_namespace)) == 0) {
+				if (strcmp(refname + strlen(remote_namespace),
+				    GOT_REF_HEAD) == 0)
+					continue;
+				if (asprintf(&local_refname, "refs/heads/%s",
+				    refname + strlen(remote_namespace)) == -1) {
+					err = got_error_from_errno("asprintf");
+					goto done;
+				}
+			} else if (strncmp(refname, "refs/tags/", 10) != 0)
+				continue;
+
+			their_refname = local_refname;
+		}
+
+		TAILQ_FOREACH(pe, their_refs, entry) {
+			if (strcmp(their_refname, pe->path) == 0)
+				break;
+		}
+		if (pe != NULL)
+			continue;
+
+		TAILQ_FOREACH(pe, their_symrefs, entry) {
+			if (strcmp(their_refname, pe->path) == 0)
+				break;
+		}
+		if (pe != NULL)
+			continue;
+
+		err = delete_missing_ref(re->ref, verbosity, repo);
+		if (err)
+			break;
+
+		if (local_refname) {
+			struct got_reference *ref;
+			err = got_ref_open(&ref, repo, local_refname, 1);
+			if (err) {
+				if (err->code != GOT_ERR_NOT_REF)
+					break;
+				free(local_refname);
+				local_refname = NULL;
+				continue;
+			}
+			err = delete_missing_ref(ref, verbosity, repo);
+			if (err)
+				break;
+			unlock_err = got_ref_unlock(ref);
+			got_ref_close(ref);
+			if (unlock_err && err == NULL) {
+				err = unlock_err;
+				break;
+			}
+
+			free(local_refname);
+			local_refname = NULL;
+		}
+	}
+done:
+	got_ref_list_free(&my_refs);
+	free(remote_namespace);
+	free(local_refname);
+	return err;
+}
+
+static const struct got_error *
+update_wanted_ref(const char *refname, struct got_object_id *id,
+    const char *remote_repo_name, int verbosity, struct got_repository *repo)
+{
+	const struct got_error *err, *unlock_err;
+	char *remote_refname;
+	struct got_reference *ref;
+
+	if (strncmp("refs/", refname, 5) == 0)
+		refname += 5;
+
+	if (asprintf(&remote_refname, "refs/remotes/%s/%s",
+	    remote_repo_name, refname) == -1)
+		return got_error_from_errno("asprintf");
+
+	err = got_ref_open(&ref, repo, remote_refname, 1);
+	if (err) {
+		if (err->code != GOT_ERR_NOT_REF)
+			goto done;
+		err = create_ref(remote_refname, id, verbosity, repo);
+	} else {
+		err = update_ref(ref, id, 0, verbosity, repo);
+		unlock_err = got_ref_unlock(ref);
+		if (unlock_err && err == NULL)
+			err = unlock_err;
+		got_ref_close(ref);
+	}
+done:
+	free(remote_refname);
+	return err;
+}
+
+static const struct got_error *
+delete_ref(struct got_repository *repo, struct got_reference *ref)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *id = NULL;
+	char *id_str = NULL;
+	const char *target;
+
+	if (got_ref_is_symbolic(ref)) {
+		target = got_ref_get_symref_target(ref);
+	} else {
+		err = got_ref_resolve(&id, repo, ref);
+		if (err)
+			goto done;
+		err = got_object_id_str(&id_str, id);
+		if (err)
+			goto done;
+		target = id_str;
+	}
+
+	err = got_ref_delete(ref, repo);
+	if (err)
+		goto done;
+
+	printf("Deleted %s: %s\n", got_ref_get_name(ref), target);
+done:
+	free(id);
+	free(id_str);
+	return err;
+}
+
+static const struct got_error *
+delete_refs_for_remote(struct got_repository *repo, const char *remote_name)
+{
+	const struct got_error *err = NULL;
+	struct got_reflist_head refs;
+	struct got_reflist_entry *re;
+	char *prefix;
+
+	TAILQ_INIT(&refs);
+
+	if (asprintf(&prefix, "refs/remotes/%s", remote_name) == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+	err = got_ref_list(&refs, repo, prefix, got_ref_cmp_by_name, NULL);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &refs, entry)
+		delete_ref(repo, re->ref);
+done:
+	got_ref_list_free(&refs);
+	return err;
+}
+
+static const struct got_error *
+cmd_fetch(int argc, char *argv[])
+{
+	const struct got_error *error = NULL, *unlock_err;
+	char *cwd = NULL, *repo_path = NULL;
+	const char *remote_name;
+	char *proto = NULL, *host = NULL, *port = NULL;
+	char *repo_name = NULL, *server_path = NULL;
+	const struct got_remote_repo *remotes, *remote = NULL;
+	int nremotes;
+	char *id_str = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
+	struct got_pathlist_head refs, symrefs, wanted_branches, wanted_refs;
+	struct got_pathlist_entry *pe;
+	struct got_reflist_head remote_refs;
+	struct got_reflist_entry *re;
+	struct got_object_id *pack_hash = NULL;
+	int i, ch, fetchfd = -1, fetchstatus;
+	pid_t fetchpid = -1;
+	struct got_fetch_progress_arg fpa;
+	int verbosity = 0, fetch_all_branches = 0, list_refs_only = 0;
+	int delete_refs = 0, replace_tags = 0, delete_remote = 0;
+	int *pack_fds = NULL, have_bflag = 0;
+	const char *remote_head = NULL, *worktree_branch = NULL;
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&symrefs);
+	TAILQ_INIT(&remote_refs);
+	TAILQ_INIT(&wanted_branches);
+	TAILQ_INIT(&wanted_refs);
+
+	while ((ch = getopt(argc, argv, "ab:dlqR:r:tvX")) != -1) {
+		switch (ch) {
+		case 'a':
+			fetch_all_branches = 1;
+			break;
+		case 'b':
+			error = got_pathlist_append(&wanted_branches,
+			    optarg, NULL);
+			if (error)
+				return error;
+			have_bflag = 1;
+			break;
+		case 'd':
+			delete_refs = 1;
+			break;
+		case 'l':
+			list_refs_only = 1;
+			break;
+		case 'q':
+			verbosity = -1;
+			break;
+		case 'R':
+			error = got_pathlist_append(&wanted_refs,
+			    optarg, NULL);
+			if (error)
+				return error;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 't':
+			replace_tags = 1;
+			break;
+		case 'v':
+			if (verbosity < 0)
+				verbosity = 0;
+			else if (verbosity < 3)
+				verbosity++;
+			break;
+		case 'X':
+			delete_remote = 1;
+			break;
+		default:
+			usage_fetch();
+			break;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (fetch_all_branches && !TAILQ_EMPTY(&wanted_branches))
+		option_conflict('a', 'b');
+	if (list_refs_only) {
+		if (!TAILQ_EMPTY(&wanted_branches))
+			option_conflict('l', 'b');
+		if (fetch_all_branches)
+			option_conflict('l', 'a');
+		if (delete_refs)
+			option_conflict('l', 'd');
+		if (delete_remote)
+			option_conflict('l', 'X');
+	}
+	if (delete_remote) {
+		if (fetch_all_branches)
+			option_conflict('X', 'a');
+		if (!TAILQ_EMPTY(&wanted_branches))
+			option_conflict('X', 'b');
+		if (delete_refs)
+			option_conflict('X', 'd');
+		if (replace_tags)
+			option_conflict('X', 't');
+		if (!TAILQ_EMPTY(&wanted_refs))
+			option_conflict('X', 'R');
+	}
+
+	if (argc == 0) {
+		if (delete_remote)
+			errx(1, "-X option requires a remote name");
+		remote_name = GOT_FETCH_DEFAULT_REMOTE_NAME;
+	} else if (argc == 1)
+		remote_name = argv[0];
+	else
+		usage_fetch();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error)
+		goto done;
+
+	if (delete_remote) {
+		error = delete_refs_for_remote(repo, remote_name);
+		goto done; /* nothing else to do */
+	}
+
+	if (worktree) {
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+		if (worktree_conf) {
+			got_gotconfig_get_remotes(&nremotes, &remotes,
+			    worktree_conf);
+			for (i = 0; i < nremotes; i++) {
+				if (strcmp(remotes[i].name, remote_name) == 0) {
+					remote = &remotes[i];
+					break;
+				}
+			}
+		}
+	}
+	if (remote == NULL) {
+		repo_conf = got_repo_get_gotconfig(repo);
+		if (repo_conf) {
+			got_gotconfig_get_remotes(&nremotes, &remotes,
+			    repo_conf);
+			for (i = 0; i < nremotes; i++) {
+				if (strcmp(remotes[i].name, remote_name) == 0) {
+					remote = &remotes[i];
+					break;
+				}
+			}
+		}
+	}
+	if (remote == NULL) {
+		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
+		for (i = 0; i < nremotes; i++) {
+			if (strcmp(remotes[i].name, remote_name) == 0) {
+				remote = &remotes[i];
+				break;
+			}
+		}
+	}
+	if (remote == NULL) {
+		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
+		goto done;
+	}
+
+	if (TAILQ_EMPTY(&wanted_branches)) {
+		if (!fetch_all_branches)
+			fetch_all_branches = remote->fetch_all_branches;
+		for (i = 0; i < remote->nfetch_branches; i++) {
+			error = got_pathlist_append(&wanted_branches,
+			    remote->fetch_branches[i], NULL);
+			if (error)
+				goto done;
+		}
+	}
+	if (TAILQ_EMPTY(&wanted_refs)) {
+		for (i = 0; i < remote->nfetch_refs; i++) {
+			error = got_pathlist_append(&wanted_refs,
+			    remote->fetch_refs[i], NULL);
+			if (error)
+				goto done;
+		}
+	}
+
+	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
+	    &repo_name, remote->fetch_url);
+	if (error)
+		goto done;
+
+	if (strcmp(proto, "git") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd dns inet unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "git+ssh") == 0 ||
+	    strcmp(proto, "ssh") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "http") == 0 ||
+	    strcmp(proto, "git+http") == 0) {
+		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
+		goto done;
+	} else {
+		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
+		goto done;
+	}
+
+	error = got_dial_apply_unveil(proto);
+	if (error)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
+	if (error)
+		goto done;
+
+	if (verbosity >= 0) {
+		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
+		    remote->name, proto, host,
+		    port ? ":" : "", port ? port : "",
+		    *server_path == '/' ? "" : "/", server_path);
+	}
+
+	error = got_fetch_connect(&fetchpid, &fetchfd, proto, host, port,
+	    server_path, verbosity);
+	if (error)
+		goto done;
+
+	if (!have_bflag) {
+		/*
+		 * If set, get this remote's HEAD ref target so
+		 * if it has changed on the server we can fetch it.
+		 */
+		error = got_ref_list(&remote_refs, repo, "refs/remotes",
+		    got_ref_cmp_by_name, repo);
+		if (error)
+			goto done;
+
+		TAILQ_FOREACH(re, &remote_refs, entry) {
+			const char	*remote_refname, *remote_target;
+			size_t		 remote_name_len;
+
+			if (!got_ref_is_symbolic(re->ref))
+				continue;
+
+			remote_name_len = strlen(remote->name);
+			remote_refname = got_ref_get_name(re->ref);
+
+			/* we only want refs/remotes/$remote->name/HEAD */
+			if (strncmp(remote_refname + 13, remote->name,
+			    remote_name_len) != 0)
+				continue;
+
+			if (strcmp(remote_refname + remote_name_len + 14,
+			    GOT_REF_HEAD) != 0)
+				continue;
+
+			/*
+			 * Take the name itself because we already
+			 * only match with refs/heads/ in fetch_pack().
+			 */
+			remote_target = got_ref_get_symref_target(re->ref);
+			remote_head = remote_target + remote_name_len + 14;
+			break;
+		}
+
+		if (worktree) {
+			const char *refname;
+
+			refname = got_worktree_get_head_ref_name(worktree);
+			if (strncmp(refname, "refs/heads/", 11) == 0)
+				worktree_branch = refname;
+		}
+	}
+
+	fpa.last_scaled_size[0] = '\0';
+	fpa.last_p_indexed = -1;
+	fpa.last_p_resolved = -1;
+	fpa.verbosity = verbosity;
+	fpa.repo = repo;
+	fpa.create_configs = 0;
+	fpa.configs_created = 0;
+	memset(&fpa.config_info, 0, sizeof(fpa.config_info));
+
+	error = got_fetch_pack(&pack_hash, &refs, &symrefs, remote->name,
+	    remote->mirror_references, fetch_all_branches, &wanted_branches,
+	    &wanted_refs, list_refs_only, verbosity, fetchfd, repo,
+	    worktree_branch, remote_head, have_bflag, fetch_progress, &fpa);
+	if (error)
+		goto done;
+
+	if (list_refs_only) {
+		error = list_remote_refs(&symrefs, &refs);
+		goto done;
+	}
+
+	if (pack_hash == NULL) {
+		if (verbosity >= 0)
+			printf("Already up-to-date\n");
+	} else if (verbosity >= 0) {
+		error = got_object_id_str(&id_str, pack_hash);
+		if (error)
+			goto done;
+		printf("\nFetched %s.pack\n", id_str);
+		free(id_str);
+		id_str = NULL;
+	}
+
+	/* Update references provided with the pack file. */
+	TAILQ_FOREACH(pe, &refs, entry) {
+		const char *refname = pe->path;
+		struct got_object_id *id = pe->data;
+		struct got_reference *ref;
+		char *remote_refname;
+
+		if (is_wanted_ref(&wanted_refs, refname) &&
+		    !remote->mirror_references) {
+			error = update_wanted_ref(refname, id,
+			    remote->name, verbosity, repo);
+			if (error)
+				goto done;
+			continue;
+		}
+
+		if (remote->mirror_references ||
+		    strncmp("refs/tags/", refname, 10) == 0) {
+			error = got_ref_open(&ref, repo, refname, 1);
+			if (error) {
+				if (error->code != GOT_ERR_NOT_REF)
+					goto done;
+				error = create_ref(refname, id, verbosity,
+				    repo);
+				if (error)
+					goto done;
+			} else {
+				error = update_ref(ref, id, replace_tags,
+				    verbosity, repo);
+				unlock_err = got_ref_unlock(ref);
+				if (unlock_err && error == NULL)
+					error = unlock_err;
+				got_ref_close(ref);
+				if (error)
+					goto done;
+			}
+		} else if (strncmp("refs/heads/", refname, 11) == 0) {
+			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
+			    remote_name, refname + 11) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+
+			error = got_ref_open(&ref, repo, remote_refname, 1);
+			if (error) {
+				if (error->code != GOT_ERR_NOT_REF)
+					goto done;
+				error = create_ref(remote_refname, id,
+				    verbosity, repo);
+				if (error)
+					goto done;
+			} else {
+				error = update_ref(ref, id, replace_tags,
+				    verbosity, repo);
+				unlock_err = got_ref_unlock(ref);
+				if (unlock_err && error == NULL)
+					error = unlock_err;
+				got_ref_close(ref);
+				if (error)
+					goto done;
+			}
+
+			/* Also create a local branch if none exists yet. */
+			error = got_ref_open(&ref, repo, refname, 1);
+			if (error) {
+				if (error->code != GOT_ERR_NOT_REF)
+					goto done;
+				error = create_ref(refname, id, verbosity,
+				    repo);
+				if (error)
+					goto done;
+			} else {
+				unlock_err = got_ref_unlock(ref);
+				if (unlock_err && error == NULL)
+					error = unlock_err;
+				got_ref_close(ref);
+			}
+		}
+	}
+	if (delete_refs) {
+		error = delete_missing_refs(&refs, &symrefs, remote,
+		    verbosity, repo);
+		if (error)
+			goto done;
+	}
+
+	if (!remote->mirror_references) {
+		/* Update remote HEAD reference if the server provided one. */
+		TAILQ_FOREACH(pe, &symrefs, entry) {
+			struct got_reference *target_ref;
+			const char *refname = pe->path;
+			const char *target = pe->data;
+			char *remote_refname = NULL, *remote_target = NULL;
+
+			if (strcmp(refname, GOT_REF_HEAD) != 0)
+				continue;
+
+			if (strncmp("refs/heads/", target, 11) != 0)
+				continue;
+
+			if (asprintf(&remote_refname, "refs/remotes/%s/%s",
+			    remote->name, refname) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+			if (asprintf(&remote_target, "refs/remotes/%s/%s",
+			    remote->name, target + 11) == -1) {
+				error = got_error_from_errno("asprintf");
+				free(remote_refname);
+				goto done;
+			}
+
+			error = got_ref_open(&target_ref, repo, remote_target,
+			    0);
+			if (error) {
+				free(remote_refname);
+				free(remote_target);
+				if (error->code == GOT_ERR_NOT_REF) {
+					error = NULL;
+					continue;
+				}
+				goto done;
+			}
+			error = update_symref(remote_refname, target_ref,
+			    verbosity, repo);
+			free(remote_refname);
+			free(remote_target);
+			got_ref_close(target_ref);
+			if (error)
+				goto done;
+		}
+	}
+done:
+	if (fetchpid > 0) {
+		if (kill(fetchpid, SIGTERM) == -1)
+			error = got_error_from_errno("kill");
+		if (waitpid(fetchpid, &fetchstatus, 0) == -1 && error == NULL)
+			error = got_error_from_errno("waitpid");
+	}
+	if (fetchfd != -1 && close(fetchfd) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&refs, GOT_PATHLIST_FREE_ALL);
+	got_pathlist_free(&symrefs, GOT_PATHLIST_FREE_ALL);
+	got_pathlist_free(&wanted_branches, GOT_PATHLIST_FREE_NONE);
+	got_pathlist_free(&wanted_refs, GOT_PATHLIST_FREE_NONE);
+	got_ref_list_free(&remote_refs);
+	free(id_str);
+	free(cwd);
+	free(repo_path);
+	free(pack_hash);
+	free(proto);
+	free(host);
+	free(port);
+	free(server_path);
+	free(repo_name);
+	return error;
+}
+
+
+__dead static void
+usage_checkout(void)
+{
+	fprintf(stderr, "usage: %s checkout [-Eq] [-b branch] [-c commit] "
+	    "[-p path-prefix] repository-path [work-tree-path]\n",
+	    getprogname());
+	exit(1);
+}
+
+static void
+show_worktree_base_ref_warning(void)
+{
+	fprintf(stderr, "%s: warning: could not create a reference "
+	    "to the work tree's base commit; the commit could be "
+	    "garbage-collected by Git or 'gotadmin cleanup'; making the "
+	    "repository writable and running 'got update' will prevent this\n",
+	    getprogname());
+}
+
+struct got_checkout_progress_arg {
+	const char *worktree_path;
+	int had_base_commit_ref_error;
+	int verbosity;
+};
+
+static const struct got_error *
+checkout_progress(void *arg, unsigned char status, const char *path)
+{
+	struct got_checkout_progress_arg *a = arg;
+
+	/* Base commit bump happens silently. */
+	if (status == GOT_STATUS_BUMP_BASE)
+		return NULL;
+
+	if (status == GOT_STATUS_BASE_REF_ERR) {
+		a->had_base_commit_ref_error = 1;
+		return NULL;
+	}
+
+	while (path[0] == '/')
+		path++;
+
+	if (a->verbosity >= 0)
+		printf("%c  %s/%s\n", status, a->worktree_path, path);
+
+	return NULL;
+}
+
+static const struct got_error *
+check_cancelled(void *arg)
+{
+	if (sigint_received || sigpipe_received)
+		return got_error(GOT_ERR_CANCELLED);
+	return NULL;
+}
+
+static const struct got_error *
+check_linear_ancestry(struct got_object_id *commit_id,
+    struct got_object_id *base_commit_id, int allow_forwards_in_time_only,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *yca_id;
+
+	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
+	    commit_id, base_commit_id, 1, repo, check_cancelled, NULL);
+	if (err)
+		return err;
+
+	if (yca_id == NULL)
+		return got_error(GOT_ERR_ANCESTRY);
+
+	/*
+	 * Require a straight line of history between the target commit
+	 * and the work tree's base commit.
+	 *
+	 * Non-linear situations such as this require a rebase:
+	 *
+	 * (commit) D       F (base_commit)
+	 *           \     /
+	 *            C   E
+	 *             \ /
+	 *              B (yca)
+	 *              |
+	 *              A
+	 *
+	 * 'got update' only handles linear cases:
+	 * Update forwards in time:  A (base/yca) - B - C - D (commit)
+	 * Update backwards in time: D (base) - C - B - A (commit/yca)
+	 */
+	if (allow_forwards_in_time_only) {
+	    if (got_object_id_cmp(base_commit_id, yca_id) != 0)
+		return got_error(GOT_ERR_ANCESTRY);
+	} else if (got_object_id_cmp(commit_id, yca_id) != 0 &&
+	    got_object_id_cmp(base_commit_id, yca_id) != 0)
+		return got_error(GOT_ERR_ANCESTRY);
+
+	free(yca_id);
+	return NULL;
+}
+
+static const struct got_error *
+check_same_branch(struct got_object_id *commit_id,
+    struct got_reference *head_ref, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_commit_graph *graph = NULL;
+	struct got_object_id *head_commit_id = NULL;
+
+	err = got_ref_resolve(&head_commit_id, repo, head_ref);
+	if (err)
+		goto done;
+
+	if (got_object_id_cmp(head_commit_id, commit_id) == 0)
+		goto done;
+
+	err = got_commit_graph_open(&graph, "/", 1);
+	if (err)
+		goto done;
+
+	err = got_commit_graph_iter_start(graph, head_commit_id, repo,
+	    check_cancelled, NULL);
+	if (err)
+		goto done;
+
+	for (;;) {
+		struct got_object_id id;
+
+		err = got_commit_graph_iter_next(&id, graph, repo,
+		    check_cancelled, NULL);
+		if (err) {
+			if (err->code == GOT_ERR_ITER_COMPLETED)
+				err = got_error(GOT_ERR_ANCESTRY);
+			break;
+		}
+
+		if (got_object_id_cmp(&id, commit_id) == 0)
+			break;
+	}
+done:
+	if (graph)
+		got_commit_graph_close(graph);
+	free(head_commit_id);
+	return err;
+}
+
+static const struct got_error *
+checkout_ancestry_error(struct got_reference *ref, const char *commit_id_str)
+{
+	static char msg[512];
+	const char *branch_name;
+
+	if (got_ref_is_symbolic(ref))
+		branch_name = got_ref_get_symref_target(ref);
+	else
+		branch_name = got_ref_get_name(ref);
+
+	if (strncmp("refs/heads/", branch_name, 11) == 0)
+		branch_name += 11;
+
+	snprintf(msg, sizeof(msg),
+	    "target commit is not contained in branch '%s'; "
+	    "the branch to use must be specified with -b; "
+	    "if necessary a new branch can be created for "
+	    "this commit with 'got branch -c %s BRANCH_NAME'",
+	    branch_name, commit_id_str);
+
+	return got_error_msg(GOT_ERR_ANCESTRY, msg);
+}
+
+static const struct got_error *
+cmd_checkout(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_reference *head_ref = NULL, *ref = NULL;
+	struct got_worktree *worktree = NULL;
+	char *repo_path = NULL;
+	char *worktree_path = NULL;
+	const char *path_prefix = "";
+	const char *branch_name = GOT_REF_HEAD, *refname = NULL;
+	char *commit_id_str = NULL;
+	struct got_object_id *commit_id = NULL;
+	char *cwd = NULL;
+	int ch, same_path_prefix, allow_nonempty = 0, verbosity = 0;
+	struct got_pathlist_head paths;
+	struct got_checkout_progress_arg cpa;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "b:c:Ep:q")) != -1) {
+		switch (ch) {
+		case 'b':
+			branch_name = optarg;
+			break;
+		case 'c':
+			commit_id_str = strdup(optarg);
+			if (commit_id_str == NULL)
+				return got_error_from_errno("strdup");
+			break;
+		case 'E':
+			allow_nonempty = 1;
+			break;
+		case 'p':
+			path_prefix = optarg;
+			break;
+		case 'q':
+			verbosity = -1;
+			break;
+		default:
+			usage_checkout();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 1) {
+		char *base, *dotgit;
+		const char *path;
+		repo_path = realpath(argv[0], NULL);
+		if (repo_path == NULL)
+			return got_error_from_errno2("realpath", argv[0]);
+		cwd = getcwd(NULL, 0);
+		if (cwd == NULL) {
+			error = got_error_from_errno("getcwd");
+			goto done;
+		}
+		if (path_prefix[0])
+			path = path_prefix;
+		else
+			path = repo_path;
+		error = got_path_basename(&base, path);
+		if (error)
+			goto done;
+		dotgit = strstr(base, ".git");
+		if (dotgit)
+			*dotgit = '\0';
+		if (asprintf(&worktree_path, "%s/%s", cwd, base) == -1) {
+			error = got_error_from_errno("asprintf");
+			free(base);
+			goto done;
+		}
+		free(base);
+	} else if (argc == 2) {
+		repo_path = realpath(argv[0], NULL);
+		if (repo_path == NULL) {
+			error = got_error_from_errno2("realpath", argv[0]);
+			goto done;
+		}
+		worktree_path = realpath(argv[1], NULL);
+		if (worktree_path == NULL) {
+			if (errno != ENOENT) {
+				error = got_error_from_errno2("realpath",
+				    argv[1]);
+				goto done;
+			}
+			worktree_path = strdup(argv[1]);
+			if (worktree_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	} else
+		usage_checkout();
+
+	got_path_strip_trailing_slashes(repo_path);
+	got_path_strip_trailing_slashes(worktree_path);
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	/* Pre-create work tree path for unveil(2) */
+	error = got_path_mkdir(worktree_path);
+	if (error) {
+		if (!(error->code == GOT_ERR_ERRNO && errno == EISDIR) &&
+		    !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
+			goto done;
+		if (!allow_nonempty &&
+		    !got_path_dir_is_empty(worktree_path)) {
+			error = got_error_path(worktree_path,
+			    GOT_ERR_DIR_NOT_EMPTY);
+			goto done;
+		}
+	}
+
+	error = apply_unveil(got_repo_get_path(repo), 0, worktree_path);
+	if (error)
+		goto done;
+
+	error = got_ref_open(&head_ref, repo, branch_name, 0);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_init(worktree_path, head_ref, path_prefix, repo);
+	if (error != NULL && !(error->code == GOT_ERR_ERRNO && errno == EEXIST))
+		goto done;
+
+	error = got_worktree_open(&worktree, worktree_path);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_match_path_prefix(&same_path_prefix, worktree,
+	    path_prefix);
+	if (error != NULL)
+		goto done;
+	if (!same_path_prefix) {
+		error = got_error(GOT_ERR_PATH_PREFIX);
+		goto done;
+	}
+
+	if (commit_id_str) {
+		struct got_reflist_head refs;
+		TAILQ_INIT(&refs);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		got_ref_list_free(&refs);
+		if (error)
+			goto done;
+		error = check_linear_ancestry(commit_id,
+		    got_worktree_get_base_commit_id(worktree), 0, repo);
+		if (error != NULL) {
+			if (error->code == GOT_ERR_ANCESTRY) {
+				error = checkout_ancestry_error(
+				    head_ref, commit_id_str);
+			}
+			goto done;
+		}
+		error = check_same_branch(commit_id, head_ref, repo);
+		if (error) {
+			if (error->code == GOT_ERR_ANCESTRY) {
+				error = checkout_ancestry_error(
+				    head_ref, commit_id_str);
+			}
+			goto done;
+		}
+		error = got_worktree_set_base_commit_id(worktree, repo,
+		    commit_id);
+		if (error)
+			goto done;
+		/* Expand potentially abbreviated commit ID string. */
+		free(commit_id_str);
+		error = got_object_id_str(&commit_id_str, commit_id);
+		if (error)
+			goto done;
+	} else {
+		commit_id = got_object_id_dup(
+		    got_worktree_get_base_commit_id(worktree));
+		if (commit_id == NULL) {
+			error = got_error_from_errno("got_object_id_dup");
+			goto done;
+		}
+		error = got_object_id_str(&commit_id_str, commit_id);
+		if (error)
+			goto done;
+	}
+
+	error = got_pathlist_append(&paths, "", NULL);
+	if (error)
+		goto done;
+	cpa.worktree_path = worktree_path;
+	cpa.had_base_commit_ref_error = 0;
+	cpa.verbosity = verbosity;
+	error = got_worktree_checkout_files(worktree, &paths, repo,
+	    checkout_progress, &cpa, check_cancelled, NULL);
+	if (error != NULL)
+		goto done;
+
+	if (got_ref_is_symbolic(head_ref)) {
+		error = got_ref_resolve_symbolic(&ref, repo, head_ref);
+		if (error)
+			goto done;
+		refname = got_ref_get_name(ref);
+	} else
+		refname = got_ref_get_name(head_ref);
+	printf("Checked out %s: %s\n", refname, commit_id_str);
+	printf("Now shut up and hack\n");
+	if (cpa.had_base_commit_ref_error)
+		show_worktree_base_ref_warning();
+done:
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (head_ref)
+		got_ref_close(head_ref);
+	if (ref)
+		got_ref_close(ref);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
+	free(commit_id_str);
+	free(commit_id);
+	free(repo_path);
+	free(worktree_path);
+	free(cwd);
+	return error;
+}
+
+struct got_update_progress_arg {
+	int did_something;
+	int conflicts;
+	int obstructed;
+	int not_updated;
+	int missing;
+	int not_deleted;
+	int unversioned;
+	int verbosity;
+};
+
+static void
+print_update_progress_stats(struct got_update_progress_arg *upa)
+{
+	if (!upa->did_something)
+		return;
+
+	if (upa->conflicts > 0)
+		printf("Files with new merge conflicts: %d\n", upa->conflicts);
+	if (upa->obstructed > 0)
+		printf("File paths obstructed by a non-regular file: %d\n",
+		    upa->obstructed);
+	if (upa->not_updated > 0)
+		printf("Files not updated because of existing merge "
+		    "conflicts: %d\n", upa->not_updated);
+}
+
+/*
+ * The meaning of some status codes differs between merge-style operations and
+ * update operations. For example, the ! status code means "file was missing"
+ * if changes were merged into the work tree, and "missing file was restored"
+ * if the work tree was updated. This function should be used by any operation
+ * which merges changes into the work tree without updating the work tree.
+ */
+static void
+print_merge_progress_stats(struct got_update_progress_arg *upa)
+{
+	if (!upa->did_something)
+		return;
+
+	if (upa->conflicts > 0)
+		printf("Files with new merge conflicts: %d\n", upa->conflicts);
+	if (upa->obstructed > 0)
+		printf("File paths obstructed by a non-regular file: %d\n",
+		    upa->obstructed);
+	if (upa->missing > 0)
+		printf("Files which had incoming changes but could not be "
+		    "found in the work tree: %d\n", upa->missing);
+	if (upa->not_deleted > 0)
+		printf("Files not deleted due to differences in deleted "
+		    "content: %d\n", upa->not_deleted);
+	if (upa->unversioned > 0)
+		printf("Files not merged because an unversioned file was "
+		    "found in the work tree: %d\n", upa->unversioned);
+}
+
+__dead static void
+usage_update(void)
+{
+	fprintf(stderr, "usage: %s update [-q] [-b branch] [-c commit] "
+	    "[path ...]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+update_progress(void *arg, unsigned char status, const char *path)
+{
+	struct got_update_progress_arg *upa = arg;
+
+	if (status == GOT_STATUS_EXISTS ||
+	    status == GOT_STATUS_BASE_REF_ERR)
+		return NULL;
+
+	upa->did_something = 1;
+
+	/* Base commit bump happens silently. */
+	if (status == GOT_STATUS_BUMP_BASE)
+		return NULL;
+
+	if (status == GOT_STATUS_CONFLICT)
+		upa->conflicts++;
+	if (status == GOT_STATUS_OBSTRUCTED)
+		upa->obstructed++;
+	if (status == GOT_STATUS_CANNOT_UPDATE)
+		upa->not_updated++;
+	if (status == GOT_STATUS_MISSING)
+		upa->missing++;
+	if (status == GOT_STATUS_CANNOT_DELETE)
+		upa->not_deleted++;
+	if (status == GOT_STATUS_UNVERSIONED)
+		upa->unversioned++;
+
+	while (path[0] == '/')
+		path++;
+	if (upa->verbosity >= 0)
+		printf("%c  %s\n", status, path);
+
+	return NULL;
+}
+
+static const struct got_error *
+switch_head_ref(struct got_reference *head_ref,
+    struct got_object_id *commit_id, struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *base_id_str;
+	int ref_has_moved = 0;
+
+	/* Trivial case: switching between two different references. */
+	if (strcmp(got_ref_get_name(head_ref),
+	    got_worktree_get_head_ref_name(worktree)) != 0) {
+		printf("Switching work tree from %s to %s\n",
+		    got_worktree_get_head_ref_name(worktree),
+		    got_ref_get_name(head_ref));
+		return got_worktree_set_head_ref(worktree, head_ref);
+	}
+
+	err = check_linear_ancestry(commit_id,
+	    got_worktree_get_base_commit_id(worktree), 0, repo);
+	if (err) {
+		if (err->code != GOT_ERR_ANCESTRY)
+			return err;
+		ref_has_moved = 1;
+	}
+	if (!ref_has_moved)
+		return NULL;
+
+	/* Switching to a rebased branch with the same reference name. */
+	err = got_object_id_str(&base_id_str,
+	    got_worktree_get_base_commit_id(worktree));
+	if (err)
+		return err;
+	printf("Reference %s now points at a different branch\n",
+	    got_worktree_get_head_ref_name(worktree));
+	printf("Switching work tree from %s to %s\n", base_id_str,
+	    got_worktree_get_head_ref_name(worktree));
+	return NULL;
+}
+
+static const struct got_error *
+check_rebase_or_histedit_in_progress(struct got_worktree *worktree)
+{
+	const struct got_error *err;
+	int in_progress;
+
+	err = got_worktree_rebase_in_progress(&in_progress, worktree);
+	if (err)
+		return err;
+	if (in_progress)
+		return got_error(GOT_ERR_REBASING);
+
+	err = got_worktree_histedit_in_progress(&in_progress, worktree);
+	if (err)
+		return err;
+	if (in_progress)
+		return got_error(GOT_ERR_HISTEDIT_BUSY);
+
+	return NULL;
+}
+
+static const struct got_error *
+check_merge_in_progress(struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error *err;
+	int in_progress;
+
+	err = got_worktree_merge_in_progress(&in_progress, worktree, repo);
+	if (err)
+		return err;
+	if (in_progress)
+		return got_error(GOT_ERR_MERGE_BUSY);
+
+	return NULL;
+}
+
+static const struct got_error *
+get_worktree_paths_from_argv(struct got_pathlist_head *paths, int argc,
+    char *argv[], struct got_worktree *worktree)
+{
+	const struct got_error *err = NULL;
+	char *path;
+	struct got_pathlist_entry *new;
+	int i;
+
+	if (argc == 0) {
+		path = strdup("");
+		if (path == NULL)
+			return got_error_from_errno("strdup");
+		return got_pathlist_append(paths, path, NULL);
+	}
+
+	for (i = 0; i < argc; i++) {
+		err = got_worktree_resolve_path(&path, worktree, argv[i]);
+		if (err)
+			break;
+		err = got_pathlist_insert(&new, paths, path, NULL);
+		if (err || new == NULL /* duplicate */) {
+			free(path);
+			if (err)
+				break;
+		}
+	}
+
+	return err;
+}
+
+static const struct got_error *
+wrap_not_worktree_error(const struct got_error *orig_err,
+    const char *cmdname, const char *path)
+{
+	const struct got_error *err;
+	struct got_repository *repo;
+	static char msg[512];
+	int *pack_fds = NULL;
+
+	err = got_repo_pack_fds_open(&pack_fds);
+	if (err)
+		return err;
+
+	err = got_repo_open(&repo, path, NULL, pack_fds);
+	if (err)
+		return orig_err;
+
+	snprintf(msg, sizeof(msg),
+	    "'got %s' needs a work tree in addition to a git repository\n"
+	    "Work trees can be checked out from this Git repository with "
+	    "'got checkout'.\n"
+	    "The got(1) manual page contains more information.", cmdname);
+	err = got_error_msg(GOT_ERR_NOT_WORKTREE, msg);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (err == NULL)
+			err = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (err == NULL)
+			err = pack_err;
+	}
+	return err;
+}
+
+static const struct got_error *
+cmd_update(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *worktree_path = NULL;
+	struct got_object_id *commit_id = NULL;
+	char *commit_id_str = NULL;
+	const char *branch_name = NULL;
+	struct got_reference *head_ref = NULL;
+	struct got_pathlist_head paths;
+	struct got_pathlist_entry *pe;
+	int ch, verbosity = 0;
+	struct got_update_progress_arg upa;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "b:c:q")) != -1) {
+		switch (ch) {
+		case 'b':
+			branch_name = optarg;
+			break;
+		case 'c':
+			commit_id_str = strdup(optarg);
+			if (commit_id_str == NULL)
+				return got_error_from_errno("strdup");
+			break;
+		case 'q':
+			verbosity = -1;
+			break;
+		default:
+			usage_update();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	worktree_path = getcwd(NULL, 0);
+	if (worktree_path == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, worktree_path);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "update",
+			    worktree_path);
+		goto done;
+	}
+
+	error = check_rebase_or_histedit_in_progress(worktree);
+	if (error)
+		goto done;
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = check_merge_in_progress(worktree, repo);
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	error = got_ref_open(&head_ref, repo, branch_name ? branch_name :
+	    got_worktree_get_head_ref_name(worktree), 0);
+	if (error != NULL)
+		goto done;
+	if (commit_id_str == NULL) {
+		error = got_ref_resolve(&commit_id, repo, head_ref);
+		if (error != NULL)
+			goto done;
+		error = got_object_id_str(&commit_id_str, commit_id);
+		if (error != NULL)
+			goto done;
+	} else {
+		struct got_reflist_head refs;
+		TAILQ_INIT(&refs);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		got_ref_list_free(&refs);
+		free(commit_id_str);
+		commit_id_str = NULL;
+		if (error)
+			goto done;
+		error = got_object_id_str(&commit_id_str, commit_id);
+		if (error)
+			goto done;
+	}
+
+	if (branch_name) {
+		struct got_object_id *head_commit_id;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (pe->path_len == 0)
+				continue;
+			error = got_error_msg(GOT_ERR_BAD_PATH,
+			    "switching between branches requires that "
+			    "the entire work tree gets updated");
+			goto done;
+		}
+		error = got_ref_resolve(&head_commit_id, repo, head_ref);
+		if (error)
+			goto done;
+		error = check_linear_ancestry(commit_id, head_commit_id, 0,
+		    repo);
+		free(head_commit_id);
+		if (error != NULL)
+			goto done;
+		error = check_same_branch(commit_id, head_ref, repo);
+		if (error)
+			goto done;
+		error = switch_head_ref(head_ref, commit_id, worktree, repo);
+		if (error)
+			goto done;
+	} else {
+		error = check_linear_ancestry(commit_id,
+		    got_worktree_get_base_commit_id(worktree), 0, repo);
+		if (error != NULL) {
+			if (error->code == GOT_ERR_ANCESTRY)
+				error = got_error(GOT_ERR_BRANCH_MOVED);
+			goto done;
+		}
+		error = check_same_branch(commit_id, head_ref, repo);
+		if (error)
+			goto done;
+	}
+
+	if (got_object_id_cmp(got_worktree_get_base_commit_id(worktree),
+	    commit_id) != 0) {
+		error = got_worktree_set_base_commit_id(worktree, repo,
+		    commit_id);
+		if (error)
+			goto done;
+	}
+
+	memset(&upa, 0, sizeof(upa));
+	upa.verbosity = verbosity;
+	error = got_worktree_checkout_files(worktree, &paths, repo,
+	    update_progress, &upa, check_cancelled, NULL);
+	if (error != NULL)
+		goto done;
+
+	if (upa.did_something) {
+		printf("Updated to %s: %s\n",
+		    got_worktree_get_head_ref_name(worktree), commit_id_str);
+	} else
+		printf("Already up-to-date\n");
+
+	print_update_progress_stats(&upa);
+done:
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	free(worktree_path);
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(commit_id);
+	free(commit_id_str);
+	return error;
+}
+
+static const struct got_error *
+diff_blobs(struct got_object_id *blob_id1, struct got_object_id *blob_id2,
+    const char *path, int diff_context, int ignore_whitespace,
+    int force_text_diff, struct got_diffstat_cb_arg *dsa,
+    struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err = NULL;
+	struct got_blob_object *blob1 = NULL, *blob2 = NULL;
+	FILE *f1 = NULL, *f2 = NULL;
+	int fd1 = -1, fd2 = -1;
+
+	fd1 = got_opentempfd();
+	if (fd1 == -1)
+		return got_error_from_errno("got_opentempfd");
+	fd2 = got_opentempfd();
+	if (fd2 == -1) {
+		err = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+
+	if (blob_id1) {
+		err = got_object_open_as_blob(&blob1, repo, blob_id1, 8192,
+		    fd1);
+		if (err)
+			goto done;
+	}
+
+	err = got_object_open_as_blob(&blob2, repo, blob_id2, 8192, fd2);
+	if (err)
+		goto done;
+
+	f1 = got_opentemp();
+	if (f1 == NULL) {
+		err = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+	f2 = got_opentemp();
+	if (f2 == NULL) {
+		err = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+
+	while (path[0] == '/')
+		path++;
+	err = got_diff_blob(NULL, NULL, blob1, blob2, f1, f2, path, path,
+	    GOT_DIFF_ALGORITHM_PATIENCE, diff_context, ignore_whitespace,
+	    force_text_diff, dsa, outfile);
+done:
+	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (blob1)
+		got_object_blob_close(blob1);
+	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (blob2)
+		got_object_blob_close(blob2);
+	if (f1 && fclose(f1) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (f2 && fclose(f2) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	return err;
+}
+
+static const struct got_error *
+diff_trees(struct got_object_id *tree_id1, struct got_object_id *tree_id2,
+    const char *path, int diff_context, int ignore_whitespace,
+    int force_text_diff, struct got_diffstat_cb_arg *dsa,
+    struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err = NULL;
+	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
+	struct got_diff_blob_output_unidiff_arg arg;
+	FILE *f1 = NULL, *f2 = NULL;
+	int fd1 = -1, fd2 = -1;
+
+	if (tree_id1) {
+		err = got_object_open_as_tree(&tree1, repo, tree_id1);
+		if (err)
+			goto done;
+		fd1 = got_opentempfd();
+		if (fd1 == -1) {
+			err = got_error_from_errno("got_opentempfd");
+			goto done;
+		}
+	}
+
+	err = got_object_open_as_tree(&tree2, repo, tree_id2);
+	if (err)
+		goto done;
+
+	f1 = got_opentemp();
+	if (f1 == NULL) {
+		err = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+
+	f2 = got_opentemp();
+	if (f2 == NULL) {
+		err = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+	fd2 = got_opentempfd();
+	if (fd2 == -1) {
+		err = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+	arg.diff_context = diff_context;
+	arg.ignore_whitespace = ignore_whitespace;
+	arg.force_text_diff = force_text_diff;
+	arg.diffstat = dsa;
+	arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
+	arg.outfile = outfile;
+	arg.lines = NULL;
+	arg.nlines = 0;
+	while (path[0] == '/')
+		path++;
+	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, path, path, repo,
+	    got_diff_blob_output_unidiff, &arg, 1);
+done:
+	if (tree1)
+		got_object_tree_close(tree1);
+	if (tree2)
+		got_object_tree_close(tree2);
+	if (f1 && fclose(f1) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (f2 && fclose(f2) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	return err;
+}
+
+static const struct got_error *
+get_changed_paths(struct got_pathlist_head *paths,
+    struct got_commit_object *commit, struct got_repository *repo,
+    struct got_diffstat_cb_arg *dsa)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *tree_id1 = NULL, *tree_id2 = NULL;
+	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
+	struct got_object_qid *qid;
+	got_diff_blob_cb cb = got_diff_tree_collect_changed_paths;
+	FILE *f1 = NULL, *f2 = NULL;
+	int fd1 = -1, fd2 = -1;
+
+	if (dsa) {
+		cb = got_diff_tree_compute_diffstat;
+
+		f1 = got_opentemp();
+		if (f1 == NULL) {
+			err = got_error_from_errno("got_opentemp");
+			goto done;
+		}
+		f2 = got_opentemp();
+		if (f2 == NULL) {
+			err = got_error_from_errno("got_opentemp");
+			goto done;
+		}
+		fd1 = got_opentempfd();
+		if (fd1 == -1) {
+			err = got_error_from_errno("got_opentempfd");
+			goto done;
+		}
+		fd2 = got_opentempfd();
+		if (fd2 == -1) {
+			err = got_error_from_errno("got_opentempfd");
+			goto done;
+		}
+	}
+
+	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
+	if (qid != NULL) {
+		struct got_commit_object *pcommit;
+		err = got_object_open_as_commit(&pcommit, repo,
+		    &qid->id);
+		if (err)
+			return err;
+
+		tree_id1 = got_object_id_dup(
+		    got_object_commit_get_tree_id(pcommit));
+		if (tree_id1 == NULL) {
+			got_object_commit_close(pcommit);
+			return got_error_from_errno("got_object_id_dup");
+		}
+		got_object_commit_close(pcommit);
+
+	}
+
+	if (tree_id1) {
+		err = got_object_open_as_tree(&tree1, repo, tree_id1);
+		if (err)
+			goto done;
+	}
+
+	tree_id2 = got_object_commit_get_tree_id(commit);
+	err = got_object_open_as_tree(&tree2, repo, tree_id2);
+	if (err)
+		goto done;
+
+	err = got_diff_tree(tree1, tree2, f1, f2, fd1, fd2, "", "", repo,
+	    cb, dsa ? (void *)dsa : paths, dsa ? 1 : 0);
+done:
+	if (tree1)
+		got_object_tree_close(tree1);
+	if (tree2)
+		got_object_tree_close(tree2);
+	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (f1 && fclose(f1) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (f2 && fclose(f2) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	free(tree_id1);
+	return err;
+}
+
+static const struct got_error *
+print_patch(struct got_commit_object *commit, struct got_object_id *id,
+    const char *path, int diff_context, struct got_diffstat_cb_arg *dsa,
+    struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err = NULL;
+	struct got_commit_object *pcommit = NULL;
+	char *id_str1 = NULL, *id_str2 = NULL;
+	struct got_object_id *obj_id1 = NULL, *obj_id2 = NULL;
+	struct got_object_qid *qid;
+
+	qid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
+	if (qid != NULL) {
+		err = got_object_open_as_commit(&pcommit, repo,
+		    &qid->id);
+		if (err)
+			return err;
+		err = got_object_id_str(&id_str1, &qid->id);
+		if (err)
+			goto done;
+	}
+
+	err = got_object_id_str(&id_str2, id);
+	if (err)
+		goto done;
+
+	if (path && path[0] != '\0') {
+		int obj_type;
+		err = got_object_id_by_path(&obj_id2, repo, commit, path);
+		if (err)
+			goto done;
+		if (pcommit) {
+			err = got_object_id_by_path(&obj_id1, repo,
+			    pcommit, path);
+			if (err) {
+				if (err->code != GOT_ERR_NO_TREE_ENTRY) {
+					free(obj_id2);
+					goto done;
+				}
+			}
+		}
+		err = got_object_get_type(&obj_type, repo, obj_id2);
+		if (err) {
+			free(obj_id2);
+			goto done;
+		}
+		fprintf(outfile,
+		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
+		fprintf(outfile, "commit - %s\n",
+		    id_str1 ? id_str1 : "/dev/null");
+		fprintf(outfile, "commit + %s\n", id_str2);
+		switch (obj_type) {
+		case GOT_OBJ_TYPE_BLOB:
+			err = diff_blobs(obj_id1, obj_id2, path, diff_context,
+			    0, 0, dsa, repo, outfile);
+			break;
+		case GOT_OBJ_TYPE_TREE:
+			err = diff_trees(obj_id1, obj_id2, path, diff_context,
+			    0, 0, dsa, repo, outfile);
+			break;
+		default:
+			err = got_error(GOT_ERR_OBJ_TYPE);
+			break;
+		}
+		free(obj_id1);
+		free(obj_id2);
+	} else {
+		obj_id2 = got_object_commit_get_tree_id(commit);
+		if (pcommit)
+			obj_id1 = got_object_commit_get_tree_id(pcommit);
+		fprintf(outfile,
+		    "diff %s %s\n", id_str1 ? id_str1 : "/dev/null", id_str2);
+		fprintf(outfile, "commit - %s\n",
+		    id_str1 ? id_str1 : "/dev/null");
+		fprintf(outfile, "commit + %s\n", id_str2);
+		err = diff_trees(obj_id1, obj_id2, "", diff_context, 0, 0,
+		    dsa, repo, outfile);
+	}
+done:
+	free(id_str1);
+	free(id_str2);
+	if (pcommit)
+		got_object_commit_close(pcommit);
+	return err;
+}
+
+static char *
+get_datestr(time_t *time, char *datebuf)
+{
+	struct tm mytm, *tm;
+	char *p, *s;
+
+	tm = gmtime_r(time, &mytm);
+	if (tm == NULL)
+		return NULL;
+	s = asctime_r(tm, datebuf);
+	if (s == NULL)
+		return NULL;
+	p = strchr(s, '\n');
+	if (p)
+		*p = '\0';
+	return s;
+}
+
+static const struct got_error *
+match_commit(int *have_match, struct got_object_id *id,
+    struct got_commit_object *commit, regex_t *regex)
+{
+	const struct got_error *err = NULL;
+	regmatch_t regmatch;
+	char *id_str = NULL, *logmsg = NULL;
+
+	*have_match = 0;
+
+	err = got_object_id_str(&id_str, id);
+	if (err)
+		return err;
+
+	err = got_object_commit_get_logmsg(&logmsg, commit);
+	if (err)
+		goto done;
+
+	if (regexec(regex, got_object_commit_get_author(commit), 1,
+	    &regmatch, 0) == 0 ||
+	    regexec(regex, got_object_commit_get_committer(commit), 1,
+	    &regmatch, 0) == 0 ||
+	    regexec(regex, id_str, 1, &regmatch, 0) == 0 ||
+	    regexec(regex, logmsg, 1, &regmatch, 0) == 0)
+		*have_match = 1;
+done:
+	free(id_str);
+	free(logmsg);
+	return err;
+}
+
+static void
+match_changed_paths(int *have_match, struct got_pathlist_head *changed_paths,
+    regex_t *regex)
+{
+	regmatch_t regmatch;
+	struct got_pathlist_entry *pe;
+
+	*have_match = 0;
+
+	TAILQ_FOREACH(pe, changed_paths, entry) {
+		if (regexec(regex, pe->path, 1, &regmatch, 0) == 0) {
+			*have_match = 1;
+			break;
+		}
+	}
+}
+
+static const struct got_error *
+match_patch(int *have_match, struct got_commit_object *commit,
+    struct got_object_id *id, const char *path, int diff_context,
+    struct got_repository *repo, regex_t *regex, FILE *f)
+{
+	const struct got_error *err = NULL;
+	char *line = NULL;
+	size_t linesize = 0;
+	regmatch_t regmatch;
+
+	*have_match = 0;
+
+	err = got_opentemp_truncate(f);
+	if (err)
+		return err;
+
+	err = print_patch(commit, id, path, diff_context, NULL, repo, f);
+	if (err)
+		goto done;
+
+	if (fseeko(f, 0L, SEEK_SET) == -1) {
+		err = got_error_from_errno("fseeko");
+		goto done;
+	}
+
+	while (getline(&line, &linesize, f) != -1) {
+		if (regexec(regex, line, 1, &regmatch, 0) == 0) {
+			*have_match = 1;
+			break;
+		}
+	}
+done:
+	free(line);
+	return err;
+}
+
+#define GOT_COMMIT_SEP_STR "-----------------------------------------------\n"
+
+static const struct got_error*
+build_refs_str(char **refs_str, struct got_reflist_head *refs,
+    struct got_object_id *id, struct got_repository *repo,
+    int local_only)
+{
+	static const struct got_error *err = NULL;
+	struct got_reflist_entry *re;
+	char *s;
+	const char *name;
+
+	*refs_str = NULL;
+
+	TAILQ_FOREACH(re, refs, entry) {
+		struct got_tag_object *tag = NULL;
+		struct got_object_id *ref_id;
+		int cmp;
+
+		name = got_ref_get_name(re->ref);
+		if (strcmp(name, GOT_REF_HEAD) == 0)
+			continue;
+		if (strncmp(name, "refs/", 5) == 0)
+			name += 5;
+		if (strncmp(name, "got/", 4) == 0)
+			continue;
+		if (strncmp(name, "heads/", 6) == 0)
+			name += 6;
+		if (strncmp(name, "remotes/", 8) == 0) {
+			if (local_only)
+				continue;
+			name += 8;
+			s = strstr(name, "/" GOT_REF_HEAD);
+			if (s != NULL && strcmp(s, "/" GOT_REF_HEAD) == 0)
+				continue;
+		}
+		err = got_ref_resolve(&ref_id, repo, re->ref);
+		if (err)
+			break;
+		if (strncmp(name, "tags/", 5) == 0) {
+			err = got_object_open_as_tag(&tag, repo, ref_id);
+			if (err) {
+				if (err->code != GOT_ERR_OBJ_TYPE) {
+					free(ref_id);
+					break;
+				}
+				/* Ref points at something other than a tag. */
+				err = NULL;
+				tag = NULL;
+			}
+		}
+		cmp = got_object_id_cmp(tag ?
+		    got_object_tag_get_object_id(tag) : ref_id, id);
+		free(ref_id);
+		if (tag)
+			got_object_tag_close(tag);
+		if (cmp != 0)
+			continue;
+		s = *refs_str;
+		if (asprintf(refs_str, "%s%s%s", s ? s : "",
+		    s ? ", " : "", name) == -1) {
+			err = got_error_from_errno("asprintf");
+			free(s);
+			*refs_str = NULL;
+			break;
+		}
+		free(s);
+	}
+
+	return err;
+}
+
+static const struct got_error *
+print_commit_oneline(struct got_commit_object *commit, struct got_object_id *id,
+    struct got_repository *repo, struct got_reflist_object_id_map *refs_idmap)
+{
+	const struct got_error *err = NULL;
+	char *ref_str = NULL, *id_str = NULL, *logmsg0 = NULL;
+	char *comma, *s, *nl;
+	struct got_reflist_head *refs;
+	char datebuf[12]; /* YYYY-MM-DD + SPACE + NUL */
+	struct tm tm;
+	time_t committer_time;
+
+	refs = got_reflist_object_id_map_lookup(refs_idmap, id);
+	if (refs) {
+		err = build_refs_str(&ref_str, refs, id, repo, 1);
+		if (err)
+			return err;
+
+		/* Display the first matching ref only. */
+		if (ref_str && (comma = strchr(ref_str, ',')) != NULL)
+			*comma = '\0';
+	}
+
+	if (ref_str == NULL) {
+		err = got_object_id_str(&id_str, id);
+		if (err)
+			return err;
+	}
+
+	committer_time = got_object_commit_get_committer_time(commit);
+	if (gmtime_r(&committer_time, &tm) == NULL) {
+		err = got_error_from_errno("gmtime_r");
+		goto done;
+	}
+	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d ", &tm) == 0) {
+		err = got_error(GOT_ERR_NO_SPACE);
+		goto done;
+	}
+
+	err = got_object_commit_get_logmsg(&logmsg0, commit);
+	if (err)
+		goto done;
+
+	s = logmsg0;
+	while (isspace((unsigned char)s[0]))
+		s++;
+
+	nl = strchr(s, '\n');
+	if (nl) {
+		*nl = '\0';
+	}
+
+	if (ref_str)
+		printf("%s%-7s %s\n", datebuf, ref_str, s);
+	else
+		printf("%s%.7s %s\n", datebuf, id_str, s);
+
+	if (fflush(stdout) != 0 && err == NULL)
+		err = got_error_from_errno("fflush");
+done:
+	free(id_str);
+	free(ref_str);
+	free(logmsg0);
+	return err;
+}
+
+static const struct got_error *
+print_diffstat(struct got_diffstat_cb_arg *dsa, const char *header)
+{
+	struct got_pathlist_entry *pe;
+
+	if (header != NULL)
+		printf("%s\n", header);
+
+	TAILQ_FOREACH(pe, dsa->paths, entry) {
+		struct got_diff_changed_path *cp = pe->data;
+		int pad = dsa->max_path_len - pe->path_len + 1;
+
+		printf(" %c  %s%*c | %*d+ %*d-\n", cp->status, pe->path, pad,
+		    ' ', dsa->add_cols + 1, cp->add, dsa->rm_cols + 1, cp->rm);
+	}
+	printf("\n%d file%s changed, %d insertion%s(+), %d deletion%s(-)\n\n",
+	    dsa->nfiles, dsa->nfiles > 1 ? "s" : "", dsa->ins,
+	    dsa->ins != 1 ? "s" : "", dsa->del, dsa->del != 1 ? "s" : "");
+
+	if (fflush(stdout) != 0)
+		return got_error_from_errno("fflush");
+
+	return NULL;
+}
+
+static const struct got_error *
+printfile(FILE *f)
+{
+	char	buf[8192];
+	size_t	r;
+
+	if (fseeko(f, 0L, SEEK_SET) == -1)
+		return got_error_from_errno("fseek");
+
+	for (;;) {
+		r = fread(buf, 1, sizeof(buf), f);
+		if (r == 0) {
+			if (ferror(f))
+				return got_error_from_errno("fread");
+			if (feof(f))
+				break;
+		}
+		if (fwrite(buf, 1, r, stdout) != r)
+			return got_ferror(stdout, GOT_ERR_IO);
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+print_commit(struct got_commit_object *commit, struct got_object_id *id,
+    struct got_repository *repo, const char *path,
+    struct got_pathlist_head *changed_paths,
+    struct got_diffstat_cb_arg *diffstat, int show_patch, int diff_context,
+    struct got_reflist_object_id_map *refs_idmap, const char *custom_refs_str,
+    const char *prefix)
+{
+	const struct got_error *err = NULL;
+	FILE *f = NULL;
+	char *id_str, *datestr, *logmsg0, *logmsg, *line;
+	char datebuf[26];
+	time_t committer_time;
+	const char *author, *committer;
+	char *refs_str = NULL;
+
+	err = got_object_id_str(&id_str, id);
+	if (err)
+		return err;
+
+	if (custom_refs_str == NULL) {
+		struct got_reflist_head *refs;
+		refs = got_reflist_object_id_map_lookup(refs_idmap, id);
+		if (refs) {
+			err = build_refs_str(&refs_str, refs, id, repo, 0);
+			if (err)
+				goto done;
+		}
+	}
+
+	printf(GOT_COMMIT_SEP_STR);
+	if (custom_refs_str)
+		printf("%s %s (%s)\n", prefix ? prefix : "commit", id_str,
+		    custom_refs_str);
+	else
+		printf("%s %s%s%s%s\n", prefix ? prefix : "commit", id_str,
+		    refs_str ? " (" : "", refs_str ? refs_str : "",
+		    refs_str ? ")" : "");
+	free(id_str);
+	id_str = NULL;
+	free(refs_str);
+	refs_str = NULL;
+	printf("from: %s\n", got_object_commit_get_author(commit));
+	author = got_object_commit_get_author(commit);
+	committer = got_object_commit_get_committer(commit);
+	if (strcmp(author, committer) != 0)
+		printf("via: %s\n", committer);
+	committer_time = got_object_commit_get_committer_time(commit);
+	datestr = get_datestr(&committer_time, datebuf);
+	if (datestr)
+		printf("date: %s UTC\n", datestr);
+	if (got_object_commit_get_nparents(commit) > 1) {
+		const struct got_object_id_queue *parent_ids;
+		struct got_object_qid *qid;
+		int n = 1;
+		parent_ids = got_object_commit_get_parent_ids(commit);
+		STAILQ_FOREACH(qid, parent_ids, entry) {
+			err = got_object_id_str(&id_str, &qid->id);
+			if (err)
+				goto done;
+			printf("parent %d: %s\n", n++, id_str);
+			free(id_str);
+			id_str = NULL;
+		}
+	}
+
+	err = got_object_commit_get_logmsg(&logmsg0, commit);
+	if (err)
+		goto done;
+
+	logmsg = logmsg0;
+	do {
+		line = strsep(&logmsg, "\n");
+		if (line)
+			printf(" %s\n", line);
+	} while (line);
+	free(logmsg0);
+
+	if (changed_paths && diffstat == NULL) {
+		struct got_pathlist_entry *pe;
+
+		TAILQ_FOREACH(pe, changed_paths, entry) {
+			struct got_diff_changed_path *cp = pe->data;
+
+			printf(" %c  %s\n", cp->status, pe->path);
+		}
+		printf("\n");
+	}
+	if (show_patch) {
+		if (diffstat) {
+			f = got_opentemp();
+			if (f == NULL) {
+				err = got_error_from_errno("got_opentemp");
+				goto done;
+			}
+		}
+
+		err = print_patch(commit, id, path, diff_context, diffstat,
+		    repo, diffstat == NULL ? stdout : f);
+		if (err)
+			goto done;
+	}
+	if (diffstat) {
+		err = print_diffstat(diffstat, NULL);
+		if (err)
+			goto done;
+		if (show_patch) {
+			err = printfile(f);
+			if (err)
+				goto done;
+		}
+	}
+	if (show_patch)
+		printf("\n");
+
+	if (fflush(stdout) != 0 && err == NULL)
+		err = got_error_from_errno("fflush");
+done:
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	free(id_str);
+	free(refs_str);
+	return err;
+}
+
+static const struct got_error *
+print_commits(struct got_object_id *root_id, struct got_object_id *end_id,
+    struct got_repository *repo, const char *path, int show_changed_paths,
+    int show_diffstat, int show_patch, const char *search_pattern,
+    int diff_context, int limit, int log_branches, int reverse_display_order,
+    struct got_reflist_object_id_map *refs_idmap, int one_line,
+    FILE *tmpfile)
+{
+	const struct got_error *err;
+	struct got_commit_graph *graph;
+	regex_t regex;
+	int have_match;
+	struct got_object_id_queue reversed_commits;
+	struct got_object_qid *qid;
+	struct got_commit_object *commit;
+	struct got_pathlist_head changed_paths;
+
+	STAILQ_INIT(&reversed_commits);
+	TAILQ_INIT(&changed_paths);
+
+	if (search_pattern && regcomp(&regex, search_pattern,
+	    REG_EXTENDED | REG_NOSUB | REG_NEWLINE))
+		return got_error_msg(GOT_ERR_REGEX, search_pattern);
+
+	err = got_commit_graph_open(&graph, path, !log_branches);
+	if (err)
+		return err;
+	err = got_commit_graph_iter_start(graph, root_id, repo,
+	    check_cancelled, NULL);
+	if (err)
+		goto done;
+	for (;;) {
+		struct got_object_id id;
+		struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
+		    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
+
+		if (sigint_received || sigpipe_received)
+			break;
+
+		err = got_commit_graph_iter_next(&id, graph, repo,
+		    check_cancelled, NULL);
+		if (err) {
+			if (err->code == GOT_ERR_ITER_COMPLETED)
+				err = NULL;
+			break;
+		}
+
+		err = got_object_open_as_commit(&commit, repo, &id);
+		if (err)
+			break;
+
+		if ((show_changed_paths || (show_diffstat && !show_patch))
+		    && !reverse_display_order) {
+			err = get_changed_paths(&changed_paths, commit, repo,
+			    show_diffstat ? &dsa : NULL);
+			if (err)
+				break;
+		}
+
+		if (search_pattern) {
+			err = match_commit(&have_match, &id, commit, &regex);
+			if (err) {
+				got_object_commit_close(commit);
+				break;
+			}
+			if (have_match == 0 && show_changed_paths)
+				match_changed_paths(&have_match,
+				    &changed_paths, &regex);
+			if (have_match == 0 && show_patch) {
+				err = match_patch(&have_match, commit, &id,
+				    path, diff_context, repo, &regex, tmpfile);
+				if (err)
+					break;
+			}
+			if (have_match == 0) {
+				got_object_commit_close(commit);
+				got_pathlist_free(&changed_paths,
+				    GOT_PATHLIST_FREE_ALL);
+				continue;
+			}
+		}
+
+		if (reverse_display_order) {
+			err = got_object_qid_alloc(&qid, &id);
+			if (err)
+				break;
+			STAILQ_INSERT_HEAD(&reversed_commits, qid, entry);
+			got_object_commit_close(commit);
+		} else {
+			if (one_line)
+				err = print_commit_oneline(commit, &id,
+				    repo, refs_idmap);
+			else
+				err = print_commit(commit, &id, repo, path,
+				    (show_changed_paths || show_diffstat) ?
+				    &changed_paths : NULL,
+				    show_diffstat ? &dsa : NULL, show_patch,
+				    diff_context, refs_idmap, NULL, NULL);
+			got_object_commit_close(commit);
+			if (err)
+				break;
+		}
+		if ((limit && --limit == 0) ||
+		    (end_id && got_object_id_cmp(&id, end_id) == 0))
+			break;
+
+		got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
+	}
+	if (reverse_display_order) {
+		STAILQ_FOREACH(qid, &reversed_commits, entry) {
+			struct got_diffstat_cb_arg dsa = { 0, 0, 0, 0, 0, 0,
+			    &changed_paths, 0, 0, GOT_DIFF_ALGORITHM_PATIENCE };
+
+			err = got_object_open_as_commit(&commit, repo,
+			    &qid->id);
+			if (err)
+				break;
+			if (show_changed_paths ||
+			    (show_diffstat && !show_patch)) {
+				err = get_changed_paths(&changed_paths, commit,
+				    repo, show_diffstat ? &dsa : NULL);
+				if (err)
+					break;
+			}
+			if (one_line)
+				err = print_commit_oneline(commit, &qid->id,
+				    repo, refs_idmap);
+			else
+				err = print_commit(commit, &qid->id, repo, path,
+				    (show_changed_paths || show_diffstat) ?
+				    &changed_paths : NULL,
+				    show_diffstat ? &dsa : NULL, show_patch,
+				    diff_context, refs_idmap, NULL, NULL);
+			got_object_commit_close(commit);
+			if (err)
+				break;
+			got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
+		}
+	}
+done:
+	while (!STAILQ_EMPTY(&reversed_commits)) {
+		qid = STAILQ_FIRST(&reversed_commits);
+		STAILQ_REMOVE_HEAD(&reversed_commits, entry);
+		got_object_qid_free(qid);
+	}
+	got_pathlist_free(&changed_paths, GOT_PATHLIST_FREE_ALL);
+	if (search_pattern)
+		regfree(&regex);
+	got_commit_graph_close(graph);
+	return err;
+}
+
+__dead static void
+usage_log(void)
+{
+	fprintf(stderr, "usage: %s log [-bdPpRs] [-C number] [-c commit] "
+	    "[-l N] [-r repository-path] [-S search-pattern] [-x commit] "
+	    "[path]\n", getprogname());
+	exit(1);
+}
+
+static int
+get_default_log_limit(void)
+{
+	const char *got_default_log_limit;
+	long long n;
+	const char *errstr;
+
+	got_default_log_limit = getenv("GOT_LOG_DEFAULT_LIMIT");
+	if (got_default_log_limit == NULL)
+		return 0;
+	n = strtonum(got_default_log_limit, 0, INT_MAX, &errstr);
+	if (errstr != NULL)
+		return 0;
+	return n;
+}
+
+static const struct got_error *
+cmd_log(int argc, char *argv[])
+{
+	const struct got_error *error;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_object_id *start_id = NULL, *end_id = NULL;
+	char *repo_path = NULL, *path = NULL, *cwd = NULL, *in_repo_path = NULL;
+	const char *start_commit = NULL, *end_commit = NULL;
+	const char *search_pattern = NULL;
+	int diff_context = -1, ch;
+	int show_changed_paths = 0, show_patch = 0, limit = 0, log_branches = 0;
+	int show_diffstat = 0, reverse_display_order = 0, one_line = 0;
+	const char *errstr;
+	struct got_reflist_head refs;
+	struct got_reflist_object_id_map *refs_idmap = NULL;
+	FILE *tmpfile = NULL;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&refs);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL)
+	    == -1)
+		err(1, "pledge");
+#endif
+
+	limit = get_default_log_limit();
+
+	while ((ch = getopt(argc, argv, "bC:c:dl:PpRr:S:sx:")) != -1) {
+		switch (ch) {
+		case 'b':
+			log_branches = 1;
+			break;
+		case 'C':
+			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
+			    &errstr);
+			if (errstr != NULL)
+				errx(1, "number of context lines is %s: %s",
+				    errstr, optarg);
+			break;
+		case 'c':
+			start_commit = optarg;
+			break;
+		case 'd':
+			show_diffstat = 1;
+			break;
+		case 'l':
+			limit = strtonum(optarg, 0, INT_MAX, &errstr);
+			if (errstr != NULL)
+				errx(1, "number of commits is %s: %s",
+				    errstr, optarg);
+			break;
+		case 'P':
+			show_changed_paths = 1;
+			break;
+		case 'p':
+			show_patch = 1;
+			break;
+		case 'R':
+			reverse_display_order = 1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 'S':
+			search_pattern = optarg;
+			break;
+		case 's':
+			one_line = 1;
+			break;
+		case 'x':
+			end_commit = optarg;
+			break;
+		default:
+			usage_log();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (diff_context == -1)
+		diff_context = 3;
+	else if (!show_patch)
+		errx(1, "-C requires -p");
+
+	if (one_line && (show_patch || show_changed_paths || show_diffstat))
+		errx(1, "cannot use -s with -d, -p or -P");
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		error = NULL;
+	}
+
+	if (argc == 1) {
+		if (worktree) {
+			error = got_worktree_resolve_path(&path, worktree,
+			    argv[0]);
+			if (error)
+				goto done;
+		} else {
+			path = strdup(argv[0]);
+			if (path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	} else if (argc != 0)
+		usage_log();
+
+	if (repo_path == NULL) {
+		repo_path = worktree ?
+		    strdup(got_worktree_get_repo_path(worktree)) : strdup(cwd);
+	}
+	if (repo_path == NULL) {
+		error = got_error_from_errno("strdup");
+		goto done;
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 1,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (error)
+		goto done;
+
+	error = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
+	if (error)
+		goto done;
+
+	if (start_commit == NULL) {
+		struct got_reference *head_ref;
+		struct got_commit_object *commit = NULL;
+		error = got_ref_open(&head_ref, repo,
+		    worktree ? got_worktree_get_head_ref_name(worktree)
+		    : GOT_REF_HEAD, 0);
+		if (error != NULL)
+			goto done;
+		error = got_ref_resolve(&start_id, repo, head_ref);
+		got_ref_close(head_ref);
+		if (error != NULL)
+			goto done;
+		error = got_object_open_as_commit(&commit, repo,
+		    start_id);
+		if (error != NULL)
+			goto done;
+		got_object_commit_close(commit);
+	} else {
+		error = got_repo_match_object_id(&start_id, NULL,
+		    start_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		if (error != NULL)
+			goto done;
+	}
+	if (end_commit != NULL) {
+		error = got_repo_match_object_id(&end_id, NULL,
+		    end_commit, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		if (error != NULL)
+			goto done;
+	}
+
+	if (worktree) {
+		/*
+		 * If a path was specified on the command line it was resolved
+		 * to a path in the work tree above. Prepend the work tree's
+		 * path prefix to obtain the corresponding in-repository path.
+		 */
+		if (path) {
+			const char *prefix;
+			prefix = got_worktree_get_path_prefix(worktree);
+			if (asprintf(&in_repo_path, "%s%s%s", prefix,
+			    (path[0] != '\0') ? "/" : "", path) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+		}
+	} else
+		error = got_repo_map_path(&in_repo_path, repo,
+		    path ? path : "");
+	if (error != NULL)
+		goto done;
+	if (in_repo_path) {
+		free(path);
+		path = in_repo_path;
+	}
+
+	if (worktree) {
+		/* Release work tree lock. */
+		got_worktree_close(worktree);
+		worktree = NULL;
+	}
+
+	if (search_pattern && show_patch) {
+		tmpfile = got_opentemp();
+		if (tmpfile == NULL) {
+			error = got_error_from_errno("got_opentemp");
+			goto done;
+		}
+	}
+
+	error = print_commits(start_id, end_id, repo, path ? path : "",
+	    show_changed_paths, show_diffstat, show_patch, search_pattern,
+	    diff_context, limit, log_branches, reverse_display_order,
+	    refs_idmap, one_line, tmpfile);
+done:
+	free(path);
+	free(repo_path);
+	free(cwd);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (refs_idmap)
+		got_reflist_object_id_map_free(refs_idmap);
+	if (tmpfile && fclose(tmpfile) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	got_ref_list_free(&refs);
+	return error;
+}
+
+__dead static void
+usage_diff(void)
+{
+	fprintf(stderr, "usage: %s diff [-adPsw] [-C number] [-c commit] "
+	    "[-r repository-path] [object1 object2 | path ...]\n",
+	    getprogname());
+	exit(1);
+}
+
+struct print_diff_arg {
+	struct got_repository *repo;
+	struct got_worktree *worktree;
+	struct got_diffstat_cb_arg *diffstat;
+	int diff_context;
+	const char *id_str;
+	int header_shown;
+	int diff_staged;
+	enum got_diff_algorithm diff_algo;
+	int ignore_whitespace;
+	int force_text_diff;
+	FILE *f1;
+	FILE *f2;
+	FILE *outfile;
+};
+
+/*
+ * Create a file which contains the target path of a symlink so we can feed
+ * it as content to the diff engine.
+ */
+static const struct got_error *
+get_symlink_target_file(int *fd, int dirfd, const char *de_name,
+    const char *abspath)
+{
+	const struct got_error *err = NULL;
+	char target_path[PATH_MAX];
+	ssize_t target_len, outlen;
+
+	*fd = -1;
+
+	if (dirfd != -1) {
+		target_len = readlinkat(dirfd, de_name, target_path, PATH_MAX);
+		if (target_len == -1)
+			return got_error_from_errno2("readlinkat", abspath);
+	} else {
+		target_len = readlink(abspath, target_path, PATH_MAX);
+		if (target_len == -1)
+			return got_error_from_errno2("readlink", abspath);
+	}
+
+	*fd = got_opentempfd();
+	if (*fd == -1)
+		return got_error_from_errno("got_opentempfd");
+
+	outlen = write(*fd, target_path, target_len);
+	if (outlen == -1) {
+		err = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+
+	if (lseek(*fd, 0, SEEK_SET) == -1) {
+		err = got_error_from_errno2("lseek", abspath);
+		goto done;
+	}
+done:
+	if (err) {
+		close(*fd);
+		*fd = -1;
+	}
+	return err;
+}
+
+static const struct got_error *
+print_diff(void *arg, unsigned char status, unsigned char staged_status,
+    const char *path, struct got_object_id *blob_id,
+    struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
+    int dirfd, const char *de_name)
+{
+	struct print_diff_arg *a = arg;
+	const struct got_error *err = NULL;
+	struct got_blob_object *blob1 = NULL;
+	int fd = -1, fd1 = -1, fd2 = -1;
+	FILE *f2 = NULL;
+	char *abspath = NULL, *label1 = NULL;
+	struct stat sb;
+	off_t size1 = 0;
+	int f2_exists = 0;
+
+	memset(&sb, 0, sizeof(sb));
+
+	if (a->diff_staged) {
+		if (staged_status != GOT_STATUS_MODIFY &&
+		    staged_status != GOT_STATUS_ADD &&
+		    staged_status != GOT_STATUS_DELETE)
+			return NULL;
+	} else {
+		if (staged_status == GOT_STATUS_DELETE)
+			return NULL;
+		if (status == GOT_STATUS_NONEXISTENT)
+			return got_error_set_errno(ENOENT, path);
+		if (status != GOT_STATUS_MODIFY &&
+		    status != GOT_STATUS_ADD &&
+		    status != GOT_STATUS_DELETE &&
+		    status != GOT_STATUS_CONFLICT)
+			return NULL;
+	}
+
+	err = got_opentemp_truncate(a->f1);
+	if (err)
+		return got_error_from_errno("got_opentemp_truncate");
+	err = got_opentemp_truncate(a->f2);
+	if (err)
+		return got_error_from_errno("got_opentemp_truncate");
+
+	if (!a->header_shown) {
+		if (fprintf(a->outfile, "diff %s%s\n",
+		    a->diff_staged ? "-s " : "",
+		    got_worktree_get_root_path(a->worktree)) < 0) {
+			err = got_error_from_errno("fprintf");
+			goto done;
+		}
+		if (fprintf(a->outfile, "commit - %s\n", a->id_str) < 0) {
+			err = got_error_from_errno("fprintf");
+			goto done;
+		}
+		if (fprintf(a->outfile, "path + %s%s\n",
+		    got_worktree_get_root_path(a->worktree),
+		    a->diff_staged ? " (staged changes)" : "") < 0) {
+			err = got_error_from_errno("fprintf");
+			goto done;
+		}
+		a->header_shown = 1;
+	}
+
+	if (a->diff_staged) {
+		const char *label1 = NULL, *label2 = NULL;
+		switch (staged_status) {
+		case GOT_STATUS_MODIFY:
+			label1 = path;
+			label2 = path;
+			break;
+		case GOT_STATUS_ADD:
+			label2 = path;
+			break;
+		case GOT_STATUS_DELETE:
+			label1 = path;
+			break;
+		default:
+			return got_error(GOT_ERR_FILE_STATUS);
+		}
+		fd1 = got_opentempfd();
+		if (fd1 == -1) {
+			err = got_error_from_errno("got_opentempfd");
+			goto done;
+		}
+		fd2 = got_opentempfd();
+		if (fd2 == -1) {
+			err = got_error_from_errno("got_opentempfd");
+			goto done;
+		}
+		err = got_diff_objects_as_blobs(NULL, NULL, a->f1, a->f2,
+		    fd1, fd2, blob_id, staged_blob_id, label1, label2,
+		    a->diff_algo, a->diff_context, a->ignore_whitespace,
+		    a->force_text_diff, a->diffstat, a->repo, a->outfile);
+		goto done;
+	}
+
+	fd1 = got_opentempfd();
+	if (fd1 == -1) {
+		err = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+
+	if (staged_status == GOT_STATUS_ADD ||
+	    staged_status == GOT_STATUS_MODIFY) {
+		char *id_str;
+		err = got_object_open_as_blob(&blob1, a->repo, staged_blob_id,
+		    8192, fd1);
+		if (err)
+			goto done;
+		err = got_object_id_str(&id_str, staged_blob_id);
+		if (err)
+			goto done;
+		if (asprintf(&label1, "%s (staged)", id_str) == -1) {
+			err = got_error_from_errno("asprintf");
+			free(id_str);
+			goto done;
+		}
+		free(id_str);
+	} else if (status != GOT_STATUS_ADD) {
+		err = got_object_open_as_blob(&blob1, a->repo, blob_id, 8192,
+		    fd1);
+		if (err)
+			goto done;
+	}
+
+	if (status != GOT_STATUS_DELETE) {
+		if (asprintf(&abspath, "%s/%s",
+		    got_worktree_get_root_path(a->worktree), path) == -1) {
+			err = got_error_from_errno("asprintf");
+			goto done;
+		}
+
+		if (dirfd != -1) {
+			fd = openat(dirfd, de_name,
+			    O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
+			if (fd == -1) {
+				if (!got_err_open_nofollow_on_symlink()) {
+					err = got_error_from_errno2("openat",
+					    abspath);
+					goto done;
+				}
+				err = get_symlink_target_file(&fd, dirfd,
+				    de_name, abspath);
+				if (err)
+					goto done;
+			}
+		} else {
+			fd = open(abspath, O_RDONLY | O_NOFOLLOW | O_CLOEXEC);
+			if (fd == -1) {
+				if (!got_err_open_nofollow_on_symlink()) {
+					err = got_error_from_errno2("open",
+					    abspath);
+					goto done;
+				}
+				err = get_symlink_target_file(&fd, dirfd,
+				    de_name, abspath);
+				if (err)
+					goto done;
+			}
+		}
+		if (fstatat(fd, abspath, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
+			err = got_error_from_errno2("fstatat", abspath);
+			goto done;
+		}
+		f2 = fdopen(fd, "r");
+		if (f2 == NULL) {
+			err = got_error_from_errno2("fdopen", abspath);
+			goto done;
+		}
+		fd = -1;
+		f2_exists = 1;
+	}
+
+	if (blob1) {
+		err = got_object_blob_dump_to_file(&size1, NULL, NULL,
+		    a->f1, blob1);
+		if (err)
+			goto done;
+	}
+
+	err = got_diff_blob_file(blob1, a->f1, size1, label1, f2 ? f2 : a->f2,
+	    f2_exists, &sb, path, GOT_DIFF_ALGORITHM_PATIENCE, a->diff_context,
+	    a->ignore_whitespace, a->force_text_diff, a->diffstat, a->outfile);
+done:
+	if (fd1 != -1 && close(fd1) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (fd2 != -1 && close(fd2) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (blob1)
+		got_object_blob_close(blob1);
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (f2 && fclose(f2) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	free(abspath);
+	return err;
+}
+
+static const struct got_error *
+cmd_diff(int argc, char *argv[])
+{
+	const struct got_error *error;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *repo_path = NULL;
+	const char *commit_args[2] = { NULL, NULL };
+	int ncommit_args = 0;
+	struct got_object_id *ids[2] = { NULL, NULL };
+	char *labels[2] = { NULL, NULL };
+	int type1 = GOT_OBJ_TYPE_ANY, type2 = GOT_OBJ_TYPE_ANY;
+	int diff_context = 3, diff_staged = 0, ignore_whitespace = 0, ch, i;
+	int force_text_diff = 0, force_path = 0, rflag = 0, show_diffstat = 0;
+	const char *errstr;
+	struct got_reflist_head refs;
+	struct got_pathlist_head diffstat_paths, paths;
+	FILE *f1 = NULL, *f2 = NULL, *outfile = NULL;
+	int fd1 = -1, fd2 = -1;
+	int *pack_fds = NULL;
+	struct got_diffstat_cb_arg dsa;
+
+	memset(&dsa, 0, sizeof(dsa));
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&paths);
+	TAILQ_INIT(&diffstat_paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "aC:c:dPr:sw")) != -1) {
+		switch (ch) {
+		case 'a':
+			force_text_diff = 1;
+			break;
+		case 'C':
+			diff_context = strtonum(optarg, 0, GOT_DIFF_MAX_CONTEXT,
+			    &errstr);
+			if (errstr != NULL)
+				errx(1, "number of context lines is %s: %s",
+				    errstr, optarg);
+			break;
+		case 'c':
+			if (ncommit_args >= 2)
+				errx(1, "too many -c options used");
+			commit_args[ncommit_args++] = optarg;
+			break;
+		case 'd':
+			show_diffstat = 1;
+			break;
+		case 'P':
+			force_path = 1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			rflag = 1;
+			break;
+		case 's':
+			diff_staged = 1;
+			break;
+		case 'w':
+			ignore_whitespace = 1;
+			break;
+		default:
+			usage_diff();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	free(repo_path);
+	if (error != NULL)
+		goto done;
+
+	if (show_diffstat) {
+		dsa.paths = &diffstat_paths;
+		dsa.force_text = force_text_diff;
+		dsa.ignore_ws = ignore_whitespace;
+		dsa.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
+	}
+
+	if (rflag || worktree == NULL || ncommit_args > 0) {
+		if (force_path) {
+			error = got_error_msg(GOT_ERR_NOT_IMPL,
+			    "-P option can only be used when diffing "
+			    "a work tree");
+			goto done;
+		}
+		if (diff_staged) {
+			error = got_error_msg(GOT_ERR_NOT_IMPL,
+			    "-s option can only be used when diffing "
+			    "a work tree");
+			goto done;
+		}
+	}
+
+	error = apply_unveil(got_repo_get_path(repo), 1,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if ((!force_path && argc == 2) || ncommit_args > 0) {
+		int obj_type = (ncommit_args > 0 ?
+		    GOT_OBJ_TYPE_COMMIT : GOT_OBJ_TYPE_ANY);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		for (i = 0; i < (ncommit_args > 0 ? ncommit_args : argc); i++) {
+			const char *arg;
+			if (ncommit_args > 0)
+				arg = commit_args[i];
+			else
+				arg = argv[i];
+			error = got_repo_match_object_id(&ids[i], &labels[i],
+			    arg, obj_type, &refs, repo);
+			if (error) {
+				if (error->code != GOT_ERR_NOT_REF &&
+				    error->code != GOT_ERR_NO_OBJ)
+					goto done;
+				if (ncommit_args > 0)
+					goto done;
+				error = NULL;
+				break;
+			}
+		}
+	}
+
+	f1 = got_opentemp();
+	if (f1 == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+
+	f2 = got_opentemp();
+	if (f2 == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+
+	outfile = got_opentemp();
+	if (outfile == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+
+	if (ncommit_args == 0 && (ids[0] == NULL || ids[1] == NULL)) {
+		struct print_diff_arg arg;
+		char *id_str;
+
+		if (worktree == NULL) {
+			if (argc == 2 && ids[0] == NULL) {
+				error = got_error_path(argv[0], GOT_ERR_NO_OBJ);
+				goto done;
+			} else if (argc == 2 && ids[1] == NULL) {
+				error = got_error_path(argv[1], GOT_ERR_NO_OBJ);
+				goto done;
+			} else if (argc > 0) {
+				error = got_error_fmt(GOT_ERR_NOT_WORKTREE,
+				    "%s", "specified paths cannot be resolved");
+				goto done;
+			} else {
+				error = got_error(GOT_ERR_NOT_WORKTREE);
+				goto done;
+			}
+		}
+
+		error = get_worktree_paths_from_argv(&paths, argc, argv,
+		    worktree);
+		if (error)
+			goto done;
+
+		error = got_object_id_str(&id_str,
+		    got_worktree_get_base_commit_id(worktree));
+		if (error)
+			goto done;
+		arg.repo = repo;
+		arg.worktree = worktree;
+		arg.diff_algo = GOT_DIFF_ALGORITHM_PATIENCE;
+		arg.diff_context = diff_context;
+		arg.id_str = id_str;
+		arg.header_shown = 0;
+		arg.diff_staged = diff_staged;
+		arg.ignore_whitespace = ignore_whitespace;
+		arg.force_text_diff = force_text_diff;
+		arg.diffstat = show_diffstat ? &dsa : NULL;
+		arg.f1 = f1;
+		arg.f2 = f2;
+		arg.outfile = outfile;
+
+		error = got_worktree_status(worktree, &paths, repo, 0,
+		    print_diff, &arg, check_cancelled, NULL);
+		free(id_str);
+		if (error)
+			goto done;
+
+		if (show_diffstat && dsa.nfiles > 0) {
+			char *header;
+
+			if (asprintf(&header, "diffstat %s%s",
+			    diff_staged ? "-s " : "",
+			    got_worktree_get_root_path(worktree)) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+
+			error = print_diffstat(&dsa, header);
+			free(header);
+			if (error)
+				goto done;
+		}
+
+		error = printfile(outfile);
+		goto done;
+	}
+
+	if (ncommit_args == 1) {
+		struct got_commit_object *commit;
+		error = got_object_open_as_commit(&commit, repo, ids[0]);
+		if (error)
+			goto done;
+
+		labels[1] = labels[0];
+		ids[1] = ids[0];
+		if (got_object_commit_get_nparents(commit) > 0) {
+			const struct got_object_id_queue *pids;
+			struct got_object_qid *pid;
+			pids = got_object_commit_get_parent_ids(commit);
+			pid = STAILQ_FIRST(pids);
+			ids[0] = got_object_id_dup(&pid->id);
+			if (ids[0] == NULL) {
+				error = got_error_from_errno(
+				    "got_object_id_dup");
+				got_object_commit_close(commit);
+				goto done;
+			}
+			error = got_object_id_str(&labels[0], ids[0]);
+			if (error) {
+				got_object_commit_close(commit);
+				goto done;
+			}
+		} else {
+			ids[0] = NULL;
+			labels[0] = strdup("/dev/null");
+			if (labels[0] == NULL) {
+				error = got_error_from_errno("strdup");
+				got_object_commit_close(commit);
+				goto done;
+			}
+		}
+
+		got_object_commit_close(commit);
+	}
+
+	if (ncommit_args == 0 && argc > 2) {
+		error = got_error_msg(GOT_ERR_BAD_PATH,
+		    "path arguments cannot be used when diffing two objects");
+		goto done;
+	}
+
+	if (ids[0]) {
+		error = got_object_get_type(&type1, repo, ids[0]);
+		if (error)
+			goto done;
+	}
+
+	error = got_object_get_type(&type2, repo, ids[1]);
+	if (error)
+		goto done;
+	if (type1 != GOT_OBJ_TYPE_ANY && type1 != type2) {
+		error = got_error(GOT_ERR_OBJ_TYPE);
+		goto done;
+	}
+	if (type1 == GOT_OBJ_TYPE_BLOB && argc > 2) {
+		error = got_error_msg(GOT_ERR_OBJ_TYPE,
+		    "path arguments cannot be used when diffing blobs");
+		goto done;
+	}
+
+	for (i = 0; ncommit_args > 0 && i < argc; i++) {
+		char *in_repo_path;
+		struct got_pathlist_entry *new;
+		if (worktree) {
+			const char *prefix;
+			char *p;
+			error = got_worktree_resolve_path(&p, worktree,
+			    argv[i]);
+			if (error)
+				goto done;
+			prefix = got_worktree_get_path_prefix(worktree);
+			while (prefix[0] == '/')
+				prefix++;
+			if (asprintf(&in_repo_path, "%s%s%s", prefix,
+			    (p[0] != '\0' && prefix[0] != '\0') ? "/" : "",
+			    p) == -1) {
+				error = got_error_from_errno("asprintf");
+				free(p);
+				goto done;
+			}
+			free(p);
+		} else {
+			char *mapped_path, *s;
+			error = got_repo_map_path(&mapped_path, repo, argv[i]);
+			if (error)
+				goto done;
+			s = mapped_path;
+			while (s[0] == '/')
+				s++;
+			in_repo_path = strdup(s);
+			if (in_repo_path == NULL) {
+				error = got_error_from_errno("asprintf");
+				free(mapped_path);
+				goto done;
+			}
+			free(mapped_path);
+
+		}
+		error = got_pathlist_insert(&new, &paths, in_repo_path, NULL);
+		if (error || new == NULL /* duplicate */)
+			free(in_repo_path);
+		if (error)
+			goto done;
+	}
+
+	if (worktree) {
+		/* Release work tree lock. */
+		got_worktree_close(worktree);
+		worktree = NULL;
+	}
+
+	fd1 = got_opentempfd();
+	if (fd1 == -1) {
+		error = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+
+	fd2 = got_opentempfd();
+	if (fd2 == -1) {
+		error = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+
+	switch (type1 == GOT_OBJ_TYPE_ANY ? type2 : type1) {
+	case GOT_OBJ_TYPE_BLOB:
+		error = got_diff_objects_as_blobs(NULL, NULL, f1, f2,
+		    fd1, fd2, ids[0], ids[1], NULL, NULL,
+		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
+		    ignore_whitespace, force_text_diff,
+		    show_diffstat ? &dsa : NULL, repo, outfile);
+		break;
+	case GOT_OBJ_TYPE_TREE:
+		error = got_diff_objects_as_trees(NULL, NULL, f1, f2, fd1, fd2,
+		    ids[0], ids[1], &paths, "", "",
+		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
+		    ignore_whitespace, force_text_diff,
+		    show_diffstat ? &dsa : NULL, repo, outfile);
+		break;
+	case GOT_OBJ_TYPE_COMMIT:
+		fprintf(outfile, "diff %s %s\n", labels[0], labels[1]);
+		error = got_diff_objects_as_commits(NULL, NULL, f1, f2,
+		    fd1, fd2, ids[0], ids[1], &paths,
+		    GOT_DIFF_ALGORITHM_PATIENCE, diff_context,
+		    ignore_whitespace, force_text_diff,
+		    show_diffstat ? &dsa : NULL, repo, outfile);
+		break;
+	default:
+		error = got_error(GOT_ERR_OBJ_TYPE);
+	}
+	if (error)
+		goto done;
+
+	if (show_diffstat && dsa.nfiles > 0) {
+		char *header = NULL;
+
+		if (asprintf(&header, "diffstat %s %s",
+		    labels[0], labels[1]) == -1) {
+			error = got_error_from_errno("asprintf");
+			goto done;
+		}
+
+		error = print_diffstat(&dsa, header);
+		free(header);
+		if (error)
+			goto done;
+	}
+
+	error = printfile(outfile);
+
+done:
+	free(labels[0]);
+	free(labels[1]);
+	free(ids[0]);
+	free(ids[1]);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	got_pathlist_free(&diffstat_paths, GOT_PATHLIST_FREE_ALL);
+	got_ref_list_free(&refs);
+	if (outfile && fclose(outfile) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	if (f1 && fclose(f1) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	if (f2 && fclose(f2) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	return error;
+}
+
+__dead static void
+usage_blame(void)
+{
+	fprintf(stderr,
+	    "usage: %s blame [-c commit] [-r repository-path] path\n",
+	    getprogname());
+	exit(1);
+}
+
+struct blame_line {
+	int annotated;
+	char *id_str;
+	char *committer;
+	char datebuf[11]; /* YYYY-MM-DD + NUL */
+};
+
+struct blame_cb_args {
+	struct blame_line *lines;
+	int nlines;
+	int nlines_prec;
+	int lineno_cur;
+	off_t *line_offsets;
+	FILE *f;
+	struct got_repository *repo;
+};
+
+static const struct got_error *
+blame_cb(void *arg, int nlines, int lineno,
+    struct got_commit_object *commit, struct got_object_id *id)
+{
+	const struct got_error *err = NULL;
+	struct blame_cb_args *a = arg;
+	struct blame_line *bline;
+	char *line = NULL;
+	size_t linesize = 0;
+	off_t offset;
+	struct tm tm;
+	time_t committer_time;
+
+	if (nlines != a->nlines ||
+	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
+		return got_error(GOT_ERR_RANGE);
+
+	if (sigint_received)
+		return got_error(GOT_ERR_ITER_COMPLETED);
+
+	if (lineno == -1)
+		return NULL; /* no change in this commit */
+
+	/* Annotate this line. */
+	bline = &a->lines[lineno - 1];
+	if (bline->annotated)
+		return NULL;
+	err = got_object_id_str(&bline->id_str, id);
+	if (err)
+		return err;
+
+	bline->committer = strdup(got_object_commit_get_committer(commit));
+	if (bline->committer == NULL) {
+		err = got_error_from_errno("strdup");
+		goto done;
+	}
+
+	committer_time = got_object_commit_get_committer_time(commit);
+	if (gmtime_r(&committer_time, &tm) == NULL)
+		return got_error_from_errno("gmtime_r");
+	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
+	    &tm) == 0) {
+		err = got_error(GOT_ERR_NO_SPACE);
+		goto done;
+	}
+	bline->annotated = 1;
+
+	/* Print lines annotated so far. */
+	bline = &a->lines[a->lineno_cur - 1];
+	if (!bline->annotated)
+		goto done;
+
+	offset = a->line_offsets[a->lineno_cur - 1];
+	if (fseeko(a->f, offset, SEEK_SET) == -1) {
+		err = got_error_from_errno("fseeko");
+		goto done;
+	}
+
+	while (a->lineno_cur <= a->nlines && bline->annotated) {
+		char *smallerthan, *at, *nl, *committer;
+		size_t len;
+
+		if (getline(&line, &linesize, a->f) == -1) {
+			if (ferror(a->f))
+				err = got_error_from_errno("getline");
+			break;
+		}
+
+		committer = bline->committer;
+		smallerthan = strchr(committer, '<');
+		if (smallerthan && smallerthan[1] != '\0')
+			committer = smallerthan + 1;
+		at = strchr(committer, '@');
+		if (at)
+			*at = '\0';
+		len = strlen(committer);
+		if (len >= 9)
+			committer[8] = '\0';
+
+		nl = strchr(line, '\n');
+		if (nl)
+			*nl = '\0';
+		printf("%.*d) %.8s %s %-8s %s\n", a->nlines_prec, a->lineno_cur,
+		    bline->id_str, bline->datebuf, committer, line);
+
+		a->lineno_cur++;
+		bline = &a->lines[a->lineno_cur - 1];
+	}
+done:
+	free(line);
+	return err;
+}
+
+static const struct got_error *
+cmd_blame(int argc, char *argv[])
+{
+	const struct got_error *error;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *path, *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
+	char *link_target = NULL;
+	struct got_object_id *obj_id = NULL;
+	struct got_object_id *commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	struct got_blob_object *blob = NULL;
+	char *commit_id_str = NULL;
+	struct blame_cb_args bca;
+	int ch, obj_type, i, fd1 = -1, fd2 = -1, fd3 = -1;
+	off_t filesize;
+	int *pack_fds = NULL;
+	FILE *f1 = NULL, *f2 = NULL;
+
+	fd1 = got_opentempfd();
+	if (fd1 == -1)
+		return got_error_from_errno("got_opentempfd");
+
+	memset(&bca, 0, sizeof(bca));
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:r:")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_str = optarg;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		default:
+			usage_blame();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 1)
+		path = argv[0];
+	else
+		usage_blame();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				if (error)
+					goto done;
+			}
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (worktree) {
+		const char *prefix = got_worktree_get_path_prefix(worktree);
+		char *p;
+
+		error = got_worktree_resolve_path(&p, worktree, path);
+		if (error)
+			goto done;
+		if (asprintf(&in_repo_path, "%s%s%s", prefix,
+		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ? "/" : "",
+		    p) == -1) {
+			error = got_error_from_errno("asprintf");
+			free(p);
+			goto done;
+		}
+		free(p);
+		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+	} else {
+		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+		if (error)
+			goto done;
+		error = got_repo_map_path(&in_repo_path, repo, path);
+	}
+	if (error)
+		goto done;
+
+	if (commit_id_str == NULL) {
+		struct got_reference *head_ref;
+		error = got_ref_open(&head_ref, repo, worktree ?
+		    got_worktree_get_head_ref_name(worktree) : GOT_REF_HEAD, 0);
+		if (error != NULL)
+			goto done;
+		error = got_ref_resolve(&commit_id, repo, head_ref);
+		got_ref_close(head_ref);
+		if (error != NULL)
+			goto done;
+	} else {
+		struct got_reflist_head refs;
+		TAILQ_INIT(&refs);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		got_ref_list_free(&refs);
+		if (error)
+			goto done;
+	}
+
+	if (worktree) {
+		/* Release work tree lock. */
+		got_worktree_close(worktree);
+		worktree = NULL;
+	}
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+
+	error = got_object_resolve_symlinks(&link_target, in_repo_path,
+	    commit, repo);
+	if (error)
+		goto done;
+
+	error = got_object_id_by_path(&obj_id, repo, commit,
+	    link_target ? link_target : in_repo_path);
+	if (error)
+		goto done;
+
+	error = got_object_get_type(&obj_type, repo, obj_id);
+	if (error)
+		goto done;
+
+	if (obj_type != GOT_OBJ_TYPE_BLOB) {
+		error = got_error_path(link_target ? link_target : in_repo_path,
+		    GOT_ERR_OBJ_TYPE);
+		goto done;
+	}
+
+	error = got_object_open_as_blob(&blob, repo, obj_id, 8192, fd1);
+	if (error)
+		goto done;
+	bca.f = got_opentemp();
+	if (bca.f == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
+	    &bca.line_offsets, bca.f, blob);
+	if (error || bca.nlines == 0)
+		goto done;
+
+	/* Don't include \n at EOF in the blame line count. */
+	if (bca.line_offsets[bca.nlines - 1] == filesize)
+		bca.nlines--;
+
+	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
+	if (bca.lines == NULL) {
+		error = got_error_from_errno("calloc");
+		goto done;
+	}
+	bca.lineno_cur = 1;
+	bca.nlines_prec = 0;
+	i = bca.nlines;
+	while (i > 0) {
+		i /= 10;
+		bca.nlines_prec++;
+	}
+	bca.repo = repo;
+
+	fd2 = got_opentempfd();
+	if (fd2 == -1) {
+		error = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+	fd3 = got_opentempfd();
+	if (fd3 == -1) {
+		error = got_error_from_errno("got_opentempfd");
+		goto done;
+	}
+	f1 = got_opentemp();
+	if (f1 == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+	f2 = got_opentemp();
+	if (f2 == NULL) {
+		error = got_error_from_errno("got_opentemp");
+		goto done;
+	}
+	error = got_blame(link_target ? link_target : in_repo_path, commit_id,
+	    repo, GOT_DIFF_ALGORITHM_PATIENCE, blame_cb, &bca,
+	    check_cancelled, NULL, fd2, fd3, f1, f2);
+done:
+	free(in_repo_path);
+	free(link_target);
+	free(repo_path);
+	free(cwd);
+	free(commit_id);
+	free(obj_id);
+	if (commit)
+		got_object_commit_close(commit);
+
+	if (fd1 != -1 && close(fd1) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (fd2 != -1 && close(fd2) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (fd3 != -1 && close(fd3) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (f1 && fclose(f1) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	if (f2 && fclose(f2) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+
+	if (blob)
+		got_object_blob_close(blob);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (bca.lines) {
+		for (i = 0; i < bca.nlines; i++) {
+			struct blame_line *bline = &bca.lines[i];
+			free(bline->id_str);
+			free(bline->committer);
+		}
+		free(bca.lines);
+	}
+	free(bca.line_offsets);
+	if (bca.f && fclose(bca.f) == EOF && error == NULL)
+		error = got_error_from_errno("fclose");
+	return error;
+}
+
+__dead static void
+usage_tree(void)
+{
+	fprintf(stderr, "usage: %s tree [-iR] [-c commit] [-r repository-path] "
+	    "[path]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+print_entry(struct got_tree_entry *te, const char *id, const char *path,
+    const char *root_path, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	int is_root_path = (strcmp(path, root_path) == 0);
+	const char *modestr = "";
+	mode_t mode = got_tree_entry_get_mode(te);
+	char *link_target = NULL;
+
+	path += strlen(root_path);
+	while (path[0] == '/')
+		path++;
+
+	if (got_object_tree_entry_is_submodule(te))
+		modestr = "$";
+	else if (S_ISLNK(mode)) {
+		int i;
+
+		err = got_tree_entry_get_symlink_target(&link_target, te, repo);
+		if (err)
+			return err;
+		for (i = 0; link_target[i] != '\0'; i++) {
+			if (!isprint((unsigned char)link_target[i]))
+				link_target[i] = '?';
+		}
+
+		modestr = "@";
+	}
+	else if (S_ISDIR(mode))
+		modestr = "/";
+	else if (mode & S_IXUSR)
+		modestr = "*";
+
+	printf("%s%s%s%s%s%s%s\n", id ? id : "", path,
+	    is_root_path ? "" : "/", got_tree_entry_get_name(te), modestr,
+	    link_target ? " -> ": "", link_target ? link_target : "");
+
+	free(link_target);
+	return NULL;
+}
+
+static const struct got_error *
+print_tree(const char *path, struct got_commit_object *commit,
+    int show_ids, int recurse, const char *root_path,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *tree_id = NULL;
+	struct got_tree_object *tree = NULL;
+	int nentries, i;
+
+	err = got_object_id_by_path(&tree_id, repo, commit, path);
+	if (err)
+		goto done;
+
+	err = got_object_open_as_tree(&tree, repo, tree_id);
+	if (err)
+		goto done;
+	nentries = got_object_tree_get_nentries(tree);
+	for (i = 0; i < nentries; i++) {
+		struct got_tree_entry *te;
+		char *id = NULL;
+
+		if (sigint_received || sigpipe_received)
+			break;
+
+		te = got_object_tree_get_entry(tree, i);
+		if (show_ids) {
+			char *id_str;
+			err = got_object_id_str(&id_str,
+			    got_tree_entry_get_id(te));
+			if (err)
+				goto done;
+			if (asprintf(&id, "%s ", id_str) == -1) {
+				err = got_error_from_errno("asprintf");
+				free(id_str);
+				goto done;
+			}
+			free(id_str);
+		}
+		err = print_entry(te, id, path, root_path, repo);
+		free(id);
+		if (err)
+			goto done;
+
+		if (recurse && S_ISDIR(got_tree_entry_get_mode(te))) {
+			char *child_path;
+			if (asprintf(&child_path, "%s%s%s", path,
+			    path[0] == '/' && path[1] == '\0' ? "" : "/",
+			    got_tree_entry_get_name(te)) == -1) {
+				err = got_error_from_errno("asprintf");
+				goto done;
+			}
+			err = print_tree(child_path, commit, show_ids, 1,
+			    root_path, repo);
+			free(child_path);
+			if (err)
+				goto done;
+		}
+	}
+done:
+	if (tree)
+		got_object_tree_close(tree);
+	free(tree_id);
+	return err;
+}
+
+static const struct got_error *
+cmd_tree(int argc, char *argv[])
+{
+	const struct got_error *error;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	const char *path, *refname = NULL;
+	char *cwd = NULL, *repo_path = NULL, *in_repo_path = NULL;
+	struct got_object_id *commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	char *commit_id_str = NULL;
+	int show_ids = 0, recurse = 0;
+	int ch;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:iRr:")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_str = optarg;
+			break;
+		case 'i':
+			show_ids = 1;
+			break;
+		case 'R':
+			recurse = 1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		default:
+			usage_tree();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 1)
+		path = argv[0];
+	else if (argc > 1)
+		usage_tree();
+	else
+		path = NULL;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (worktree) {
+		const char *prefix = got_worktree_get_path_prefix(worktree);
+		char *p;
+
+		if (path == NULL || got_path_is_root_dir(path))
+			path = "";
+		error = got_worktree_resolve_path(&p, worktree, path);
+		if (error)
+			goto done;
+		if (asprintf(&in_repo_path, "%s%s%s", prefix,
+		    (p[0] != '\0' && !got_path_is_root_dir(prefix)) ?  "/" : "",
+		    p) == -1) {
+			error = got_error_from_errno("asprintf");
+			free(p);
+			goto done;
+		}
+		free(p);
+		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+		if (error)
+			goto done;
+	} else {
+		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+		if (error)
+			goto done;
+		if (path == NULL)
+			path = "/";
+		error = got_repo_map_path(&in_repo_path, repo, path);
+		if (error != NULL)
+			goto done;
+	}
+
+	if (commit_id_str == NULL) {
+		struct got_reference *head_ref;
+		if (worktree)
+			refname = got_worktree_get_head_ref_name(worktree);
+		else
+			refname = GOT_REF_HEAD;
+		error = got_ref_open(&head_ref, repo, refname, 0);
+		if (error != NULL)
+			goto done;
+		error = got_ref_resolve(&commit_id, repo, head_ref);
+		got_ref_close(head_ref);
+		if (error != NULL)
+			goto done;
+	} else {
+		struct got_reflist_head refs;
+		TAILQ_INIT(&refs);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		got_ref_list_free(&refs);
+		if (error)
+			goto done;
+	}
+
+	if (worktree) {
+		/* Release work tree lock. */
+		got_worktree_close(worktree);
+		worktree = NULL;
+	}
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+
+	error = print_tree(in_repo_path, commit, show_ids, recurse,
+	    in_repo_path, repo);
+done:
+	free(in_repo_path);
+	free(repo_path);
+	free(cwd);
+	free(commit_id);
+	if (commit)
+		got_object_commit_close(commit);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	return error;
+}
+
+__dead static void
+usage_status(void)
+{
+	fprintf(stderr, "usage: %s status [-I] [-S status-codes] "
+	    "[-s status-codes] [path ...]\n", getprogname());
+	exit(1);
+}
+
+struct got_status_arg {
+	char *status_codes;
+	int suppress;
+};
+
+static const struct got_error *
+print_status(void *arg, unsigned char status, unsigned char staged_status,
+    const char *path, struct got_object_id *blob_id,
+    struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
+    int dirfd, const char *de_name)
+{
+	struct got_status_arg *st = arg;
+
+	if (status == staged_status && (status == GOT_STATUS_DELETE))
+		status = GOT_STATUS_NO_CHANGE;
+	if (st != NULL && st->status_codes) {
+		size_t ncodes = strlen(st->status_codes);
+		int i, j = 0;
+
+		for (i = 0; i < ncodes ; i++) {
+			if (st->suppress) {
+				if (status == st->status_codes[i] ||
+				    staged_status == st->status_codes[i]) {
+					j++;
+					continue;
+				}
+			} else {
+				if (status == st->status_codes[i] ||
+				    staged_status == st->status_codes[i])
+					break;
+			}
+		}
+
+		if (st->suppress && j == 0)
+			goto print;
+
+		if (i == ncodes)
+			return NULL;
+	}
+print:
+	printf("%c%c %s\n", status, staged_status, path);
+	return NULL;
+}
+
+static const struct got_error *
+cmd_status(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_status_arg st;
+	char *cwd = NULL;
+	struct got_pathlist_head paths;
+	int ch, i, no_ignores = 0;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+	memset(&st, 0, sizeof(st));
+	st.status_codes = NULL;
+	st.suppress = 0;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "IS:s:")) != -1) {
+		switch (ch) {
+		case 'I':
+			no_ignores = 1;
+			break;
+		case 'S':
+			if (st.status_codes != NULL && st.suppress == 0)
+				option_conflict('S', 's');
+			st.suppress = 1;
+			/* fallthrough */
+		case 's':
+			for (i = 0; optarg[i] != '\0'; i++) {
+				switch (optarg[i]) {
+				case GOT_STATUS_MODIFY:
+				case GOT_STATUS_ADD:
+				case GOT_STATUS_DELETE:
+				case GOT_STATUS_CONFLICT:
+				case GOT_STATUS_MISSING:
+				case GOT_STATUS_OBSTRUCTED:
+				case GOT_STATUS_UNVERSIONED:
+				case GOT_STATUS_MODE_CHANGE:
+				case GOT_STATUS_NONEXISTENT:
+					break;
+				default:
+					errx(1, "invalid status code '%c'",
+					    optarg[i]);
+				}
+			}
+			if (ch == 's' && st.suppress)
+				option_conflict('s', 'S');
+			st.status_codes = optarg;
+			break;
+		default:
+			usage_status();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "status", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 1,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	error = got_worktree_status(worktree, &paths, repo, no_ignores,
+	    print_status, &st, check_cancelled, NULL);
+done:
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_ref(void)
+{
+	fprintf(stderr, "usage: %s ref [-dlt] [-c object] [-r repository-path] "
+	    "[-s reference] [name]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+list_refs(struct got_repository *repo, const char *refname, int sort_by_time)
+{
+	static const struct got_error *err = NULL;
+	struct got_reflist_head refs;
+	struct got_reflist_entry *re;
+
+	TAILQ_INIT(&refs);
+	err = got_ref_list(&refs, repo, refname, sort_by_time ?
+	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
+	    repo);
+	if (err)
+		return err;
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		char *refstr;
+		refstr = got_ref_to_str(re->ref);
+		if (refstr == NULL) {
+			err = got_error_from_errno("got_ref_to_str");
+			break;
+		}
+		printf("%s: %s\n", got_ref_get_name(re->ref), refstr);
+		free(refstr);
+	}
+
+	got_ref_list_free(&refs);
+	return err;
+}
+
+static const struct got_error *
+delete_ref_by_name(struct got_repository *repo, const char *refname)
+{
+	const struct got_error *err;
+	struct got_reference *ref;
+
+	err = got_ref_open(&ref, repo, refname, 0);
+	if (err)
+		return err;
+
+	err = delete_ref(repo, ref);
+	got_ref_close(ref);
+	return err;
+}
+
+static const struct got_error *
+add_ref(struct got_repository *repo, const char *refname, const char *target)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *id = NULL;
+	struct got_reference *ref = NULL;
+	struct got_reflist_head refs;
+
+	/*
+	 * Don't let the user create a reference name with a leading '-'.
+	 * While technically a valid reference name, this case is usually
+	 * an unintended typo.
+	 */
+	if (refname[0] == '-')
+		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
+
+	TAILQ_INIT(&refs);
+	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (err)
+		goto done;
+	err = got_repo_match_object_id(&id, NULL, target, GOT_OBJ_TYPE_ANY,
+	    &refs, repo);
+	got_ref_list_free(&refs);
+	if (err)
+		goto done;
+
+	err = got_ref_alloc(&ref, refname, id);
+	if (err)
+		goto done;
+
+	err = got_ref_write(ref, repo);
+done:
+	if (ref)
+		got_ref_close(ref);
+	free(id);
+	return err;
+}
+
+static const struct got_error *
+add_symref(struct got_repository *repo, const char *refname, const char *target)
+{
+	const struct got_error *err = NULL;
+	struct got_reference *ref = NULL;
+	struct got_reference *target_ref = NULL;
+
+	/*
+	 * Don't let the user create a reference name with a leading '-'.
+	 * While technically a valid reference name, this case is usually
+	 * an unintended typo.
+	 */
+	if (refname[0] == '-')
+		return got_error_path(refname, GOT_ERR_REF_NAME_MINUS);
+
+	err = got_ref_open(&target_ref, repo, target, 0);
+	if (err)
+		return err;
+
+	err = got_ref_alloc_symref(&ref, refname, target_ref);
+	if (err)
+		goto done;
+
+	err = got_ref_write(ref, repo);
+done:
+	if (target_ref)
+		got_ref_close(target_ref);
+	if (ref)
+		got_ref_close(ref);
+	return err;
+}
+
+static const struct got_error *
+cmd_ref(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *repo_path = NULL;
+	int ch, do_list = 0, do_delete = 0, sort_by_time = 0;
+	const char *obj_arg = NULL, *symref_target= NULL;
+	char *refname = NULL;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+	    "sendfd unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:dlr:s:t")) != -1) {
+		switch (ch) {
+		case 'c':
+			obj_arg = optarg;
+			break;
+		case 'd':
+			do_delete = 1;
+			break;
+		case 'l':
+			do_list = 1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 's':
+			symref_target = optarg;
+			break;
+		case 't':
+			sort_by_time = 1;
+			break;
+		default:
+			usage_ref();
+			/* NOTREACHED */
+		}
+	}
+
+	if (obj_arg && do_list)
+		option_conflict('c', 'l');
+	if (obj_arg && do_delete)
+		option_conflict('c', 'd');
+	if (obj_arg && symref_target)
+		option_conflict('c', 's');
+	if (symref_target && do_delete)
+		option_conflict('s', 'd');
+	if (symref_target && do_list)
+		option_conflict('s', 'l');
+	if (do_delete && do_list)
+		option_conflict('d', 'l');
+	if (sort_by_time && !do_list)
+		errx(1, "-t option requires -l option");
+
+	argc -= optind;
+	argv += optind;
+
+	if (do_list) {
+		if (argc != 0 && argc != 1)
+			usage_ref();
+		if (argc == 1) {
+			refname = strdup(argv[0]);
+			if (refname == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	} else {
+		if (argc != 1)
+			usage_ref();
+		refname = strdup(argv[0]);
+		if (refname == NULL) {
+			error = got_error_from_errno("strdup");
+			goto done;
+		}
+	}
+
+	if (refname)
+		got_path_strip_trailing_slashes(refname);
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+#ifndef PROFILE
+	if (do_list) {
+		/* Remove "cpath" promise. */
+		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
+		    NULL) == -1)
+			err(1, "pledge");
+	}
+#endif
+
+	error = apply_unveil(got_repo_get_path(repo), do_list,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if (do_list)
+		error = list_refs(repo, refname, sort_by_time);
+	else if (do_delete)
+		error = delete_ref_by_name(repo, refname);
+	else if (symref_target)
+		error = add_symref(repo, refname, symref_target);
+	else {
+		if (obj_arg == NULL)
+			usage_ref();
+		error = add_ref(repo, refname, obj_arg);
+	}
+done:
+	free(refname);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	free(cwd);
+	free(repo_path);
+	return error;
+}
+
+__dead static void
+usage_branch(void)
+{
+	fprintf(stderr, "usage: %s branch [-lnt] [-c commit] [-d name] "
+	    "[-r repository-path] [name]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+list_branch(struct got_repository *repo, struct got_worktree *worktree,
+    struct got_reference *ref)
+{
+	const struct got_error *err = NULL;
+	const char *refname, *marker = "  ";
+	char *refstr;
+
+	refname = got_ref_get_name(ref);
+	if (worktree && strcmp(refname,
+	    got_worktree_get_head_ref_name(worktree)) == 0) {
+		struct got_object_id *id = NULL;
+
+		err = got_ref_resolve(&id, repo, ref);
+		if (err)
+			return err;
+		if (got_object_id_cmp(id,
+		    got_worktree_get_base_commit_id(worktree)) == 0)
+			marker = "* ";
+		else
+			marker = "~ ";
+		free(id);
+	}
+
+	if (strncmp(refname, "refs/heads/", 11) == 0)
+		refname += 11;
+	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
+		refname += 18;
+	if (strncmp(refname, "refs/remotes/", 13) == 0)
+		refname += 13;
+
+	refstr = got_ref_to_str(ref);
+	if (refstr == NULL)
+		return got_error_from_errno("got_ref_to_str");
+
+	printf("%s%s: %s\n", marker, refname, refstr);
+	free(refstr);
+	return NULL;
+}
+
+static const struct got_error *
+show_current_branch(struct got_repository *repo, struct got_worktree *worktree)
+{
+	const char *refname;
+
+	if (worktree == NULL)
+		return got_error(GOT_ERR_NOT_WORKTREE);
+
+	refname = got_worktree_get_head_ref_name(worktree);
+
+	if (strncmp(refname, "refs/heads/", 11) == 0)
+		refname += 11;
+	if (strncmp(refname, "refs/got/worktree/", 18) == 0)
+		refname += 18;
+
+	printf("%s\n", refname);
+
+	return NULL;
+}
+
+static const struct got_error *
+list_branches(struct got_repository *repo, struct got_worktree *worktree,
+    int sort_by_time)
+{
+	static const struct got_error *err = NULL;
+	struct got_reflist_head refs;
+	struct got_reflist_entry *re;
+	struct got_reference *temp_ref = NULL;
+	int rebase_in_progress, histedit_in_progress;
+
+	TAILQ_INIT(&refs);
+
+	if (worktree) {
+		err = got_worktree_rebase_in_progress(&rebase_in_progress,
+		    worktree);
+		if (err)
+			return err;
+
+		err = got_worktree_histedit_in_progress(&histedit_in_progress,
+		    worktree);
+		if (err)
+			return err;
+
+		if (rebase_in_progress || histedit_in_progress) {
+			err = got_ref_open(&temp_ref, repo,
+			    got_worktree_get_head_ref_name(worktree), 0);
+			if (err)
+				return err;
+			list_branch(repo, worktree, temp_ref);
+			got_ref_close(temp_ref);
+		}
+	}
+
+	err = got_ref_list(&refs, repo, "refs/heads", sort_by_time ?
+	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
+	    repo);
+	if (err)
+		return err;
+
+	TAILQ_FOREACH(re, &refs, entry)
+		list_branch(repo, worktree, re->ref);
+
+	got_ref_list_free(&refs);
+
+	err = got_ref_list(&refs, repo, "refs/remotes", sort_by_time ?
+	    got_ref_cmp_by_commit_timestamp_descending : got_ref_cmp_by_name,
+	    repo);
+	if (err)
+		return err;
+
+	TAILQ_FOREACH(re, &refs, entry)
+		list_branch(repo, worktree, re->ref);
+
+	got_ref_list_free(&refs);
+
+	return NULL;
+}
+
+static const struct got_error *
+delete_branch(struct got_repository *repo, struct got_worktree *worktree,
+    const char *branch_name)
+{
+	const struct got_error *err = NULL;
+	struct got_reference *ref = NULL;
+	char *refname, *remote_refname = NULL;
+
+	if (strncmp(branch_name, "refs/", 5) == 0)
+		branch_name += 5;
+	if (strncmp(branch_name, "heads/", 6) == 0)
+		branch_name += 6;
+	else if (strncmp(branch_name, "remotes/", 8) == 0)
+		branch_name += 8;
+
+	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1)
+		return got_error_from_errno("asprintf");
+
+	if (asprintf(&remote_refname, "refs/remotes/%s",
+	    branch_name) == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	err = got_ref_open(&ref, repo, refname, 0);
+	if (err) {
+		const struct got_error *err2;
+		if (err->code != GOT_ERR_NOT_REF)
+			goto done;
+		/*
+		 * Keep 'err' intact such that if neither branch exists
+		 * we report "refs/heads" rather than "refs/remotes" in
+		 * our error message.
+		 */
+		err2 = got_ref_open(&ref, repo, remote_refname, 0);
+		if (err2)
+			goto done;
+		err = NULL;
+	}
+
+	if (worktree &&
+	    strcmp(got_worktree_get_head_ref_name(worktree),
+	    got_ref_get_name(ref)) == 0) {
+		err = got_error_msg(GOT_ERR_SAME_BRANCH,
+		    "will not delete this work tree's current branch");
+		goto done;
+	}
+
+	err = delete_ref(repo, ref);
+done:
+	if (ref)
+		got_ref_close(ref);
+	free(refname);
+	free(remote_refname);
+	return err;
+}
+
+static const struct got_error *
+add_branch(struct got_repository *repo, const char *branch_name,
+    struct got_object_id *base_commit_id)
+{
+	const struct got_error *err = NULL;
+	struct got_reference *ref = NULL;
+	char *refname = NULL;
+
+	/*
+	 * Don't let the user create a branch name with a leading '-'.
+	 * While technically a valid reference name, this case is usually
+	 * an unintended typo.
+	 */
+	if (branch_name[0] == '-')
+		return got_error_path(branch_name, GOT_ERR_REF_NAME_MINUS);
+
+	if (strncmp(branch_name, "refs/heads/", 11) == 0)
+		branch_name += 11;
+
+	if (asprintf(&refname, "refs/heads/%s", branch_name) == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	err = got_ref_open(&ref, repo, refname, 0);
+	if (err == NULL) {
+		err = got_error(GOT_ERR_BRANCH_EXISTS);
+		goto done;
+	} else if (err->code != GOT_ERR_NOT_REF)
+		goto done;
+
+	err = got_ref_alloc(&ref, refname, base_commit_id);
+	if (err)
+		goto done;
+
+	err = got_ref_write(ref, repo);
+done:
+	if (ref)
+		got_ref_close(ref);
+	free(refname);
+	return err;
+}
+
+static const struct got_error *
+cmd_branch(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *repo_path = NULL;
+	int ch, do_list = 0, do_show = 0, do_update = 1, sort_by_time = 0;
+	const char *delref = NULL, *commit_id_arg = NULL;
+	struct got_reference *ref = NULL;
+	struct got_pathlist_head paths;
+	struct got_object_id *commit_id = NULL;
+	char *commit_id_str = NULL;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+	    "sendfd unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:d:lnr:t")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_arg = optarg;
+			break;
+		case 'd':
+			delref = optarg;
+			break;
+		case 'l':
+			do_list = 1;
+			break;
+		case 'n':
+			do_update = 0;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 't':
+			sort_by_time = 1;
+			break;
+		default:
+			usage_branch();
+			/* NOTREACHED */
+		}
+	}
+
+	if (do_list && delref)
+		option_conflict('l', 'd');
+	if (sort_by_time && !do_list)
+		errx(1, "-t option requires -l option");
+
+	argc -= optind;
+	argv += optind;
+
+	if (!do_list && !delref && argc == 0)
+		do_show = 1;
+
+	if ((do_list || delref || do_show) && commit_id_arg != NULL)
+		errx(1, "-c option can only be used when creating a branch");
+
+	if (do_list || delref) {
+		if (argc > 0)
+			usage_branch();
+	} else if (!do_show && argc != 1)
+		usage_branch();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+#ifndef PROFILE
+	if (do_list || do_show) {
+		/* Remove "cpath" promise. */
+		if (pledge("stdio rpath wpath flock proc exec sendfd unveil",
+		    NULL) == -1)
+			err(1, "pledge");
+	}
+#endif
+
+	error = apply_unveil(got_repo_get_path(repo), do_list,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if (do_show)
+		error = show_current_branch(repo, worktree);
+	else if (do_list)
+		error = list_branches(repo, worktree, sort_by_time);
+	else if (delref)
+		error = delete_branch(repo, worktree, delref);
+	else {
+		struct got_reflist_head refs;
+		TAILQ_INIT(&refs);
+		error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name,
+		    NULL);
+		if (error)
+			goto done;
+		if (commit_id_arg == NULL)
+			commit_id_arg = worktree ?
+			    got_worktree_get_head_ref_name(worktree) :
+			    GOT_REF_HEAD;
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_arg, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		got_ref_list_free(&refs);
+		if (error)
+			goto done;
+		error = add_branch(repo, argv[0], commit_id);
+		if (error)
+			goto done;
+		if (worktree && do_update) {
+			struct got_update_progress_arg upa;
+			char *branch_refname = NULL;
+
+			error = got_object_id_str(&commit_id_str, commit_id);
+			if (error)
+				goto done;
+			error = get_worktree_paths_from_argv(&paths, 0, NULL,
+			    worktree);
+			if (error)
+				goto done;
+			if (asprintf(&branch_refname, "refs/heads/%s", argv[0])
+			    == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+			error = got_ref_open(&ref, repo, branch_refname, 0);
+			free(branch_refname);
+			if (error)
+				goto done;
+			error = switch_head_ref(ref, commit_id, worktree,
+			    repo);
+			if (error)
+				goto done;
+			error = got_worktree_set_base_commit_id(worktree, repo,
+			    commit_id);
+			if (error)
+				goto done;
+			memset(&upa, 0, sizeof(upa));
+			error = got_worktree_checkout_files(worktree, &paths,
+			    repo, update_progress, &upa, check_cancelled,
+			    NULL);
+			if (error)
+				goto done;
+			if (upa.did_something) {
+				printf("Updated to %s: %s\n",
+				    got_worktree_get_head_ref_name(worktree),
+				    commit_id_str);
+			}
+			print_update_progress_stats(&upa);
+		}
+	}
+done:
+	if (ref)
+		got_ref_close(ref);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	free(cwd);
+	free(repo_path);
+	free(commit_id);
+	free(commit_id_str);
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	return error;
+}
+
+
+__dead static void
+usage_tag(void)
+{
+	fprintf(stderr, "usage: %s tag [-lVv] [-c commit] [-m message] "
+	    "[-r repository-path] [-s signer-id] name\n", getprogname());
+	exit(1);
+}
+
+#if 0
+static const struct got_error *
+sort_tags(struct got_reflist_head *sorted, struct got_reflist_head *tags)
+{
+	const struct got_error *err = NULL;
+	struct got_reflist_entry *re, *se, *new;
+	struct got_object_id *re_id, *se_id;
+	struct got_tag_object *re_tag, *se_tag;
+	time_t re_time, se_time;
+
+	STAILQ_FOREACH(re, tags, entry) {
+		se = STAILQ_FIRST(sorted);
+		if (se == NULL) {
+			err = got_reflist_entry_dup(&new, re);
+			if (err)
+				return err;
+			STAILQ_INSERT_HEAD(sorted, new, entry);
+			continue;
+		} else {
+			err = got_ref_resolve(&re_id, repo, re->ref);
+			if (err)
+				break;
+			err = got_object_open_as_tag(&re_tag, repo, re_id);
+			free(re_id);
+			if (err)
+				break;
+			re_time = got_object_tag_get_tagger_time(re_tag);
+			got_object_tag_close(re_tag);
+		}
+
+		while (se) {
+			err = got_ref_resolve(&se_id, repo, re->ref);
+			if (err)
+				break;
+			err = got_object_open_as_tag(&se_tag, repo, se_id);
+			free(se_id);
+			if (err)
+				break;
+			se_time = got_object_tag_get_tagger_time(se_tag);
+			got_object_tag_close(se_tag);
+
+			if (se_time > re_time) {
+				err = got_reflist_entry_dup(&new, re);
+				if (err)
+					return err;
+				STAILQ_INSERT_AFTER(sorted, se, new, entry);
+				break;
+			}
+			se = STAILQ_NEXT(se, entry);
+			continue;
+		}
+	}
+done:
+	return err;
+}
+#endif
+
+static const struct got_error *
+get_tag_refname(char **refname, const char *tag_name)
+{
+	const struct got_error *err;
+
+	if (strncmp("refs/tags/", tag_name, 10) == 0) {
+		*refname = strdup(tag_name);
+		if (*refname == NULL)
+			return got_error_from_errno("strdup");
+	} else if (asprintf(refname, "refs/tags/%s", tag_name) == -1) {
+		err = got_error_from_errno("asprintf");
+		*refname = NULL;
+		return err;
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+list_tags(struct got_repository *repo, const char *tag_name, int verify_tags,
+    const char *allowed_signers, const char *revoked_signers, int verbosity)
+{
+	static const struct got_error *err = NULL;
+	struct got_reflist_head refs;
+	struct got_reflist_entry *re;
+	char *wanted_refname = NULL;
+	int bad_sigs = 0;
+
+	TAILQ_INIT(&refs);
+
+	err = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
+	if (err)
+		return err;
+
+	if (tag_name) {
+		struct got_reference *ref;
+		err = get_tag_refname(&wanted_refname, tag_name);
+		if (err)
+			goto done;
+		/* Wanted tag reference should exist. */
+		err = got_ref_open(&ref, repo, wanted_refname, 0);
+		if (err)
+			goto done;
+		got_ref_close(ref);
+	}
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		const char *refname;
+		char *refstr, *tagmsg0, *tagmsg, *line, *id_str, *datestr;
+		char datebuf[26];
+		const char *tagger, *ssh_sig = NULL;
+		char *sig_msg = NULL;
+		time_t tagger_time;
+		struct got_object_id *id;
+		struct got_tag_object *tag;
+		struct got_commit_object *commit = NULL;
+
+		refname = got_ref_get_name(re->ref);
+		if (strncmp(refname, "refs/tags/", 10) != 0 ||
+		    (wanted_refname && strcmp(refname, wanted_refname) != 0))
+			continue;
+		refname += 10;
+		refstr = got_ref_to_str(re->ref);
+		if (refstr == NULL) {
+			err = got_error_from_errno("got_ref_to_str");
+			break;
+		}
+
+		err = got_ref_resolve(&id, repo, re->ref);
+		if (err)
+			break;
+		err = got_object_open_as_tag(&tag, repo, id);
+		if (err) {
+			if (err->code != GOT_ERR_OBJ_TYPE) {
+				free(id);
+				break;
+			}
+			/* "lightweight" tag */
+			err = got_object_open_as_commit(&commit, repo, id);
+			if (err) {
+				free(id);
+				break;
+			}
+			tagger = got_object_commit_get_committer(commit);
+			tagger_time =
+			    got_object_commit_get_committer_time(commit);
+			err = got_object_id_str(&id_str, id);
+			free(id);
+			if (err)
+				break;
+		} else {
+			free(id);
+			tagger = got_object_tag_get_tagger(tag);
+			tagger_time = got_object_tag_get_tagger_time(tag);
+			err = got_object_id_str(&id_str,
+			    got_object_tag_get_object_id(tag));
+			if (err)
+				break;
+		}
+
+		if (tag && verify_tags) {
+			ssh_sig = got_sigs_get_tagmsg_ssh_signature(
+			    got_object_tag_get_message(tag));
+			if (ssh_sig && allowed_signers == NULL) {
+				err = got_error_msg(
+				    GOT_ERR_VERIFY_TAG_SIGNATURE,
+				    "SSH signature verification requires "
+				        "setting allowed_signers in "
+				        "got.conf(5)");
+				break;
+			}
+		}
+
+		printf("%stag %s %s\n", GOT_COMMIT_SEP_STR, refname, refstr);
+		free(refstr);
+		printf("from: %s\n", tagger);
+		datestr = get_datestr(&tagger_time, datebuf);
+		if (datestr)
+			printf("date: %s UTC\n", datestr);
+		if (commit)
+			printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT, id_str);
+		else {
+			switch (got_object_tag_get_object_type(tag)) {
+			case GOT_OBJ_TYPE_BLOB:
+				printf("object: %s %s\n", GOT_OBJ_LABEL_BLOB,
+				    id_str);
+				break;
+			case GOT_OBJ_TYPE_TREE:
+				printf("object: %s %s\n", GOT_OBJ_LABEL_TREE,
+				    id_str);
+				break;
+			case GOT_OBJ_TYPE_COMMIT:
+				printf("object: %s %s\n", GOT_OBJ_LABEL_COMMIT,
+				    id_str);
+				break;
+			case GOT_OBJ_TYPE_TAG:
+				printf("object: %s %s\n", GOT_OBJ_LABEL_TAG,
+				    id_str);
+				break;
+			default:
+				break;
+			}
+		}
+		free(id_str);
+
+		if (ssh_sig) {
+			err = got_sigs_verify_tag_ssh(&sig_msg, tag, ssh_sig,
+				allowed_signers, revoked_signers, verbosity);
+			if (err && err->code == GOT_ERR_BAD_TAG_SIGNATURE)
+				bad_sigs = 1;
+			else if (err)
+				break;
+			printf("signature: %s", sig_msg);
+			free(sig_msg);
+			sig_msg = NULL;
+		}
+
+		if (commit) {
+			err = got_object_commit_get_logmsg(&tagmsg0, commit);
+			if (err)
+				break;
+			got_object_commit_close(commit);
+		} else {
+			tagmsg0 = strdup(got_object_tag_get_message(tag));
+			got_object_tag_close(tag);
+			if (tagmsg0 == NULL) {
+				err = got_error_from_errno("strdup");
+				break;
+			}
+		}
+
+		tagmsg = tagmsg0;
+		do {
+			line = strsep(&tagmsg, "\n");
+			if (line)
+				printf(" %s\n", line);
+		} while (line);
+		free(tagmsg0);
+	}
+done:
+	got_ref_list_free(&refs);
+	free(wanted_refname);
+
+	if (err == NULL && bad_sigs)
+		err = got_error(GOT_ERR_BAD_TAG_SIGNATURE);
+	return err;
+}
+
+static const struct got_error *
+get_tag_message(char **tagmsg, char **tagmsg_path, const char *commit_id_str,
+    const char *tag_name, const char *repo_path)
+{
+	const struct got_error *err = NULL;
+	char *template = NULL, *initial_content = NULL;
+	char *editor = NULL;
+	int initial_content_len;
+	int fd = -1;
+
+	if (asprintf(&template, GOT_TMPDIR_STR "/got-tagmsg") == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	initial_content_len = asprintf(&initial_content,
+	    "\n# tagging commit %s as %s\n",
+	    commit_id_str, tag_name);
+	if (initial_content_len == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	err = got_opentemp_named_fd(tagmsg_path, &fd, template, "");
+	if (err)
+		goto done;
+
+	if (write(fd, initial_content, initial_content_len) == -1) {
+		err = got_error_from_errno2("write", *tagmsg_path);
+		goto done;
+	}
+	if (close(fd) == -1) {
+		err = got_error_from_errno2("close", *tagmsg_path);
+		goto done;
+	}
+	fd = -1;
+
+	err = get_editor(&editor);
+	if (err)
+		goto done;
+	err = edit_logmsg(tagmsg, editor, *tagmsg_path, initial_content,
+	    initial_content_len, 1);
+done:
+	free(initial_content);
+	free(template);
+	free(editor);
+
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno2("close", *tagmsg_path);
+
+	if (err) {
+		free(*tagmsg);
+		*tagmsg = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+add_tag(struct got_repository *repo, const char *tagger,
+    const char *tag_name, const char *commit_arg, const char *tagmsg_arg,
+    const char *signer_id, int verbosity)
+{
+	const struct got_error *err = NULL;
+	struct got_object_id *commit_id = NULL, *tag_id = NULL;
+	char *label = NULL, *commit_id_str = NULL;
+	struct got_reference *ref = NULL;
+	char *refname = NULL, *tagmsg = NULL;
+	char *tagmsg_path = NULL, *tag_id_str = NULL;
+	int preserve_tagmsg = 0;
+	struct got_reflist_head refs;
+
+	TAILQ_INIT(&refs);
+
+	/*
+	 * Don't let the user create a tag name with a leading '-'.
+	 * While technically a valid reference name, this case is usually
+	 * an unintended typo.
+	 */
+	if (tag_name[0] == '-')
+		return got_error_path(tag_name, GOT_ERR_REF_NAME_MINUS);
+
+	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (err)
+		goto done;
+
+	err = got_repo_match_object_id(&commit_id, &label, commit_arg,
+	    GOT_OBJ_TYPE_COMMIT, &refs, repo);
+	if (err)
+		goto done;
+
+	err = got_object_id_str(&commit_id_str, commit_id);
+	if (err)
+		goto done;
+
+	err = get_tag_refname(&refname, tag_name);
+	if (err)
+		goto done;
+	if (strncmp("refs/tags/", tag_name, 10) == 0)
+		tag_name += 10;
+
+	err = got_ref_open(&ref, repo, refname, 0);
+	if (err == NULL) {
+		err = got_error(GOT_ERR_TAG_EXISTS);
+		goto done;
+	} else if (err->code != GOT_ERR_NOT_REF)
+		goto done;
+
+	if (tagmsg_arg == NULL) {
+		err = get_tag_message(&tagmsg, &tagmsg_path, commit_id_str,
+		    tag_name, got_repo_get_path(repo));
+		if (err) {
+			if (err->code != GOT_ERR_COMMIT_MSG_EMPTY &&
+			    tagmsg_path != NULL)
+				preserve_tagmsg = 1;
+			goto done;
+		}
+		/* Editor is done; we can now apply unveil(2) */
+		err = got_sigs_apply_unveil();
+		if (err)
+			goto done;
+		err = apply_unveil(got_repo_get_path(repo), 0, NULL);
+		if (err)
+			goto done;
+	}
+
+	err = got_object_tag_create(&tag_id, tag_name, commit_id,
+	    tagger, time(NULL), tagmsg ? tagmsg : tagmsg_arg, signer_id, repo,
+	    verbosity);
+	if (err) {
+		if (tagmsg_path)
+			preserve_tagmsg = 1;
+		goto done;
+	}
+
+	err = got_ref_alloc(&ref, refname, tag_id);
+	if (err) {
+		if (tagmsg_path)
+			preserve_tagmsg = 1;
+		goto done;
+	}
+
+	err = got_ref_write(ref, repo);
+	if (err) {
+		if (tagmsg_path)
+			preserve_tagmsg = 1;
+		goto done;
+	}
+
+	err = got_object_id_str(&tag_id_str, tag_id);
+	if (err) {
+		if (tagmsg_path)
+			preserve_tagmsg = 1;
+		goto done;
+	}
+	printf("Created tag %s\n", tag_id_str);
+done:
+	if (preserve_tagmsg) {
+		fprintf(stderr, "%s: tag message preserved in %s\n",
+		    getprogname(), tagmsg_path);
+	} else if (tagmsg_path && unlink(tagmsg_path) == -1 && err == NULL)
+		err = got_error_from_errno2("unlink", tagmsg_path);
+	free(tag_id_str);
+	if (ref)
+		got_ref_close(ref);
+	free(commit_id);
+	free(commit_id_str);
+	free(refname);
+	free(tagmsg);
+	free(tagmsg_path);
+	got_ref_list_free(&refs);
+	return err;
+}
+
+static const struct got_error *
+cmd_tag(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *repo_path = NULL, *commit_id_str = NULL;
+	char *gitconfig_path = NULL, *tagger = NULL;
+	char *allowed_signers = NULL, *revoked_signers = NULL;
+	const char *signer_id = NULL;
+	const char *tag_name = NULL, *commit_id_arg = NULL, *tagmsg = NULL;
+	int ch, do_list = 0, verify_tags = 0, verbosity = 0;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+	    "sendfd unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:lm:r:s:Vv")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_arg = optarg;
+			break;
+		case 'l':
+			do_list = 1;
+			break;
+		case 'm':
+			tagmsg = optarg;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL) {
+				error = got_error_from_errno2("realpath",
+				    optarg);
+				goto done;
+			}
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 's':
+			signer_id = optarg;
+			break;
+		case 'V':
+			verify_tags = 1;
+			break;
+		case 'v':
+			if (verbosity < 0)
+				verbosity = 0;
+			else if (verbosity < 3)
+				verbosity++;
+			break;
+		default:
+			usage_tag();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (do_list || verify_tags) {
+		if (commit_id_arg != NULL)
+			errx(1,
+			    "-c option can only be used when creating a tag");
+		if (tagmsg) {
+			if (do_list)
+				option_conflict('l', 'm');
+			else
+				option_conflict('V', 'm');
+		}
+		if (signer_id) {
+			if (do_list)
+				option_conflict('l', 's');
+			else
+				option_conflict('V', 's');
+		}
+		if (argc > 1)
+			usage_tag();
+	} else if (argc != 1)
+		usage_tag();
+
+	if (argc == 1)
+		tag_name = argv[0];
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	if (do_list || verify_tags) {
+		error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+		if (error != NULL)
+			goto done;
+		error = get_allowed_signers(&allowed_signers, repo, worktree);
+		if (error)
+			goto done;
+		error = get_revoked_signers(&revoked_signers, repo, worktree);
+		if (error)
+			goto done;
+		if (worktree) {
+			/* Release work tree lock. */
+			got_worktree_close(worktree);
+			worktree = NULL;
+		}
+
+		/*
+		 * Remove "cpath" promise unless needed for signature tmpfile
+		 * creation.
+		 */
+		if (verify_tags)
+		 	got_sigs_apply_unveil();
+		else {
+#ifndef PROFILE
+			if (pledge("stdio rpath wpath flock proc exec sendfd "
+			    "unveil", NULL) == -1)
+				err(1, "pledge");
+#endif
+		}
+		error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+		if (error)
+			goto done;
+		error = list_tags(repo, tag_name, verify_tags, allowed_signers,
+		    revoked_signers, verbosity);
+	} else {
+		error = get_gitconfig_path(&gitconfig_path);
+		if (error)
+			goto done;
+		error = got_repo_open(&repo, repo_path, gitconfig_path,
+		    pack_fds);
+		if (error != NULL)
+			goto done;
+
+		error = get_author(&tagger, repo, worktree);
+		if (error)
+			goto done;
+		if (signer_id == NULL)
+			signer_id = get_signer_id(repo, worktree);
+
+		if (tagmsg) {
+			if (signer_id) {
+				error = got_sigs_apply_unveil();
+				if (error)
+					goto done;
+			}
+			error = apply_unveil(got_repo_get_path(repo), 0, NULL);
+			if (error)
+				goto done;
+		}
+
+		if (commit_id_arg == NULL) {
+			struct got_reference *head_ref;
+			struct got_object_id *commit_id;
+			error = got_ref_open(&head_ref, repo,
+			    worktree ? got_worktree_get_head_ref_name(worktree)
+			    : GOT_REF_HEAD, 0);
+			if (error)
+				goto done;
+			error = got_ref_resolve(&commit_id, repo, head_ref);
+			got_ref_close(head_ref);
+			if (error)
+				goto done;
+			error = got_object_id_str(&commit_id_str, commit_id);
+			free(commit_id);
+			if (error)
+				goto done;
+		}
+
+		if (worktree) {
+			/* Release work tree lock. */
+			got_worktree_close(worktree);
+			worktree = NULL;
+		}
+
+		error = add_tag(repo, tagger, tag_name,
+		    commit_id_str ? commit_id_str : commit_id_arg, tagmsg,
+		    signer_id, verbosity);
+	}
+done:
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	free(cwd);
+	free(repo_path);
+	free(gitconfig_path);
+	free(commit_id_str);
+	free(tagger);
+	free(allowed_signers);
+	free(revoked_signers);
+	return error;
+}
+
+__dead static void
+usage_add(void)
+{
+	fprintf(stderr, "usage: %s add [-IR] path ...\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+add_progress(void *arg, unsigned char status, const char *path)
+{
+	while (path[0] == '/')
+		path++;
+	printf("%c  %s\n", status, path);
+	return NULL;
+}
+
+static const struct got_error *
+cmd_add(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL;
+	struct got_pathlist_head paths;
+	struct got_pathlist_entry *pe;
+	int ch, can_recurse = 0, no_ignores = 0;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "IR")) != -1) {
+		switch (ch) {
+		case 'I':
+			no_ignores = 1;
+			break;
+		case 'R':
+			can_recurse = 1;
+			break;
+		default:
+			usage_add();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage_add();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "add", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 1,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	if (!can_recurse) {
+		char *ondisk_path;
+		struct stat sb;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (asprintf(&ondisk_path, "%s/%s",
+			    got_worktree_get_root_path(worktree),
+			    pe->path) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+			if (lstat(ondisk_path, &sb) == -1) {
+				if (errno == ENOENT) {
+					free(ondisk_path);
+					continue;
+				}
+				error = got_error_from_errno2("lstat",
+				    ondisk_path);
+				free(ondisk_path);
+				goto done;
+			}
+			free(ondisk_path);
+			if (S_ISDIR(sb.st_mode)) {
+				error = got_error_msg(GOT_ERR_BAD_PATH,
+				    "adding directories requires -R option");
+				goto done;
+			}
+		}
+	}
+
+	error = got_worktree_schedule_add(worktree, &paths, add_progress,
+	    NULL, repo, no_ignores);
+done:
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_remove(void)
+{
+	fprintf(stderr, "usage: %s remove [-fkR] [-s status-codes] path ...\n",
+	    getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+print_remove_status(void *arg, unsigned char status,
+    unsigned char staged_status, const char *path)
+{
+	while (path[0] == '/')
+		path++;
+	if (status == GOT_STATUS_NONEXISTENT)
+		return NULL;
+	if (status == staged_status && (status == GOT_STATUS_DELETE))
+		status = GOT_STATUS_NO_CHANGE;
+	printf("%c%c %s\n", status, staged_status, path);
+	return NULL;
+}
+
+static const struct got_error *
+cmd_remove(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	const char *status_codes = NULL;
+	char *cwd = NULL;
+	struct got_pathlist_head paths;
+	struct got_pathlist_entry *pe;
+	int ch, delete_local_mods = 0, can_recurse = 0, keep_on_disk = 0, i;
+	int ignore_missing_paths = 0;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "fkRs:")) != -1) {
+		switch (ch) {
+		case 'f':
+			delete_local_mods = 1;
+			ignore_missing_paths = 1;
+			break;
+		case 'k':
+			keep_on_disk = 1;
+			break;
+		case 'R':
+			can_recurse = 1;
+			break;
+		case 's':
+			for (i = 0; optarg[i] != '\0'; i++) {
+				switch (optarg[i]) {
+				case GOT_STATUS_MODIFY:
+					delete_local_mods = 1;
+					break;
+				case GOT_STATUS_MISSING:
+					ignore_missing_paths = 1;
+					break;
+				default:
+					errx(1, "invalid status code '%c'",
+					    optarg[i]);
+				}
+			}
+			status_codes = optarg;
+			break;
+		default:
+			usage_remove();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage_remove();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "remove", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 1,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	if (!can_recurse) {
+		char *ondisk_path;
+		struct stat sb;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (asprintf(&ondisk_path, "%s/%s",
+			    got_worktree_get_root_path(worktree),
+			    pe->path) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+			if (lstat(ondisk_path, &sb) == -1) {
+				if (errno == ENOENT) {
+					free(ondisk_path);
+					continue;
+				}
+				error = got_error_from_errno2("lstat",
+				    ondisk_path);
+				free(ondisk_path);
+				goto done;
+			}
+			free(ondisk_path);
+			if (S_ISDIR(sb.st_mode)) {
+				error = got_error_msg(GOT_ERR_BAD_PATH,
+				    "removing directories requires -R option");
+				goto done;
+			}
+		}
+	}
+
+	error = got_worktree_schedule_delete(worktree, &paths,
+	    delete_local_mods, status_codes, print_remove_status, NULL,
+	    repo, keep_on_disk, ignore_missing_paths);
+done:
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_patch(void)
+{
+	fprintf(stderr, "usage: %s patch [-nR] [-c commit] [-p strip-count] "
+	    "[patchfile]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+patch_from_stdin(int *patchfd)
+{
+	const struct got_error *err = NULL;
+	ssize_t r;
+	char buf[BUFSIZ];
+	sig_t sighup, sigint, sigquit;
+
+	*patchfd = got_opentempfd();
+	if (*patchfd == -1)
+		return got_error_from_errno("got_opentempfd");
+
+	sighup = signal(SIGHUP, SIG_DFL);
+	sigint = signal(SIGINT, SIG_DFL);
+	sigquit = signal(SIGQUIT, SIG_DFL);
+
+	for (;;) {
+		r = read(0, buf, sizeof(buf));
+		if (r == -1) {
+			err = got_error_from_errno("read");
+			break;
+		}
+		if (r == 0)
+			break;
+		if (write(*patchfd, buf, r) == -1) {
+			err = got_error_from_errno("write");
+			break;
+		}
+	}
+
+	signal(SIGHUP, sighup);
+	signal(SIGINT, sigint);
+	signal(SIGQUIT, sigquit);
+
+	if (err == NULL && lseek(*patchfd, 0, SEEK_SET) == -1)
+		err = got_error_from_errno("lseek");
+
+	if (err != NULL) {
+		close(*patchfd);
+		*patchfd = -1;
+	}
+
+	return err;
+}
+
+struct got_patch_progress_arg {
+	int did_something;
+	int conflicts;
+	int rejects;
+};
+
+static const struct got_error *
+patch_progress(void *arg, const char *old, const char *new,
+    unsigned char status, const struct got_error *error, int old_from,
+    int old_lines, int new_from, int new_lines, int offset,
+    int ws_mangled, const struct got_error *hunk_err)
+{
+	const char *path = new == NULL ? old : new;
+	struct got_patch_progress_arg *a = arg;
+
+	while (*path == '/')
+		path++;
+
+	if (status != GOT_STATUS_NO_CHANGE &&
+	    status != 0 /* per-hunk progress */) {
+		printf("%c  %s\n", status, path);
+		a->did_something = 1;
+	}
+
+	if (hunk_err == NULL) {
+		if (status == GOT_STATUS_CANNOT_UPDATE)
+			a->rejects++;
+		else if (status == GOT_STATUS_CONFLICT)
+			a->conflicts++;
+	}
+
+	if (error != NULL)
+		fprintf(stderr, "%s: %s\n", getprogname(), error->msg);
+
+	if (offset != 0 || hunk_err != NULL || ws_mangled) {
+		printf("@@ -%d,%d +%d,%d @@ ", old_from,
+		    old_lines, new_from, new_lines);
+		if (hunk_err != NULL)
+			printf("%s\n", hunk_err->msg);
+		else if (offset != 0)
+			printf("applied with offset %d\n", offset);
+		else
+			printf("hunk contains mangled whitespace\n");
+	}
+
+	return NULL;
+}
+
+static void
+print_patch_progress_stats(struct got_patch_progress_arg *ppa)
+{
+	if (!ppa->did_something)
+		return;
+
+	if (ppa->conflicts > 0)
+		printf("Files with merge conflicts: %d\n", ppa->conflicts);
+
+	if (ppa->rejects > 0) {
+		printf("Files where patch failed to apply: %d\n",
+		    ppa->rejects);
+	}
+}
+
+static const struct got_error *
+cmd_patch(int argc, char *argv[])
+{
+	const struct got_error *error = NULL, *close_error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	struct got_reflist_head refs;
+	struct got_object_id *commit_id = NULL;
+	const char *commit_id_str = NULL;
+	struct stat sb;
+	const char *errstr;
+	char *cwd = NULL;
+	int ch, nop = 0, strip = -1, reverse = 0;
+	int patchfd;
+	int *pack_fds = NULL;
+	struct got_patch_progress_arg ppa;
+
+	TAILQ_INIT(&refs);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr proc exec sendfd flock "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:np:R")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_str = optarg;
+			break;
+		case 'n':
+			nop = 1;
+			break;
+		case 'p':
+			strip = strtonum(optarg, 0, INT_MAX, &errstr);
+			if (errstr != NULL)
+				errx(1, "pathname strip count is %s: %s",
+				     errstr, optarg);
+			break;
+		case 'R':
+			reverse = 1;
+			break;
+		default:
+			usage_patch();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0) {
+		error = patch_from_stdin(&patchfd);
+		if (error)
+			return error;
+	} else if (argc == 1) {
+		patchfd = open(argv[0], O_RDONLY);
+		if (patchfd == -1) {
+			error = got_error_from_errno2("open", argv[0]);
+			return error;
+		}
+		if (fstat(patchfd, &sb) == -1) {
+			error = got_error_from_errno2("fstat", argv[0]);
+			goto done;
+		}
+		if (!S_ISREG(sb.st_mode)) {
+			error = got_error_path(argv[0], GOT_ERR_BAD_FILETYPE);
+			goto done;
+		}
+	} else
+		usage_patch();
+
+	if ((cwd = getcwd(NULL, 0)) == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error != NULL)
+		goto done;
+
+	const char *repo_path = got_worktree_get_repo_path(worktree);
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error != NULL)
+		goto done;
+
+	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (error)
+		goto done;
+
+	if (commit_id_str != NULL) {
+		error = got_repo_match_object_id(&commit_id, NULL,
+		    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+		if (error)
+			goto done;
+	}
+
+	memset(&ppa, 0, sizeof(ppa));
+	error = got_patch(patchfd, worktree, repo, nop, strip, reverse,
+	    commit_id, patch_progress, &ppa, check_cancelled, NULL);
+	print_patch_progress_stats(&ppa);
+done:
+	got_ref_list_free(&refs);
+	free(commit_id);
+	if (repo) {
+		close_error = got_repo_close(repo);
+		if (error == NULL)
+			error = close_error;
+	}
+	if (worktree != NULL) {
+		close_error = got_worktree_close(worktree);
+		if (error == NULL)
+			error = close_error;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_revert(void)
+{
+	fprintf(stderr, "usage: %s revert [-pR] [-F response-script] path ...\n",
+	    getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+revert_progress(void *arg, unsigned char status, const char *path)
+{
+	if (status == GOT_STATUS_UNVERSIONED)
+		return NULL;
+
+	while (path[0] == '/')
+		path++;
+	printf("%c  %s\n", status, path);
+	return NULL;
+}
+
+struct choose_patch_arg {
+	FILE *patch_script_file;
+	const char *action;
+};
+
+static const struct got_error *
+show_change(unsigned char status, const char *path, FILE *patch_file, int n,
+    int nchanges, const char *action)
+{
+	const struct got_error *err;
+	char *line = NULL;
+	size_t linesize = 0;
+	ssize_t linelen;
+
+	switch (status) {
+	case GOT_STATUS_ADD:
+		printf("A  %s\n%s this addition? [y/n] ", path, action);
+		break;
+	case GOT_STATUS_DELETE:
+		printf("D  %s\n%s this deletion? [y/n] ", path, action);
+		break;
+	case GOT_STATUS_MODIFY:
+		if (fseek(patch_file, 0L, SEEK_SET) == -1)
+			return got_error_from_errno("fseek");
+		printf(GOT_COMMIT_SEP_STR);
+		while ((linelen = getline(&line, &linesize, patch_file)) != -1)
+			printf("%s", line);
+		if (linelen == -1 && ferror(patch_file)) {
+			err = got_error_from_errno("getline");
+			free(line);
+			return err;
+		}
+		free(line);
+		printf(GOT_COMMIT_SEP_STR);
+		printf("M  %s (change %d of %d)\n%s this change? [y/n/q] ",
+		    path, n, nchanges, action);
+		break;
+	default:
+		return got_error_path(path, GOT_ERR_FILE_STATUS);
+	}
+
+	fflush(stdout);
+	return NULL;
+}
+
+static const struct got_error *
+choose_patch(int *choice, void *arg, unsigned char status, const char *path,
+    FILE *patch_file, int n, int nchanges)
+{
+	const struct got_error *err = NULL;
+	char *line = NULL;
+	size_t linesize = 0;
+	ssize_t linelen;
+	int resp = ' ';
+	struct choose_patch_arg *a = arg;
+
+	*choice = GOT_PATCH_CHOICE_NONE;
+
+	if (a->patch_script_file) {
+		char *nl;
+		err = show_change(status, path, patch_file, n, nchanges,
+		    a->action);
+		if (err)
+			return err;
+		linelen = getline(&line, &linesize, a->patch_script_file);
+		if (linelen == -1) {
+			if (ferror(a->patch_script_file))
+				return got_error_from_errno("getline");
+			return NULL;
+		}
+		nl = strchr(line, '\n');
+		if (nl)
+			*nl = '\0';
+		if (strcmp(line, "y") == 0) {
+			*choice = GOT_PATCH_CHOICE_YES;
+			printf("y\n");
+		} else if (strcmp(line, "n") == 0) {
+			*choice = GOT_PATCH_CHOICE_NO;
+			printf("n\n");
+		} else if (strcmp(line, "q") == 0 &&
+		    status == GOT_STATUS_MODIFY) {
+			*choice = GOT_PATCH_CHOICE_QUIT;
+			printf("q\n");
+		} else
+			printf("invalid response '%s'\n", line);
+		free(line);
+		return NULL;
+	}
+
+	while (resp != 'y' && resp != 'n' && resp != 'q') {
+		err = show_change(status, path, patch_file, n, nchanges,
+		    a->action);
+		if (err)
+			return err;
+		resp = getchar();
+		if (resp == '\n')
+			resp = getchar();
+		if (status == GOT_STATUS_MODIFY) {
+			if (resp != 'y' && resp != 'n' && resp != 'q') {
+				printf("invalid response '%c'\n", resp);
+				resp = ' ';
+			}
+		} else if (resp != 'y' && resp != 'n') {
+				printf("invalid response '%c'\n", resp);
+				resp = ' ';
+		}
+	}
+
+	if (resp == 'y')
+		*choice = GOT_PATCH_CHOICE_YES;
+	else if (resp == 'n')
+		*choice = GOT_PATCH_CHOICE_NO;
+	else if (resp == 'q' && status == GOT_STATUS_MODIFY)
+		*choice = GOT_PATCH_CHOICE_QUIT;
+
+	return NULL;
+}
+
+struct wt_commitable_path_arg {
+	struct got_pathlist_head	*commit_paths;
+	int				*has_changes;
+};
+
+/*
+ * Shortcut work tree status callback to determine if the set of paths scanned
+ * has at least one versioned path that is being modified and, if not NULL, is
+ * in the arg->commit_paths list.  Set arg and return GOT_ERR_FILE_MODIFIED as
+ * soon as a path is passed with a status that satisfies this criteria.
+ */
+static const struct got_error *
+worktree_has_commitable_path(void *arg, unsigned char status,
+    unsigned char staged_status, const char *path,
+    struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
+    struct got_object_id *commit_id, int dirfd, const char *de_name)
+{
+	struct wt_commitable_path_arg *a = arg;
+
+	if (status == staged_status && (status == GOT_STATUS_DELETE))
+		status = GOT_STATUS_NO_CHANGE;
+
+	if (!(status == GOT_STATUS_NO_CHANGE ||
+	    status == GOT_STATUS_UNVERSIONED) ||
+	    staged_status != GOT_STATUS_NO_CHANGE) {
+		if (a->commit_paths != NULL) {
+			struct got_pathlist_entry *pe;
+
+			TAILQ_FOREACH(pe, a->commit_paths, entry) {
+				if (strncmp(path, pe->path,
+				    pe->path_len) == 0) {
+					*a->has_changes = 1;
+					break;
+				}
+			}
+		} else
+			*a->has_changes = 1;
+
+		if (*a->has_changes)
+			return got_error(GOT_ERR_FILE_MODIFIED);
+	}
+
+	return NULL;
+}
+
+/*
+ * Check that the changeset of the commit identified by id is
+ * comprised of at least one modified path that is being committed.
+ */
+static const struct got_error *
+commit_path_changed_in_worktree(struct wt_commitable_path_arg *wcpa,
+    struct got_object_id *id, struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error		*err;
+	struct got_pathlist_head	 paths;
+	struct got_commit_object	*commit = NULL, *pcommit = NULL;
+	struct got_tree_object		*tree = NULL, *ptree = NULL;
+	struct got_object_qid		*pid;
+
+	TAILQ_INIT(&paths);
+
+	err = got_object_open_as_commit(&commit, repo, id);
+	if (err)
+		goto done;
+
+	err = got_object_open_as_tree(&tree, repo,
+	    got_object_commit_get_tree_id(commit));
+	if (err)
+		goto done;
+
+	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
+	if (pid != NULL) {
+		err = got_object_open_as_commit(&pcommit, repo, &pid->id);
+		if (err)
+			goto done;
+
+		err = got_object_open_as_tree(&ptree, repo,
+		    got_object_commit_get_tree_id(pcommit));
+		if (err)
+			goto done;
+	}
+
+	err = got_diff_tree(ptree, tree, NULL, NULL, -1, -1, "", "", repo,
+	    got_diff_tree_collect_changed_paths, &paths, 0);
+	if (err)
+		goto done;
+
+	err = got_worktree_status(worktree, &paths, repo, 0,
+	    worktree_has_commitable_path, wcpa, check_cancelled, NULL);
+	if (err && err->code == GOT_ERR_FILE_MODIFIED) {
+		/*
+		 * At least one changed path in the referenced commit is
+		 * modified in the work tree, that's all we need to know!
+		 */
+		err = NULL;
+	}
+
+done:
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
+	if (commit)
+		got_object_commit_close(commit);
+	if (pcommit)
+		got_object_commit_close(pcommit);
+	if (tree)
+		got_object_tree_close(tree);
+	if (ptree)
+		got_object_tree_close(ptree);
+	return err;
+}
+
+/*
+ * Remove any "logmsg" reference comprised entirely of paths that have
+ * been reverted in this work tree. If any path in the logmsg ref changeset
+ * remains in a changed state in the worktree, do not remove the reference.
+ */
+static const struct got_error *
+rm_logmsg_ref(struct got_worktree *worktree, struct got_repository *repo)
+{
+	const struct got_error		*err;
+	struct got_reflist_head		 refs;
+	struct got_reflist_entry	*re;
+	struct got_commit_object	*commit = NULL;
+	struct got_object_id		*commit_id = NULL;
+	struct wt_commitable_path_arg	 wcpa;
+	char				*uuidstr = NULL;
+
+	TAILQ_INIT(&refs);
+
+	err = got_worktree_get_uuid(&uuidstr, worktree);
+	if (err)
+		goto done;
+
+	err = got_ref_list(&refs, repo, "refs/got/worktree",
+	    got_ref_cmp_by_name, repo);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		const char	*refname;
+		int		 has_changes = 0;
+
+		refname = got_ref_get_name(re->ref);
+
+		if (!strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
+		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN))
+			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
+		else if (!strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
+		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN))
+			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
+		else
+			continue;
+
+		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
+			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
+		else
+			continue;
+
+		err = got_repo_match_object_id(&commit_id, NULL, refname,
+		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
+		if (err)
+			goto done;
+
+		err = got_object_open_as_commit(&commit, repo, commit_id);
+		if (err)
+			goto done;
+
+		wcpa.commit_paths = NULL;
+		wcpa.has_changes = &has_changes;
+
+		err = commit_path_changed_in_worktree(&wcpa, commit_id,
+		    worktree, repo);
+		if (err)
+			goto done;
+
+		if (!has_changes) {
+			err = got_ref_delete(re->ref, repo);
+			if (err)
+				goto done;
+		}
+
+		got_object_commit_close(commit);
+		commit = NULL;
+		free(commit_id);
+		commit_id = NULL;
+	}
+
+done:
+	free(uuidstr);
+	free(commit_id);
+	got_ref_list_free(&refs);
+	if (commit)
+		got_object_commit_close(commit);
+	return err;
+}
+
+static const struct got_error *
+cmd_revert(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	char *cwd = NULL, *path = NULL;
+	struct got_pathlist_head paths;
+	struct got_pathlist_entry *pe;
+	int ch, can_recurse = 0, pflag = 0;
+	FILE *patch_script_file = NULL;
+	const char *patch_script_path = NULL;
+	struct choose_patch_arg cpa;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "F:pR")) != -1) {
+		switch (ch) {
+		case 'F':
+			patch_script_path = optarg;
+			break;
+		case 'p':
+			pflag = 1;
+			break;
+		case 'R':
+			can_recurse = 1;
+			break;
+		default:
+			usage_revert();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1)
+		usage_revert();
+	if (patch_script_path && !pflag)
+		errx(1, "-F option can only be used together with -p option");
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "revert", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (patch_script_path) {
+		patch_script_file = fopen(patch_script_path, "re");
+		if (patch_script_file == NULL) {
+			error = got_error_from_errno2("fopen",
+			    patch_script_path);
+			goto done;
+		}
+	}
+
+	/*
+	 * XXX "c" perm needed on repo dir to delete merge references.
+	 */
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	if (!can_recurse) {
+		char *ondisk_path;
+		struct stat sb;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (asprintf(&ondisk_path, "%s/%s",
+			    got_worktree_get_root_path(worktree),
+			    pe->path) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+			if (lstat(ondisk_path, &sb) == -1) {
+				if (errno == ENOENT) {
+					free(ondisk_path);
+					continue;
+				}
+				error = got_error_from_errno2("lstat",
+				    ondisk_path);
+				free(ondisk_path);
+				goto done;
+			}
+			free(ondisk_path);
+			if (S_ISDIR(sb.st_mode)) {
+				error = got_error_msg(GOT_ERR_BAD_PATH,
+				    "reverting directories requires -R option");
+				goto done;
+			}
+		}
+	}
+
+	cpa.patch_script_file = patch_script_file;
+	cpa.action = "revert";
+	error = got_worktree_revert(worktree, &paths, revert_progress, NULL,
+	    pflag ? choose_patch : NULL, &cpa, repo);
+
+	error = rm_logmsg_ref(worktree, repo);
+done:
+	if (patch_script_file && fclose(patch_script_file) == EOF &&
+	    error == NULL)
+		error = got_error_from_errno2("fclose", patch_script_path);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(path);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_commit(void)
+{
+	fprintf(stderr, "usage: %s commit [-CNnS] [-A author] [-F path] "
+	    "[-m message] [path ...]\n", getprogname());
+	exit(1);
+}
+
+struct collect_commit_logmsg_arg {
+	const char *cmdline_log;
+	const char *prepared_log;
+	const char *merged_log;
+	int non_interactive;
+	const char *editor;
+	const char *worktree_path;
+	const char *branch_name;
+	const char *repo_path;
+	char *logmsg_path;
+
+};
+
+static const struct got_error *
+read_prepared_logmsg(char **logmsg, const char *path)
+{
+	const struct got_error *err = NULL;
+	FILE *f = NULL;
+	struct stat sb;
+	size_t r;
+
+	*logmsg = NULL;
+	memset(&sb, 0, sizeof(sb));
+
+	f = fopen(path, "re");
+	if (f == NULL)
+		return got_error_from_errno2("fopen", path);
+
+	if (fstat(fileno(f), &sb) == -1) {
+		err = got_error_from_errno2("fstat", path);
+		goto done;
+	}
+	if (sb.st_size == 0) {
+		err = got_error(GOT_ERR_COMMIT_MSG_EMPTY);
+		goto done;
+	}
+
+	*logmsg = malloc(sb.st_size + 1);
+	if (*logmsg == NULL) {
+		err = got_error_from_errno("malloc");
+		goto done;
+	}
+
+	r = fread(*logmsg, 1, sb.st_size, f);
+	if (r != sb.st_size) {
+		if (ferror(f))
+			err = got_error_from_errno2("fread", path);
+		else
+			err = got_error(GOT_ERR_IO);
+		goto done;
+	}
+	(*logmsg)[sb.st_size] = '\0';
+done:
+	if (fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno2("fclose", path);
+	if (err) {
+		free(*logmsg);
+		*logmsg = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+collect_commit_logmsg(struct got_pathlist_head *commitable_paths,
+    const char *diff_path, char **logmsg, void *arg)
+{
+	char *initial_content = NULL;
+	struct got_pathlist_entry *pe;
+	const struct got_error *err = NULL;
+	char *template = NULL;
+	char *prepared_msg = NULL, *merged_msg = NULL;
+	struct collect_commit_logmsg_arg *a = arg;
+	int initial_content_len;
+	int fd = -1;
+	size_t len;
+
+	/* if a message was specified on the command line, just use it */
+	if (a->cmdline_log != NULL && *a->cmdline_log != '\0') {
+		len = strlen(a->cmdline_log) + 1;
+		*logmsg = malloc(len + 1);
+		if (*logmsg == NULL)
+			return got_error_from_errno("malloc");
+		strlcpy(*logmsg, a->cmdline_log, len);
+		return NULL;
+	} else if (a->prepared_log != NULL && a->non_interactive)
+		return read_prepared_logmsg(logmsg, a->prepared_log);
+
+	if (asprintf(&template, "%s/logmsg", a->worktree_path) == -1)
+		return got_error_from_errno("asprintf");
+
+	err = got_opentemp_named_fd(&a->logmsg_path, &fd, template, "");
+	if (err)
+		goto done;
+
+	if (a->prepared_log) {
+		err = read_prepared_logmsg(&prepared_msg, a->prepared_log);
+		if (err)
+			goto done;
+	} else if (a->merged_log) {
+		err = read_prepared_logmsg(&merged_msg, a->merged_log);
+		if (err)
+			goto done;
+	}
+
+	initial_content_len = asprintf(&initial_content,
+	    "%s%s\n# changes to be committed on branch %s:\n",
+	    prepared_msg ? prepared_msg : "",
+	    merged_msg ? merged_msg : "", a->branch_name);
+	if (initial_content_len == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	if (write(fd, initial_content, initial_content_len) == -1) {
+		err = got_error_from_errno2("write", a->logmsg_path);
+		goto done;
+	}
+
+	TAILQ_FOREACH(pe, commitable_paths, entry) {
+		struct got_commitable *ct = pe->data;
+		dprintf(fd, "#  %c  %s\n",
+		    got_commitable_get_status(ct),
+		    got_commitable_get_path(ct));
+	}
+
+	if (diff_path) {
+		dprintf(fd, "# detailed changes can be viewed in %s\n",
+		    diff_path);
+	}
+
+	if (close(fd) == -1) {
+		err = got_error_from_errno2("close", a->logmsg_path);
+		goto done;
+	}
+	fd = -1;
+
+	err = edit_logmsg(logmsg, a->editor, a->logmsg_path, initial_content,
+	    initial_content_len, a->prepared_log ? 0 : 1);
+done:
+	free(initial_content);
+	free(template);
+	free(prepared_msg);
+	free(merged_msg);
+
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno2("close", a->logmsg_path);
+
+	/* Editor is done; we can now apply unveil(2) */
+	if (err == NULL)
+		err = apply_unveil(a->repo_path, 0, a->worktree_path);
+	if (err) {
+		free(*logmsg);
+		*logmsg = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+cat_logmsg(FILE *f, struct got_commit_object *commit, const char *idstr,
+    const char *type, int has_content)
+{
+	const struct got_error	*err = NULL;
+	char			*logmsg = NULL;
+
+	err = got_object_commit_get_logmsg(&logmsg, commit);
+	if (err)
+		return err;
+
+	if (fprintf(f, "%s# log message of %s commit %s:%s",
+	    has_content ? "\n" : "", type, idstr, logmsg) < 0)
+		err = got_ferror(f, GOT_ERR_IO);
+
+	free(logmsg);
+	return err;
+}
+
+/*
+ * Lookup "logmsg" references of backed-out and cherrypicked commits
+ * belonging to the current work tree. If found, and the worktree has
+ * at least one modified file that was changed in the referenced commit,
+ * add its log message to a new temporary file at *logmsg_path.
+ * Add all refs found to matched_refs to be scheduled for removal on
+ * successful commit.
+ */
+static const struct got_error *
+lookup_logmsg_ref(char **logmsg_path, struct got_pathlist_head *paths,
+    struct got_reflist_head *matched_refs, struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error		*err;
+	struct got_commit_object	*commit = NULL;
+	struct got_object_id		*id = NULL;
+	struct got_reflist_head		 refs;
+	struct got_reflist_entry	*re, *re_match;
+	FILE				*f = NULL;
+	char				*uuidstr = NULL;
+	int				 added_logmsg = 0;
+
+	TAILQ_INIT(&refs);
+
+	*logmsg_path = NULL;
+
+	err = got_worktree_get_uuid(&uuidstr, worktree);
+	if (err)
+		goto done;
+
+	err = got_ref_list(&refs, repo, "refs/got/worktree",
+	    got_ref_cmp_by_name, repo);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		const char			*refname, *type;
+		struct wt_commitable_path_arg	 wcpa;
+		int				 add_logmsg = 0;
+
+		refname = got_ref_get_name(re->ref);
+
+		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
+		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
+			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
+			type = "cherrypicked";
+		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
+		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
+			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
+			type = "backed-out";
+		} else
+			continue;
+
+		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) == 0)
+			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
+		else
+			continue;
+
+		err = got_repo_match_object_id(&id, NULL, refname,
+		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
+		if (err)
+			goto done;
+
+		err = got_object_open_as_commit(&commit, repo, id);
+		if (err)
+			goto done;
+
+		wcpa.commit_paths = paths;
+		wcpa.has_changes = &add_logmsg;
+
+		err = commit_path_changed_in_worktree(&wcpa, id,
+		    worktree, repo);
+		if (err)
+			goto done;
+
+		if (add_logmsg) {
+			if (f == NULL) {
+				err = got_opentemp_named(logmsg_path, &f,
+				    "got-commit-logmsg", "");
+				if (err)
+					goto done;
+			}
+			err = cat_logmsg(f, commit, refname, type,
+			    added_logmsg);
+			if (err)
+				goto done;
+			if (!added_logmsg)
+				++added_logmsg;
+
+			err = got_reflist_entry_dup(&re_match, re);
+			if (err)
+				goto done;
+			TAILQ_INSERT_HEAD(matched_refs, re_match, entry);
+		}
+
+		got_object_commit_close(commit);
+		commit = NULL;
+		free(id);
+		id = NULL;
+	}
+
+done:
+	free(id);
+	free(uuidstr);
+	got_ref_list_free(&refs);
+	if (commit)
+		got_object_commit_close(commit);
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (!added_logmsg) {
+		if (*logmsg_path && unlink(*logmsg_path) != 0 && err == NULL)
+			err = got_error_from_errno2("unlink", *logmsg_path);
+		*logmsg_path = NULL;
+	}
+	return err;
+}
+
+static const struct got_error *
+cmd_commit(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	char *cwd = NULL, *id_str = NULL;
+	struct got_object_id *id = NULL;
+	const char *logmsg = NULL;
+	char *prepared_logmsg = NULL, *merged_logmsg = NULL;
+	struct collect_commit_logmsg_arg cl_arg;
+	const char *author = NULL;
+	char *gitconfig_path = NULL, *editor = NULL, *committer = NULL;
+	int ch, rebase_in_progress, histedit_in_progress, preserve_logmsg = 0;
+	int allow_bad_symlinks = 0, non_interactive = 0, merge_in_progress = 0;
+	int show_diff = 1, commit_conflicts = 0;
+	struct got_pathlist_head paths;
+	struct got_reflist_head refs;
+	struct got_reflist_entry *re;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&paths);
+	cl_arg.logmsg_path = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "A:CF:m:NnS")) != -1) {
+		switch (ch) {
+		case 'A':
+			author = optarg;
+			error = valid_author(author);
+			if (error)
+				return error;
+			break;
+		case 'C':
+			commit_conflicts = 1;
+			break;
+		case 'F':
+			if (logmsg != NULL)
+				option_conflict('F', 'm');
+			prepared_logmsg = realpath(optarg, NULL);
+			if (prepared_logmsg == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			break;
+		case 'm':
+			if (prepared_logmsg)
+				option_conflict('m', 'F');
+			logmsg = optarg;
+			break;
+		case 'N':
+			non_interactive = 1;
+			break;
+		case 'n':
+			show_diff = 0;
+			break;
+		case 'S':
+			allow_bad_symlinks = 1;
+			break;
+		default:
+			usage_commit();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "commit", cwd);
+		goto done;
+	}
+
+	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
+	if (error)
+		goto done;
+	if (rebase_in_progress) {
+		error = got_error(GOT_ERR_REBASING);
+		goto done;
+	}
+
+	error = got_worktree_histedit_in_progress(&histedit_in_progress,
+	    worktree);
+	if (error)
+		goto done;
+
+	error = get_gitconfig_path(&gitconfig_path);
+	if (error)
+		goto done;
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    gitconfig_path, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_merge_in_progress(&merge_in_progress, worktree, repo);
+	if (error)
+		goto done;
+	if (merge_in_progress) {
+		error = got_error(GOT_ERR_MERGE_BUSY);
+		goto done;
+	}
+
+	error = get_author(&committer, repo, worktree);
+	if (error)
+		goto done;
+
+	if (author == NULL)
+		author = committer;
+
+	/*
+	 * unveil(2) traverses exec(2); if an editor is used we have
+	 * to apply unveil after the log message has been written.
+	 */
+	if (logmsg == NULL || strlen(logmsg) == 0)
+		error = get_editor(&editor);
+	else
+		error = apply_unveil(got_repo_get_path(repo), 0,
+		    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	if (prepared_logmsg == NULL) {
+		error = lookup_logmsg_ref(&merged_logmsg,
+		    argc > 0 ? &paths : NULL, &refs, worktree, repo);
+		if (error)
+			goto done;
+	}
+
+	cl_arg.editor = editor;
+	cl_arg.cmdline_log = logmsg;
+	cl_arg.prepared_log = prepared_logmsg;
+	cl_arg.merged_log = merged_logmsg;
+	cl_arg.non_interactive = non_interactive;
+	cl_arg.worktree_path = got_worktree_get_root_path(worktree);
+	cl_arg.branch_name = got_worktree_get_head_ref_name(worktree);
+	if (!histedit_in_progress) {
+		if (strncmp(cl_arg.branch_name, "refs/heads/", 11) != 0) {
+			error = got_error(GOT_ERR_COMMIT_BRANCH);
+			goto done;
+		}
+		cl_arg.branch_name += 11;
+	}
+	cl_arg.repo_path = got_repo_get_path(repo);
+	error = got_worktree_commit(&id, worktree, &paths, author, committer,
+	    allow_bad_symlinks, show_diff, commit_conflicts,
+	    collect_commit_logmsg, &cl_arg, print_status, NULL, repo);
+	if (error) {
+		if (error->code != GOT_ERR_COMMIT_MSG_EMPTY &&
+		    cl_arg.logmsg_path != NULL)
+			preserve_logmsg = 1;
+		goto done;
+	}
+
+	error = got_object_id_str(&id_str, id);
+	if (error)
+		goto done;
+	printf("Created commit %s\n", id_str);
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		error = got_ref_delete(re->ref, repo);
+		if (error)
+			goto done;
+	}
+
+done:
+	if (preserve_logmsg) {
+		fprintf(stderr, "%s: log message preserved in %s\n",
+		    getprogname(), cl_arg.logmsg_path);
+	} else if (cl_arg.logmsg_path && unlink(cl_arg.logmsg_path) == -1 &&
+	    error == NULL)
+		error = got_error_from_errno2("unlink", cl_arg.logmsg_path);
+	free(cl_arg.logmsg_path);
+	if (merged_logmsg && unlink(merged_logmsg) == -1 && error == NULL)
+		error = got_error_from_errno2("unlink", merged_logmsg);
+	free(merged_logmsg);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_ref_list_free(&refs);
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	free(id_str);
+	free(gitconfig_path);
+	free(editor);
+	free(committer);
+	free(prepared_logmsg);
+	return error;
+}
+
+__dead static void
+usage_send(void)
+{
+	fprintf(stderr, "usage: %s send [-afqTv] [-b branch] [-d branch] "
+	    "[-r repository-path] [-t tag] [remote-repository]\n",
+	    getprogname());
+	exit(1);
+}
+
+static void
+print_load_info(int print_colored, int print_found, int print_trees,
+    int ncolored, int nfound, int ntrees)
+{
+	if (print_colored) {
+		printf("%d commit%s colored", ncolored,
+		    ncolored == 1 ? "" : "s");
+	}
+	if (print_found) {
+		printf("%s%d object%s found",
+		    ncolored > 0 ? "; " : "",
+		    nfound, nfound == 1 ? "" : "s");
+	}
+	if (print_trees) {
+		printf("; %d tree%s scanned", ntrees,
+		    ntrees == 1 ? "" : "s");
+	}
+}
+
+struct got_send_progress_arg {
+	char last_scaled_packsize[FMT_SCALED_STRSIZE];
+	int verbosity;
+	int last_ncolored;
+	int last_nfound;
+	int last_ntrees;
+	int loading_done;
+	int last_ncommits;
+	int last_nobj_total;
+	int last_p_deltify;
+	int last_p_written;
+	int last_p_sent;
+	int printed_something;
+	int sent_something;
+	struct got_pathlist_head *delete_branches;
+};
+
+static const struct got_error *
+send_progress(void *arg, int ncolored, int nfound, int ntrees,
+    off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
+    int nobj_written, off_t bytes_sent, const char *refname,
+    const char *errmsg, int success)
+{
+	struct got_send_progress_arg *a = arg;
+	char scaled_packsize[FMT_SCALED_STRSIZE];
+	char scaled_sent[FMT_SCALED_STRSIZE];
+	int p_deltify = 0, p_written = 0, p_sent = 0;
+	int print_colored = 0, print_found = 0, print_trees = 0;
+	int print_searching = 0, print_total = 0;
+	int print_deltify = 0, print_written = 0, print_sent = 0;
+
+	if (a->verbosity < 0)
+		return NULL;
+
+	if (refname) {
+		const char *status = success ? "accepted" : "rejected";
+
+		if (success) {
+			struct got_pathlist_entry *pe;
+			TAILQ_FOREACH(pe, a->delete_branches, entry) {
+				const char *branchname = pe->path;
+				if (got_path_cmp(branchname, refname,
+				    strlen(branchname), strlen(refname)) == 0) {
+					status = "deleted";
+					a->sent_something = 1;
+					break;
+				}
+			}
+		}
+
+		if (a->printed_something)
+			putchar('\n');
+		printf("Server has %s %s", status, refname);
+		if (errmsg)
+			printf(": %s", errmsg);
+		a->printed_something = 1;
+		return NULL;
+	}
+
+	if (a->last_ncolored != ncolored) {
+		print_colored = 1;
+		a->last_ncolored = ncolored;
+	}
+
+	if (a->last_nfound != nfound) {
+		print_colored = 1;
+		print_found = 1;
+		a->last_nfound = nfound;
+	}
+
+	if (a->last_ntrees != ntrees) {
+		print_colored = 1;
+		print_found = 1;
+		print_trees = 1;
+		a->last_ntrees = ntrees;
+	}
+
+	if ((print_colored || print_found || print_trees) &&
+	    !a->loading_done) {
+		printf("\r");
+		print_load_info(print_colored, print_found, print_trees,
+		    ncolored, nfound, ntrees);
+		a->printed_something = 1;
+		fflush(stdout);
+		return NULL;
+	} else if (!a->loading_done) {
+		printf("\r");
+		print_load_info(1, 1, 1, ncolored, nfound, ntrees);
+		printf("\n");
+		a->loading_done = 1;
+	}
+
+	if (fmt_scaled(packfile_size, scaled_packsize) == -1)
+		return got_error_from_errno("fmt_scaled");
+	if (fmt_scaled(bytes_sent, scaled_sent) == -1)
+		return got_error_from_errno("fmt_scaled");
+
+	if (a->last_ncommits != ncommits) {
+		print_searching = 1;
+		a->last_ncommits = ncommits;
+	}
+
+	if (a->last_nobj_total != nobj_total) {
+		print_searching = 1;
+		print_total = 1;
+		a->last_nobj_total = nobj_total;
+	}
+
+	if (packfile_size > 0 && (a->last_scaled_packsize[0] == '\0' ||
+	    strcmp(scaled_packsize, a->last_scaled_packsize)) != 0) {
+		if (strlcpy(a->last_scaled_packsize, scaled_packsize,
+		    FMT_SCALED_STRSIZE) >= FMT_SCALED_STRSIZE)
+			return got_error(GOT_ERR_NO_SPACE);
+	}
+
+	if (nobj_deltify > 0 || nobj_written > 0) {
+		if (nobj_deltify > 0) {
+			p_deltify = (nobj_deltify * 100) / nobj_total;
+			if (p_deltify != a->last_p_deltify) {
+				a->last_p_deltify = p_deltify;
+				print_searching = 1;
+				print_total = 1;
+				print_deltify = 1;
+			}
+		}
+		if (nobj_written > 0) {
+			p_written = (nobj_written * 100) / nobj_total;
+			if (p_written != a->last_p_written) {
+				a->last_p_written = p_written;
+				print_searching = 1;
+				print_total = 1;
+				print_deltify = 1;
+				print_written = 1;
+			}
+		}
+	}
+
+	if (bytes_sent > 0) {
+		p_sent = (bytes_sent * 100) / packfile_size;
+		if (p_sent != a->last_p_sent) {
+			a->last_p_sent = p_sent;
+			print_searching = 1;
+			print_total = 1;
+			print_deltify = 1;
+			print_written = 1;
+			print_sent = 1;
+		}
+		a->sent_something = 1;
+	}
+
+	if (print_searching || print_total || print_deltify || print_written ||
+	    print_sent)
+		printf("\r");
+	if (print_searching)
+		printf("packing %d reference%s", ncommits,
+		    ncommits == 1 ? "" : "s");
+	if (print_total)
+		printf("; %d object%s", nobj_total,
+		    nobj_total == 1 ? "" : "s");
+	if (print_deltify)
+		printf("; deltify: %d%%", p_deltify);
+	if (print_sent)
+		printf("; uploading pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
+		    scaled_packsize, p_sent);
+	else if (print_written)
+		printf("; writing pack: %*s %d%%", FMT_SCALED_STRSIZE - 2,
+		    scaled_packsize, p_written);
+	if (print_searching || print_total || print_deltify ||
+	    print_written || print_sent) {
+		a->printed_something = 1;
+		fflush(stdout);
+	}
+	return NULL;
+}
+
+static const struct got_error *
+cmd_send(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	char *cwd = NULL, *repo_path = NULL;
+	const char *remote_name;
+	char *proto = NULL, *host = NULL, *port = NULL;
+	char *repo_name = NULL, *server_path = NULL;
+	const struct got_remote_repo *remotes, *remote = NULL;
+	int nremotes, nbranches = 0, ndelete_branches = 0;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	const struct got_gotconfig *repo_conf = NULL, *worktree_conf = NULL;
+	struct got_pathlist_head branches;
+	struct got_pathlist_head tags;
+	struct got_reflist_head all_branches;
+	struct got_reflist_head all_tags;
+	struct got_pathlist_head delete_args;
+	struct got_pathlist_head delete_branches;
+	struct got_reflist_entry *re;
+	struct got_pathlist_entry *pe;
+	int i, ch, sendfd = -1, sendstatus;
+	pid_t sendpid = -1;
+	struct got_send_progress_arg spa;
+	int verbosity = 0, overwrite_refs = 0;
+	int send_all_branches = 0, send_all_tags = 0;
+	struct got_reference *ref = NULL;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&branches);
+	TAILQ_INIT(&tags);
+	TAILQ_INIT(&all_branches);
+	TAILQ_INIT(&all_tags);
+	TAILQ_INIT(&delete_args);
+	TAILQ_INIT(&delete_branches);
+
+	while ((ch = getopt(argc, argv, "ab:d:fqr:Tt:v")) != -1) {
+		switch (ch) {
+		case 'a':
+			send_all_branches = 1;
+			break;
+		case 'b':
+			error = got_pathlist_append(&branches, optarg, NULL);
+			if (error)
+				return error;
+			nbranches++;
+			break;
+		case 'd':
+			error = got_pathlist_append(&delete_args, optarg, NULL);
+			if (error)
+				return error;
+			break;
+		case 'f':
+			overwrite_refs = 1;
+			break;
+		case 'q':
+			verbosity = -1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		case 'T':
+			send_all_tags = 1;
+			break;
+		case 't':
+			error = got_pathlist_append(&tags, optarg, NULL);
+			if (error)
+				return error;
+			break;
+		case 'v':
+			if (verbosity < 0)
+				verbosity = 0;
+			else if (verbosity < 3)
+				verbosity++;
+			break;
+		default:
+			usage_send();
+			/* NOTREACHED */
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (send_all_branches && !TAILQ_EMPTY(&branches))
+		option_conflict('a', 'b');
+	if (send_all_tags && !TAILQ_EMPTY(&tags))
+		option_conflict('T', 't');
+
+
+	if (argc == 0)
+		remote_name = GOT_SEND_DEFAULT_REMOTE_NAME;
+	else if (argc == 1)
+		remote_name = argv[0];
+	else
+		usage_send();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		else
+			error = NULL;
+		if (worktree) {
+			repo_path =
+			    strdup(got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL)
+				error = got_error_from_errno("strdup");
+			if (error)
+				goto done;
+		} else {
+			repo_path = strdup(cwd);
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		}
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	if (error)
+		goto done;
+
+	if (worktree) {
+		worktree_conf = got_worktree_get_gotconfig(worktree);
+		if (worktree_conf) {
+			got_gotconfig_get_remotes(&nremotes, &remotes,
+			    worktree_conf);
+			for (i = 0; i < nremotes; i++) {
+				if (strcmp(remotes[i].name, remote_name) == 0) {
+					remote = &remotes[i];
+					break;
+				}
+			}
+		}
+	}
+	if (remote == NULL) {
+		repo_conf = got_repo_get_gotconfig(repo);
+		if (repo_conf) {
+			got_gotconfig_get_remotes(&nremotes, &remotes,
+			    repo_conf);
+			for (i = 0; i < nremotes; i++) {
+				if (strcmp(remotes[i].name, remote_name) == 0) {
+					remote = &remotes[i];
+					break;
+				}
+			}
+		}
+	}
+	if (remote == NULL) {
+		got_repo_get_gitconfig_remotes(&nremotes, &remotes, repo);
+		for (i = 0; i < nremotes; i++) {
+			if (strcmp(remotes[i].name, remote_name) == 0) {
+				remote = &remotes[i];
+				break;
+			}
+		}
+	}
+	if (remote == NULL) {
+		error = got_error_path(remote_name, GOT_ERR_NO_REMOTE);
+		goto done;
+	}
+
+	error = got_dial_parse_uri(&proto, &host, &port, &server_path,
+	    &repo_name, remote->send_url);
+	if (error)
+		goto done;
+
+	if (strcmp(proto, "git") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd dns inet unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "git+ssh") == 0 ||
+	    strcmp(proto, "ssh") == 0) {
+#ifndef PROFILE
+		if (pledge("stdio rpath wpath cpath fattr flock proc exec "
+		    "sendfd unveil", NULL) == -1)
+			err(1, "pledge");
+#endif
+	} else if (strcmp(proto, "http") == 0 ||
+	    strcmp(proto, "git+http") == 0) {
+		error = got_error_path(proto, GOT_ERR_NOT_IMPL);
+		goto done;
+	} else {
+		error = got_error_path(proto, GOT_ERR_BAD_PROTO);
+		goto done;
+	}
+
+	error = got_dial_apply_unveil(proto);
+	if (error)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0, NULL);
+	if (error)
+		goto done;
+
+	if (send_all_branches) {
+		error = got_ref_list(&all_branches, repo, "refs/heads",
+		    got_ref_cmp_by_name, NULL);
+		if (error)
+			goto done;
+		TAILQ_FOREACH(re, &all_branches, entry) {
+			const char *branchname = got_ref_get_name(re->ref);
+			error = got_pathlist_append(&branches,
+			    branchname, NULL);
+			if (error)
+				goto done;
+			nbranches++;
+		}
+	} else if (nbranches == 0) {
+		for (i = 0; i < remote->nsend_branches; i++) {
+			error = got_pathlist_append(&branches,
+			    remote->send_branches[i], NULL);
+			if (error)
+				goto done;
+		}
+	}
+
+	if (send_all_tags) {
+		error = got_ref_list(&all_tags, repo, "refs/tags",
+		    got_ref_cmp_by_name, NULL);
+		if (error)
+			goto done;
+		TAILQ_FOREACH(re, &all_tags, entry) {
+			const char *tagname = got_ref_get_name(re->ref);
+			error = got_pathlist_append(&tags,
+			    tagname, NULL);
+			if (error)
+				goto done;
+		}
+	}
+
+	/*
+	 * To prevent accidents only branches in refs/heads/ can be deleted
+	 * with 'got send -d'.
+	 * Deleting anything else requires local repository access or Git.
+	 */
+	TAILQ_FOREACH(pe, &delete_args, entry) {
+		const char *branchname = pe->path;
+		char *s;
+		struct got_pathlist_entry *new;
+		if (strncmp(branchname, "refs/heads/", 11) == 0) {
+			s = strdup(branchname);
+			if (s == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+		} else {
+			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
+				error = got_error_from_errno("asprintf");
+				goto done;
+			}
+		}
+		error = got_pathlist_insert(&new, &delete_branches, s, NULL);
+		if (error || new == NULL /* duplicate */)
+			free(s);
+		if (error)
+			goto done;
+		ndelete_branches++;
+	}
+
+	if (nbranches == 0 && ndelete_branches == 0) {
+		struct got_reference *head_ref;
+		if (worktree)
+			error = got_ref_open(&head_ref, repo,
+			    got_worktree_get_head_ref_name(worktree), 0);
+		else
+			error = got_ref_open(&head_ref, repo, GOT_REF_HEAD, 0);
+		if (error)
+			goto done;
+		if (got_ref_is_symbolic(head_ref)) {
+			error = got_ref_resolve_symbolic(&ref, repo, head_ref);
+			got_ref_close(head_ref);
+			if (error)
+				goto done;
+		} else
+			ref = head_ref;
+		error = got_pathlist_append(&branches, got_ref_get_name(ref),
+		    NULL);
+		if (error)
+			goto done;
+		nbranches++;
+	}
+
+	if (verbosity >= 0) {
+		printf("Connecting to \"%s\" %s://%s%s%s%s%s\n",
+		    remote->name, proto, host,
+		    port ? ":" : "", port ? port : "",
+		    *server_path == '/' ? "" : "/", server_path);
+	}
+
+	error = got_send_connect(&sendpid, &sendfd, proto, host, port,
+	    server_path, verbosity);
+	if (error)
+		goto done;
+
+	memset(&spa, 0, sizeof(spa));
+	spa.last_scaled_packsize[0] = '\0';
+	spa.last_p_deltify = -1;
+	spa.last_p_written = -1;
+	spa.verbosity = verbosity;
+	spa.delete_branches = &delete_branches;
+	error = got_send_pack(remote_name, &branches, &tags, &delete_branches,
+	    verbosity, overwrite_refs, sendfd, repo, send_progress, &spa,
+	    check_cancelled, NULL);
+	if (spa.printed_something)
+		putchar('\n');
+	if (error)
+		goto done;
+	if (!spa.sent_something && verbosity >= 0)
+		printf("Already up-to-date\n");
+done:
+	if (sendpid > 0) {
+		if (kill(sendpid, SIGTERM) == -1)
+			error = got_error_from_errno("kill");
+		if (waitpid(sendpid, &sendstatus, 0) == -1 && error == NULL)
+			error = got_error_from_errno("waitpid");
+	}
+	if (sendfd != -1 && close(sendfd) == -1 && error == NULL)
+		error = got_error_from_errno("close");
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	if (ref)
+		got_ref_close(ref);
+	got_pathlist_free(&branches, GOT_PATHLIST_FREE_NONE);
+	got_pathlist_free(&tags, GOT_PATHLIST_FREE_NONE);
+	got_ref_list_free(&all_branches);
+	got_ref_list_free(&all_tags);
+	got_pathlist_free(&delete_args, GOT_PATHLIST_FREE_NONE);
+	got_pathlist_free(&delete_branches, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	free(repo_path);
+	free(proto);
+	free(host);
+	free(port);
+	free(server_path);
+	free(repo_name);
+	return error;
+}
+
+/*
+ * Print and if delete is set delete all ref_prefix references.
+ * If wanted_ref is not NULL, only print or delete this reference.
+ */
+static const struct got_error *
+process_logmsg_refs(const char *ref_prefix, size_t prefix_len,
+    const char *wanted_ref, int delete, struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error			*err;
+	struct got_pathlist_head		 paths;
+	struct got_reflist_head			 refs;
+	struct got_reflist_entry		*re;
+	struct got_reflist_object_id_map	*refs_idmap = NULL;
+	struct got_commit_object		*commit = NULL;
+	struct got_object_id			*id = NULL;
+	const char				*header_prefix;
+	char					*uuidstr = NULL;
+	int					 found = 0;
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&paths);
+
+	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, repo);
+	if (err)
+		goto done;
+
+	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
+	if (err)
+		goto done;
+
+	if (worktree != NULL) {
+		err = got_worktree_get_uuid(&uuidstr, worktree);
+		if (err)
+			goto done;
+	}
+
+	if (wanted_ref) {
+		if (strncmp(wanted_ref, "refs/heads/", 11) == 0)
+			wanted_ref += 11;
+	}
+
+	if (strcmp(ref_prefix, GOT_WORKTREE_BACKOUT_REF_PREFIX) == 0)
+		header_prefix = "backout";
+	else
+		header_prefix = "cherrypick";
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		const char *refname, *wt;
+
+		refname = got_ref_get_name(re->ref);
+
+		err = check_cancelled(NULL);
+		if (err)
+			goto done;
+
+		if (strncmp(refname, ref_prefix, prefix_len) == 0)
+			refname += prefix_len + 1;  /* skip '-' delimiter */
+		else
+			continue;
+
+		wt = refname;
+
+		if (worktree == NULL || strncmp(refname, uuidstr,
+		    GOT_WORKTREE_UUID_STRLEN) == 0)
+			refname += GOT_WORKTREE_UUID_STRLEN + 1; /* skip '-' */
+		else
+			continue;
+
+		err = got_repo_match_object_id(&id, NULL, refname,
+		    GOT_OBJ_TYPE_COMMIT, NULL, repo);
+		if (err)
+			goto done;
+
+		err = got_object_open_as_commit(&commit, repo, id);
+		if (err)
+			goto done;
+
+		if (wanted_ref)
+			found = strncmp(wanted_ref, refname,
+			    strlen(wanted_ref)) == 0;
+		if (wanted_ref && !found) {
+			struct got_reflist_head	*ci_refs;
+
+			ci_refs = got_reflist_object_id_map_lookup(refs_idmap,
+			    id);
+
+			if (ci_refs) {
+				char		*refs_str = NULL;
+				char const	*r = NULL;
+
+				err = build_refs_str(&refs_str, ci_refs, id,
+				    repo, 1);
+				if (err)
+					goto done;
+
+				r = refs_str;
+				while (r) {
+					if (strncmp(r, wanted_ref,
+					    strlen(wanted_ref)) == 0) {
+						found = 1;
+						break;
+					}
+					r = strchr(r, ' ');
+					if (r)
+						++r;
+				}
+				free(refs_str);
+			}
+		}
+
+		if (wanted_ref == NULL || found) {
+			if (delete) {
+				err = got_ref_delete(re->ref, repo);
+				if (err)
+					goto done;
+				printf("Deleted: ");
+				err = print_commit_oneline(commit, id, repo,
+				    refs_idmap);
+			} else {
+				/*
+				 * Print paths modified by commit to help
+				 * associate commits with worktree changes.
+				 */
+				err = get_changed_paths(&paths, commit,
+				    repo, NULL);
+				if (err)
+					goto done;
+
+				err = print_commit(commit, id, repo, NULL,
+				    &paths, NULL, 0, 0, refs_idmap, NULL,
+				    header_prefix);
+				got_pathlist_free(&paths,
+				    GOT_PATHLIST_FREE_ALL);
+
+				if (worktree == NULL)
+					printf("work tree: %.*s\n\n",
+					    GOT_WORKTREE_UUID_STRLEN, wt);
+			}
+			if (err || found)
+				goto done;
+		}
+
+		got_object_commit_close(commit);
+		commit = NULL;
+		free(id);
+		id = NULL;
+	}
+
+	if (wanted_ref != NULL && !found)
+		err = got_error_fmt(GOT_ERR_NOT_REF, "%s", wanted_ref);
+
+done:
+	free(id);
+	free(uuidstr);
+	got_ref_list_free(&refs);
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_ALL);
+	if (refs_idmap)
+		got_reflist_object_id_map_free(refs_idmap);
+	if (commit)
+		got_object_commit_close(commit);
+	return err;
+}
+
+/*
+ * Create new temp "logmsg" ref of the backed-out or cherrypicked commit
+ * identified by id for log messages to prepopulate the editor on commit.
+ */
+static const struct got_error *
+logmsg_ref(struct got_object_id *id, const char *prefix,
+    struct got_worktree *worktree, struct got_repository *repo)
+{
+	const struct got_error	*err = NULL;
+	char			*idstr, *ref = NULL, *refname = NULL;
+	int			 histedit_in_progress;
+	int			 rebase_in_progress, merge_in_progress;
+
+	/*
+	 * Silenty refuse to create merge reference if any histedit, merge,
+	 * or rebase operation is in progress.
+	 */
+	err = got_worktree_histedit_in_progress(&histedit_in_progress,
+	    worktree);
+	if (err)
+		return err;
+	if (histedit_in_progress)
+		return NULL;
+
+	err = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
+	if (err)
+		return err;
+	if (rebase_in_progress)
+		return NULL;
+
+	err = got_worktree_merge_in_progress(&merge_in_progress, worktree,
+	    repo);
+	if (err)
+		return err;
+	if (merge_in_progress)
+		return NULL;
+
+	err = got_object_id_str(&idstr, id);
+	if (err)
+		return err;
+
+	err = got_worktree_get_logmsg_ref_name(&refname, worktree, prefix);
+	if (err)
+		goto done;
+
+	if (asprintf(&ref, "%s-%s", refname, idstr) == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	err = create_ref(ref, got_worktree_get_base_commit_id(worktree),
+	    -1, repo);
+done:
+	free(ref);
+	free(idstr);
+	free(refname);
+	return err;
+}
+
+__dead static void
+usage_cherrypick(void)
+{
+	fprintf(stderr, "usage: %s cherrypick [-lX] [commit-id]\n",
+	    getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+cmd_cherrypick(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	char *cwd = NULL, *commit_id_str = NULL;
+	struct got_object_id *commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	struct got_object_qid *pid;
+	int ch, list_refs = 0, remove_refs = 0;
+	struct got_update_progress_arg upa;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "lX")) != -1) {
+		switch (ch) {
+		case 'l':
+			list_refs = 1;
+			break;
+		case 'X':
+			remove_refs = 1;
+			break;
+		default:
+			usage_cherrypick();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (list_refs || remove_refs) {
+		if (argc != 0 && argc != 1)
+			usage_cherrypick();
+	} else if (argc != 1)
+		usage_cherrypick();
+	if (list_refs && remove_refs)
+		option_conflict('l', 'X');
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (list_refs || remove_refs) {
+			if (error->code != GOT_ERR_NOT_WORKTREE)
+				goto done;
+		} else {
+			if (error->code == GOT_ERR_NOT_WORKTREE)
+				error = wrap_not_worktree_error(error,
+				    "cherrypick", cwd);
+			goto done;
+		}
+	}
+
+	error = got_repo_open(&repo,
+	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if (list_refs || remove_refs) {
+		error = process_logmsg_refs(GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
+		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN,
+		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
+		goto done;
+	}
+
+	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
+	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
+	if (error)
+		goto done;
+	error = got_object_id_str(&commit_id_str, commit_id);
+	if (error)
+		goto done;
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
+	memset(&upa, 0, sizeof(upa));
+	error = got_worktree_merge_files(worktree, pid ? &pid->id : NULL,
+	    commit_id, repo, update_progress, &upa, check_cancelled,
+	    NULL);
+	if (error != NULL)
+		goto done;
+
+	if (upa.did_something) {
+		error = logmsg_ref(commit_id,
+		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX, worktree, repo);
+		if (error)
+			goto done;
+		printf("Merged commit %s\n", commit_id_str);
+	}
+	print_merge_progress_stats(&upa);
+done:
+	free(cwd);
+	if (commit)
+		got_object_commit_close(commit);
+	free(commit_id_str);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+
+	return error;
+}
+
+__dead static void
+usage_backout(void)
+{
+	fprintf(stderr, "usage: %s backout [-lX] [commit-id]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+cmd_backout(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	char *cwd = NULL, *commit_id_str = NULL;
+	struct got_object_id *commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	struct got_object_qid *pid;
+	int ch, list_refs = 0, remove_refs = 0;
+	struct got_update_progress_arg upa;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "lX")) != -1) {
+		switch (ch) {
+		case 'l':
+			list_refs = 1;
+			break;
+		case 'X':
+			remove_refs = 1;
+			break;
+		default:
+			usage_backout();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (list_refs || remove_refs) {
+		if (argc != 0 && argc != 1)
+			usage_backout();
+	} else if (argc != 1)
+		usage_backout();
+	if (list_refs && remove_refs)
+		option_conflict('l', 'X');
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (list_refs || remove_refs) {
+			if (error->code != GOT_ERR_NOT_WORKTREE)
+				goto done;
+		} else {
+			if (error->code == GOT_ERR_NOT_WORKTREE)
+				error = wrap_not_worktree_error(error,
+				    "backout", cwd);
+			goto done;
+		}
+	}
+
+	error = got_repo_open(&repo,
+	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if (list_refs || remove_refs) {
+		error = process_logmsg_refs(GOT_WORKTREE_BACKOUT_REF_PREFIX,
+		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN,
+		    argc == 1 ? argv[0] : NULL, remove_refs, worktree, repo);
+		goto done;
+	}
+
+	error = got_repo_match_object_id(&commit_id, NULL, argv[0],
+	    GOT_OBJ_TYPE_COMMIT, NULL, repo);
+	if (error)
+		goto done;
+	error = got_object_id_str(&commit_id_str, commit_id);
+	if (error)
+		goto done;
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+	pid = STAILQ_FIRST(got_object_commit_get_parent_ids(commit));
+	if (pid == NULL) {
+		error = got_error(GOT_ERR_ROOT_COMMIT);
+		goto done;
+	}
+
+	memset(&upa, 0, sizeof(upa));
+	error = got_worktree_merge_files(worktree, commit_id, &pid->id,
+	    repo, update_progress, &upa, check_cancelled, NULL);
+	if (error != NULL)
+		goto done;
+
+	if (upa.did_something) {
+		error = logmsg_ref(commit_id, GOT_WORKTREE_BACKOUT_REF_PREFIX,
+		    worktree, repo);
+		if (error)
+			goto done;
+		printf("Backed out commit %s\n", commit_id_str);
+	}
+	print_merge_progress_stats(&upa);
+done:
+	free(cwd);
+	if (commit)
+		got_object_commit_close(commit);
+	free(commit_id_str);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	return error;
+}
+
+__dead static void
+usage_rebase(void)
+{
+	fprintf(stderr, "usage: %s rebase [-aCclX] [branch]\n", getprogname());
+	exit(1);
+}
+
+static void
+trim_logmsg(char *logmsg, int limit)
+{
+	char *nl;
+	size_t len;
+
+	len = strlen(logmsg);
+	if (len > limit)
+		len = limit;
+	logmsg[len] = '\0';
+	nl = strchr(logmsg, '\n');
+	if (nl)
+		*nl = '\0';
+}
+
+static const struct got_error *
+get_short_logmsg(char **logmsg, int limit, struct got_commit_object *commit)
+{
+	const struct got_error *err;
+	char *logmsg0 = NULL;
+	const char *s;
+
+	err = got_object_commit_get_logmsg(&logmsg0, commit);
+	if (err)
+		return err;
+
+	s = logmsg0;
+	while (isspace((unsigned char)s[0]))
+		s++;
+
+	*logmsg = strdup(s);
+	if (*logmsg == NULL) {
+		err = got_error_from_errno("strdup");
+		goto done;
+	}
+
+	trim_logmsg(*logmsg, limit);
+done:
+	free(logmsg0);
+	return err;
+}
+
+static const struct got_error *
+show_rebase_merge_conflict(struct got_object_id *id,
+    struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_commit_object *commit = NULL;
+	char *id_str = NULL, *logmsg = NULL;
+
+	err = got_object_open_as_commit(&commit, repo, id);
+	if (err)
+		return err;
+
+	err = got_object_id_str(&id_str, id);
+	if (err)
+		goto done;
+
+	id_str[12] = '\0';
+
+	err = get_short_logmsg(&logmsg, 42, commit);
+	if (err)
+		goto done;
+
+	printf("%s -> merge conflict: %s\n", id_str, logmsg);
+done:
+	free(id_str);
+	got_object_commit_close(commit);
+	free(logmsg);
+	return err;
+}
+
+static const struct got_error *
+show_rebase_progress(struct got_commit_object *commit,
+    struct got_object_id *old_id, struct got_object_id *new_id)
+{
+	const struct got_error *err;
+	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
+
+	err = got_object_id_str(&old_id_str, old_id);
+	if (err)
+		goto done;
+
+	if (new_id) {
+		err = got_object_id_str(&new_id_str, new_id);
+		if (err)
+			goto done;
+	}
+
+	old_id_str[12] = '\0';
+	if (new_id_str)
+		new_id_str[12] = '\0';
+
+	err = get_short_logmsg(&logmsg, 42, commit);
+	if (err)
+		goto done;
+
+	printf("%s -> %s: %s\n", old_id_str,
+	    new_id_str ? new_id_str : "no-op change", logmsg);
+done:
+	free(old_id_str);
+	free(new_id_str);
+	free(logmsg);
+	return err;
+}
+
+static const struct got_error *
+rebase_complete(struct got_worktree *worktree, struct got_fileindex *fileindex,
+    struct got_reference *branch, struct got_reference *tmp_branch,
+    struct got_repository *repo, int create_backup)
+{
+	printf("Switching work tree to %s\n", got_ref_get_name(branch));
+	return got_worktree_rebase_complete(worktree, fileindex,
+	    tmp_branch, branch, repo, create_backup);
+}
+
+static const struct got_error *
+rebase_commit(struct got_pathlist_head *merged_paths,
+    struct got_worktree *worktree, struct got_fileindex *fileindex,
+    struct got_reference *tmp_branch, const char *committer,
+    struct got_object_id *commit_id, int allow_conflict,
+    struct got_repository *repo)
+{
+	const struct got_error *error;
+	struct got_commit_object *commit;
+	struct got_object_id *new_commit_id;
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		return error;
+
+	error = got_worktree_rebase_commit(&new_commit_id, merged_paths,
+	    worktree, fileindex, tmp_branch, committer, commit, commit_id,
+	    allow_conflict, repo);
+	if (error) {
+		if (error->code != GOT_ERR_COMMIT_NO_CHANGES)
+			goto done;
+		error = show_rebase_progress(commit, commit_id, NULL);
+	} else {
+		error = show_rebase_progress(commit, commit_id, new_commit_id);
+		free(new_commit_id);
+	}
+done:
+	got_object_commit_close(commit);
+	return error;
+}
+
+struct check_path_prefix_arg {
+	const char *path_prefix;
+	size_t len;
+	int errcode;
+};
+
+static const struct got_error *
+check_path_prefix_in_diff(void *arg, struct got_blob_object *blob1,
+    struct got_blob_object *blob2, FILE *f1, FILE *f2,
+    struct got_object_id *id1, struct got_object_id *id2,
+    const char *path1, const char *path2,
+    mode_t mode1, mode_t mode2, struct got_repository *repo)
+{
+	struct check_path_prefix_arg *a = arg;
+
+	if ((path1 && !got_path_is_child(path1, a->path_prefix, a->len)) ||
+	    (path2 && !got_path_is_child(path2, a->path_prefix, a->len)))
+		return got_error(a->errcode);
+
+	return NULL;
+}
+
+static const struct got_error *
+check_path_prefix(struct got_object_id *parent_id,
+    struct got_object_id *commit_id, const char *path_prefix,
+    int errcode, struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_tree_object *tree1 = NULL, *tree2 = NULL;
+	struct got_commit_object *commit = NULL, *parent_commit = NULL;
+	struct check_path_prefix_arg cpp_arg;
+
+	if (got_path_is_root_dir(path_prefix))
+		return NULL;
+
+	err = got_object_open_as_commit(&commit, repo, commit_id);
+	if (err)
+		goto done;
+
+	err = got_object_open_as_commit(&parent_commit, repo, parent_id);
+	if (err)
+		goto done;
+
+	err = got_object_open_as_tree(&tree1, repo,
+	    got_object_commit_get_tree_id(parent_commit));
+	if (err)
+		goto done;
+
+	err = got_object_open_as_tree(&tree2, repo,
+	    got_object_commit_get_tree_id(commit));
+	if (err)
+		goto done;
+
+	cpp_arg.path_prefix = path_prefix;
+	while (cpp_arg.path_prefix[0] == '/')
+		cpp_arg.path_prefix++;
+	cpp_arg.len = strlen(cpp_arg.path_prefix);
+	cpp_arg.errcode = errcode;
+	err = got_diff_tree(tree1, tree2, NULL, NULL, -1, -1, "", "", repo,
+	    check_path_prefix_in_diff, &cpp_arg, 0);
+done:
+	if (tree1)
+		got_object_tree_close(tree1);
+	if (tree2)
+		got_object_tree_close(tree2);
+	if (commit)
+		got_object_commit_close(commit);
+	if (parent_commit)
+		got_object_commit_close(parent_commit);
+	return err;
+}
+
+static const struct got_error *
+collect_commits(struct got_object_id_queue *commits,
+    struct got_object_id *initial_commit_id,
+    struct got_object_id *iter_start_id, struct got_object_id *iter_stop_id,
+    const char *path_prefix, int path_prefix_errcode,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_commit_graph *graph = NULL;
+	struct got_object_id parent_id, commit_id;
+	struct got_object_qid *qid;
+
+	err = got_commit_graph_open(&graph, "/", 1);
+	if (err)
+		return err;
+
+	err = got_commit_graph_iter_start(graph, iter_start_id, repo,
+	    check_cancelled, NULL);
+	if (err)
+		goto done;
+
+	memcpy(&commit_id, initial_commit_id, sizeof(commit_id));
+	while (got_object_id_cmp(&commit_id, iter_stop_id) != 0) {
+		err = got_commit_graph_iter_next(&parent_id, graph, repo,
+		    check_cancelled, NULL);
+		if (err) {
+			if (err->code == GOT_ERR_ITER_COMPLETED) {
+				err = got_error_msg(GOT_ERR_ANCESTRY,
+				    "ran out of commits to rebase before "
+				    "youngest common ancestor commit has "
+				    "been reached?!?");
+			}
+			goto done;
+		} else {
+			err = check_path_prefix(&parent_id, &commit_id,
+			    path_prefix, path_prefix_errcode, repo);
+			if (err)
+				goto done;
+
+			err = got_object_qid_alloc(&qid, &commit_id);
+			if (err)
+				goto done;
+			STAILQ_INSERT_HEAD(commits, qid, entry);
+
+			memcpy(&commit_id, &parent_id, sizeof(commit_id));
+		}
+	}
+done:
+	got_commit_graph_close(graph);
+	return err;
+}
+
+static const struct got_error *
+get_commit_brief_str(char **brief_str, struct got_commit_object *commit)
+{
+	const struct got_error *err = NULL;
+	time_t committer_time;
+	struct tm tm;
+	char datebuf[11]; /* YYYY-MM-DD + NUL */
+	char *author0 = NULL, *author, *smallerthan;
+	char *logmsg0 = NULL, *logmsg, *newline;
+
+	committer_time = got_object_commit_get_committer_time(commit);
+	if (gmtime_r(&committer_time, &tm) == NULL)
+		return got_error_from_errno("gmtime_r");
+	if (strftime(datebuf, sizeof(datebuf), "%G-%m-%d", &tm) == 0)
+		return got_error(GOT_ERR_NO_SPACE);
+
+	author0 = strdup(got_object_commit_get_author(commit));
+	if (author0 == NULL)
+		return got_error_from_errno("strdup");
+	author = author0;
+	smallerthan = strchr(author, '<');
+	if (smallerthan && smallerthan[1] != '\0')
+		author = smallerthan + 1;
+	author[strcspn(author, "@>")] = '\0';
+
+	err = got_object_commit_get_logmsg(&logmsg0, commit);
+	if (err)
+		goto done;
+	logmsg = logmsg0;
+	while (*logmsg == '\n')
+		logmsg++;
+	newline = strchr(logmsg, '\n');
+	if (newline)
+		*newline = '\0';
+
+	if (asprintf(brief_str, "%s %s  %s",
+	    datebuf, author, logmsg) == -1)
+		err = got_error_from_errno("asprintf");
+done:
+	free(author0);
+	free(logmsg0);
+	return err;
+}
+
+static const struct got_error *
+delete_backup_ref(struct got_reference *ref, struct got_object_id *id,
+    struct got_repository *repo)
+{
+	const struct got_error *err;
+	char *id_str;
+
+	err = got_object_id_str(&id_str, id);
+	if (err)
+		return err;
+
+	err = got_ref_delete(ref, repo);
+	if (err)
+		goto done;
+
+	printf("Deleted %s: %s\n", got_ref_get_name(ref), id_str);
+done:
+	free(id_str);
+	return err;
+}
+
+static const struct got_error *
+print_backup_ref(const char *branch_name, const char *new_id_str,
+    struct got_object_id *old_commit_id, struct got_commit_object *old_commit,
+    struct got_reflist_object_id_map *refs_idmap,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_reflist_head *refs;
+	char *refs_str = NULL;
+	struct got_object_id *new_commit_id = NULL;
+	struct got_commit_object *new_commit = NULL;
+	char *new_commit_brief_str = NULL;
+	struct got_object_id *yca_id = NULL;
+	struct got_commit_object *yca_commit = NULL;
+	char *yca_id_str = NULL, *yca_brief_str = NULL;
+	char *custom_refs_str;
+
+	if (asprintf(&custom_refs_str, "formerly %s", branch_name) == -1)
+		return got_error_from_errno("asprintf");
+
+	err = print_commit(old_commit, old_commit_id, repo, NULL, NULL, NULL,
+	    0, 0, refs_idmap, custom_refs_str, NULL);
+	if (err)
+		goto done;
+
+	err = got_object_resolve_id_str(&new_commit_id, repo, new_id_str);
+	if (err)
+		goto done;
+
+	refs = got_reflist_object_id_map_lookup(refs_idmap, new_commit_id);
+	if (refs) {
+		err = build_refs_str(&refs_str, refs, new_commit_id, repo, 0);
+		if (err)
+			goto done;
+	}
+
+	err = got_object_open_as_commit(&new_commit, repo, new_commit_id);
+	if (err)
+		goto done;
+
+	err = get_commit_brief_str(&new_commit_brief_str, new_commit);
+	if (err)
+		goto done;
+
+	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
+	    old_commit_id, new_commit_id, 1, repo, check_cancelled, NULL);
+	if (err)
+		goto done;
+
+	printf("has become commit %s%s%s%s\n %s\n", new_id_str,
+	    refs_str ? " (" : "", refs_str ? refs_str : "",
+	    refs_str ? ")" : "", new_commit_brief_str);
+	if (yca_id && got_object_id_cmp(yca_id, new_commit_id) != 0 &&
+	    got_object_id_cmp(yca_id, old_commit_id) != 0) {
+		free(refs_str);
+		refs_str = NULL;
+
+		err = got_object_open_as_commit(&yca_commit, repo, yca_id);
+		if (err)
+			goto done;
+
+		err = get_commit_brief_str(&yca_brief_str, yca_commit);
+		if (err)
+			goto done;
+
+		err = got_object_id_str(&yca_id_str, yca_id);
+		if (err)
+			goto done;
+
+		refs = got_reflist_object_id_map_lookup(refs_idmap, yca_id);
+		if (refs) {
+			err = build_refs_str(&refs_str, refs, yca_id, repo, 0);
+			if (err)
+				goto done;
+		}
+		printf("history forked at %s%s%s%s\n %s\n",
+		    yca_id_str,
+		    refs_str ? " (" : "", refs_str ? refs_str : "",
+		    refs_str ? ")" : "", yca_brief_str);
+	}
+done:
+	free(custom_refs_str);
+	free(new_commit_id);
+	free(refs_str);
+	free(yca_id);
+	free(yca_id_str);
+	free(yca_brief_str);
+	if (new_commit)
+		got_object_commit_close(new_commit);
+	if (yca_commit)
+		got_object_commit_close(yca_commit);
+
+	return err;
+}
+
+static const struct got_error *
+worktree_has_logmsg_ref(const char *caller, struct got_worktree *worktree,
+    struct got_repository *repo)
+{
+	const struct got_error		*err;
+	struct got_reflist_head		 refs;
+	struct got_reflist_entry	*re;
+	char				*uuidstr = NULL;
+	static char			 msg[160];
+
+	TAILQ_INIT(&refs);
+
+	err = got_worktree_get_uuid(&uuidstr, worktree);
+	if (err)
+		goto done;
+
+	err = got_ref_list(&refs, repo, "refs/got/worktree",
+	    got_ref_cmp_by_name, repo);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &refs, entry) {
+		const char *cmd, *refname, *type;
+
+		refname = got_ref_get_name(re->ref);
+
+		if (strncmp(refname, GOT_WORKTREE_CHERRYPICK_REF_PREFIX,
+		    GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN) == 0) {
+			refname += GOT_WORKTREE_CHERRYPICK_REF_PREFIX_LEN + 1;
+			cmd = "cherrypick";
+			type = "cherrypicked";
+		} else if (strncmp(refname, GOT_WORKTREE_BACKOUT_REF_PREFIX,
+		    GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN) == 0) {
+			refname += GOT_WORKTREE_BACKOUT_REF_PREFIX_LEN + 1;
+			cmd = "backout";
+			type = "backed-out";
+		} else
+			continue;
+
+		if (strncmp(refname, uuidstr, GOT_WORKTREE_UUID_STRLEN) != 0)
+			continue;
+
+		snprintf(msg, sizeof(msg),
+		    "work tree has references created by %s commits which "
+		    "must be removed with 'got %s -X' before running the %s "
+		    "command", type, cmd, caller);
+		err = got_error_msg(GOT_ERR_WORKTREE_META, msg);
+		goto done;
+	}
+
+done:
+	free(uuidstr);
+	got_ref_list_free(&refs);
+	return err;
+}
+
+static const struct got_error *
+process_backup_refs(const char *backup_ref_prefix,
+    const char *wanted_branch_name,
+    int delete, struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_reflist_head refs, backup_refs;
+	struct got_reflist_entry *re;
+	const size_t backup_ref_prefix_len = strlen(backup_ref_prefix);
+	struct got_object_id *old_commit_id = NULL;
+	char *branch_name = NULL;
+	struct got_commit_object *old_commit = NULL;
+	struct got_reflist_object_id_map *refs_idmap = NULL;
+	int wanted_branch_found = 0;
+
+	TAILQ_INIT(&refs);
+	TAILQ_INIT(&backup_refs);
+
+	err = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (err)
+		return err;
+
+	err = got_reflist_object_id_map_create(&refs_idmap, &refs, repo);
+	if (err)
+		goto done;
+
+	if (wanted_branch_name) {
+		if (strncmp(wanted_branch_name, "refs/heads/", 11) == 0)
+			wanted_branch_name += 11;
+	}
+
+	err = got_ref_list(&backup_refs, repo, backup_ref_prefix,
+	    got_ref_cmp_by_commit_timestamp_descending, repo);
+	if (err)
+		goto done;
+
+	TAILQ_FOREACH(re, &backup_refs, entry) {
+		const char *refname = got_ref_get_name(re->ref);
+		char *slash;
+
+		err = check_cancelled(NULL);
+		if (err)
+			break;
+
+		err = got_ref_resolve(&old_commit_id, repo, re->ref);
+		if (err)
+			break;
+
+		err = got_object_open_as_commit(&old_commit, repo,
+		    old_commit_id);
+		if (err)
+			break;
+
+		if (strncmp(backup_ref_prefix, refname,
+		    backup_ref_prefix_len) == 0)
+			refname += backup_ref_prefix_len;
+
+		while (refname[0] == '/')
+			refname++;
+
+		branch_name = strdup(refname);
+		if (branch_name == NULL) {
+			err = got_error_from_errno("strdup");
+			break;
+		}
+		slash = strrchr(branch_name, '/');
+		if (slash) {
+			*slash = '\0';
+			refname += strlen(branch_name) + 1;
+		}
+
+		if (wanted_branch_name == NULL ||
+		    strcmp(wanted_branch_name, branch_name) == 0) {
+			wanted_branch_found = 1;
+			if (delete) {
+				err = delete_backup_ref(re->ref,
+				    old_commit_id, repo);
+			} else {
+				err = print_backup_ref(branch_name, refname,
+				    old_commit_id, old_commit, refs_idmap,
+				    repo);
+			}
+			if (err)
+				break;
+		}
+
+		free(old_commit_id);
+		old_commit_id = NULL;
+		free(branch_name);
+		branch_name = NULL;
+		got_object_commit_close(old_commit);
+		old_commit = NULL;
+	}
+
+	if (wanted_branch_name && !wanted_branch_found) {
+		err = got_error_fmt(GOT_ERR_NOT_REF,
+		    "%s/%s/", backup_ref_prefix, wanted_branch_name);
+	}
+done:
+	if (refs_idmap)
+		got_reflist_object_id_map_free(refs_idmap);
+	got_ref_list_free(&refs);
+	got_ref_list_free(&backup_refs);
+	free(old_commit_id);
+	free(branch_name);
+	if (old_commit)
+		got_object_commit_close(old_commit);
+	return err;
+}
+
+static const struct got_error *
+abort_progress(void *arg, unsigned char status, const char *path)
+{
+	/*
+	 * Unversioned files should not clutter progress output when
+	 * an operation is aborted.
+	 */
+	if (status == GOT_STATUS_UNVERSIONED)
+		return NULL;
+
+	return update_progress(arg, status, path);
+}
+
+static const struct got_error *
+cmd_rebase(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	struct got_fileindex *fileindex = NULL;
+	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
+	struct got_reference *branch = NULL;
+	struct got_reference *new_base_branch = NULL, *tmp_branch = NULL;
+	struct got_object_id *commit_id = NULL, *parent_id = NULL;
+	struct got_object_id *resume_commit_id = NULL;
+	struct got_object_id *branch_head_commit_id = NULL, *yca_id = NULL;
+	struct got_object_id *head_commit_id = NULL;
+	struct got_reference *head_ref = NULL;
+	struct got_commit_object *commit = NULL;
+	int ch, rebase_in_progress = 0, abort_rebase = 0, continue_rebase = 0;
+	int histedit_in_progress = 0, merge_in_progress = 0;
+	int create_backup = 1, list_backups = 0, delete_backups = 0;
+	int allow_conflict = 0;
+	struct got_object_id_queue commits;
+	struct got_pathlist_head merged_paths;
+	const struct got_object_id_queue *parent_ids;
+	struct got_object_qid *qid, *pid;
+	struct got_update_progress_arg upa;
+	int *pack_fds = NULL;
+
+	STAILQ_INIT(&commits);
+	TAILQ_INIT(&merged_paths);
+	memset(&upa, 0, sizeof(upa));
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "aCclX")) != -1) {
+		switch (ch) {
+		case 'a':
+			abort_rebase = 1;
+			break;
+		case 'C':
+			allow_conflict = 1;
+			break;
+		case 'c':
+			continue_rebase = 1;
+			break;
+		case 'l':
+			list_backups = 1;
+			break;
+		case 'X':
+			delete_backups = 1;
+			break;
+		default:
+			usage_rebase();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (list_backups) {
+		if (abort_rebase)
+			option_conflict('l', 'a');
+		if (allow_conflict)
+			option_conflict('l', 'C');
+		if (continue_rebase)
+			option_conflict('l', 'c');
+		if (delete_backups)
+			option_conflict('l', 'X');
+		if (argc != 0 && argc != 1)
+			usage_rebase();
+	} else if (delete_backups) {
+		if (abort_rebase)
+			option_conflict('X', 'a');
+		if (allow_conflict)
+			option_conflict('X', 'C');
+		if (continue_rebase)
+			option_conflict('X', 'c');
+		if (list_backups)
+			option_conflict('l', 'X');
+		if (argc != 0 && argc != 1)
+			usage_rebase();
+	} else if (allow_conflict) {
+		if (abort_rebase)
+			option_conflict('C', 'a');
+		if (!continue_rebase)
+			errx(1, "-C option requires -c");
+	} else {
+		if (abort_rebase && continue_rebase)
+			usage_rebase();
+		else if (abort_rebase || continue_rebase) {
+			if (argc != 0)
+				usage_rebase();
+		} else if (argc != 1)
+			usage_rebase();
+	}
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (list_backups || delete_backups) {
+			if (error->code != GOT_ERR_NOT_WORKTREE)
+				goto done;
+		} else {
+			if (error->code == GOT_ERR_NOT_WORKTREE)
+				error = wrap_not_worktree_error(error,
+				    "rebase", cwd);
+			goto done;
+		}
+	}
+
+	error = get_gitconfig_path(&gitconfig_path);
+	if (error)
+		goto done;
+	error = got_repo_open(&repo,
+	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
+	    gitconfig_path, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (worktree != NULL && !list_backups && !delete_backups) {
+		error = worktree_has_logmsg_ref("rebase", worktree, repo);
+		if (error)
+			goto done;
+	}
+
+	error = get_author(&committer, repo, worktree);
+	if (error && error->code != GOT_ERR_COMMIT_NO_AUTHOR)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	if (list_backups || delete_backups) {
+		error = process_backup_refs(
+		    GOT_WORKTREE_REBASE_BACKUP_REF_PREFIX,
+		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
+		goto done; /* nothing else to do */
+	}
+
+	error = got_worktree_histedit_in_progress(&histedit_in_progress,
+	    worktree);
+	if (error)
+		goto done;
+	if (histedit_in_progress) {
+		error = got_error(GOT_ERR_HISTEDIT_BUSY);
+		goto done;
+	}
+
+	error = got_worktree_merge_in_progress(&merge_in_progress,
+	    worktree, repo);
+	if (error)
+		goto done;
+	if (merge_in_progress) {
+		error = got_error(GOT_ERR_MERGE_BUSY);
+		goto done;
+	}
+
+	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
+	if (error)
+		goto done;
+
+	if (abort_rebase) {
+		if (!rebase_in_progress) {
+			error = got_error(GOT_ERR_NOT_REBASING);
+			goto done;
+		}
+		error = got_worktree_rebase_continue(&resume_commit_id,
+		    &new_base_branch, &tmp_branch, &branch, &fileindex,
+		    worktree, repo);
+		if (error)
+			goto done;
+		printf("Switching work tree to %s\n",
+		    got_ref_get_symref_target(new_base_branch));
+		error = got_worktree_rebase_abort(worktree, fileindex, repo,
+		    new_base_branch, abort_progress, &upa);
+		if (error)
+			goto done;
+		printf("Rebase of %s aborted\n", got_ref_get_name(branch));
+		print_merge_progress_stats(&upa);
+		goto done; /* nothing else to do */
+	}
+
+	if (continue_rebase) {
+		if (!rebase_in_progress) {
+			error = got_error(GOT_ERR_NOT_REBASING);
+			goto done;
+		}
+		error = got_worktree_rebase_continue(&resume_commit_id,
+		    &new_base_branch, &tmp_branch, &branch, &fileindex,
+		    worktree, repo);
+		if (error)
+			goto done;
+
+		error = rebase_commit(NULL, worktree, fileindex, tmp_branch,
+		    committer, resume_commit_id, allow_conflict, repo);
+		if (error)
+			goto done;
+
+		yca_id = got_object_id_dup(resume_commit_id);
+		if (yca_id == NULL) {
+			error = got_error_from_errno("got_object_id_dup");
+			goto done;
+		}
+	} else {
+		error = got_ref_open(&branch, repo, argv[0], 0);
+		if (error != NULL)
+			goto done;
+		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
+			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
+			    "will not rebase a branch which lives outside "
+			    "the \"refs/heads/\" reference namespace");
+			goto done;
+		}
+	}
+
+	error = got_ref_resolve(&branch_head_commit_id, repo, branch);
+	if (error)
+		goto done;
+
+	if (!continue_rebase) {
+		struct got_object_id *base_commit_id;
+
+		error = got_ref_open(&head_ref, repo,
+		    got_worktree_get_head_ref_name(worktree), 0);
+		if (error)
+			goto done;
+		error = got_ref_resolve(&head_commit_id, repo, head_ref);
+		if (error)
+			goto done;
+		base_commit_id = got_worktree_get_base_commit_id(worktree);
+		if (got_object_id_cmp(base_commit_id, head_commit_id) != 0) {
+			error = got_error(GOT_ERR_REBASE_OUT_OF_DATE);
+			goto done;
+		}
+
+		error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
+		    base_commit_id, branch_head_commit_id, 1, repo,
+		    check_cancelled, NULL);
+		if (error) {
+			if (error->code == GOT_ERR_ANCESTRY) {
+				error = got_error_msg(GOT_ERR_ANCESTRY,
+				    "specified branch shares no common "
+				    "ancestry with work tree's branch");
+			}
+			goto done;
+		}
+
+		if (got_object_id_cmp(base_commit_id, yca_id) == 0) {
+			struct got_pathlist_head paths;
+			printf("%s is already based on %s\n",
+			    got_ref_get_name(branch),
+			    got_worktree_get_head_ref_name(worktree));
+			error = switch_head_ref(branch, branch_head_commit_id,
+			    worktree, repo);
+			if (error)
+				goto done;
+			error = got_worktree_set_base_commit_id(worktree, repo,
+			    branch_head_commit_id);
+			if (error)
+				goto done;
+			TAILQ_INIT(&paths);
+			error = got_pathlist_append(&paths, "", NULL);
+			if (error)
+				goto done;
+			error = got_worktree_checkout_files(worktree,
+			    &paths, repo, update_progress, &upa,
+			    check_cancelled, NULL);
+			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
+			if (error)
+				goto done;
+			if (upa.did_something) {
+				char *id_str;
+				error = got_object_id_str(&id_str,
+				    branch_head_commit_id);
+				if (error)
+					goto done;
+				printf("Updated to %s: %s\n",
+				    got_worktree_get_head_ref_name(worktree),
+				    id_str);
+				free(id_str);
+			} else
+				printf("Already up-to-date\n");
+			print_update_progress_stats(&upa);
+			goto done;
+		}
+	}
+
+	commit_id = branch_head_commit_id;
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+
+	parent_ids = got_object_commit_get_parent_ids(commit);
+	pid = STAILQ_FIRST(parent_ids);
+	if (pid) {
+		error = collect_commits(&commits, commit_id, &pid->id,
+		    yca_id, got_worktree_get_path_prefix(worktree),
+		    GOT_ERR_REBASE_PATH, repo);
+		if (error)
+			goto done;
+	}
+
+	got_object_commit_close(commit);
+	commit = NULL;
+
+	if (!continue_rebase) {
+		error = got_worktree_rebase_prepare(&new_base_branch,
+		    &tmp_branch, &fileindex, worktree, branch, repo);
+		if (error)
+			goto done;
+	}
+
+	if (STAILQ_EMPTY(&commits)) {
+		if (continue_rebase) {
+			error = rebase_complete(worktree, fileindex,
+			    branch, tmp_branch, repo, create_backup);
+			goto done;
+		} else {
+			/* Fast-forward the reference of the branch. */
+			struct got_object_id *new_head_commit_id;
+			char *id_str;
+			error = got_ref_resolve(&new_head_commit_id, repo,
+			    new_base_branch);
+			if (error)
+				goto done;
+			error = got_object_id_str(&id_str, new_head_commit_id);
+			if (error)
+				goto done;
+			printf("Forwarding %s to commit %s\n",
+			    got_ref_get_name(branch), id_str);
+			free(id_str);
+			error = got_ref_change_ref(branch,
+			    new_head_commit_id);
+			if (error)
+				goto done;
+			/* No backup needed since objects did not change. */
+			create_backup = 0;
+		}
+	}
+
+	pid = NULL;
+	STAILQ_FOREACH(qid, &commits, entry) {
+
+		commit_id = &qid->id;
+		parent_id = pid ? &pid->id : yca_id;
+		pid = qid;
+
+		memset(&upa, 0, sizeof(upa));
+		error = got_worktree_rebase_merge_files(&merged_paths,
+		    worktree, fileindex, parent_id, commit_id, repo,
+		    update_progress, &upa, check_cancelled, NULL);
+		if (error)
+			goto done;
+
+		print_merge_progress_stats(&upa);
+		if (upa.conflicts > 0 || upa.missing > 0 ||
+		    upa.not_deleted > 0 || upa.unversioned > 0) {
+			if (upa.conflicts > 0) {
+				error = show_rebase_merge_conflict(&qid->id,
+				    repo);
+				if (error)
+					goto done;
+			}
+			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
+			break;
+		}
+
+		error = rebase_commit(&merged_paths, worktree, fileindex,
+		    tmp_branch, committer, commit_id, 0, repo);
+		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
+		if (error)
+			goto done;
+	}
+
+	if (upa.conflicts > 0 || upa.missing > 0 ||
+	    upa.not_deleted > 0 || upa.unversioned > 0) {
+		error = got_worktree_rebase_postpone(worktree, fileindex);
+		if (error)
+			goto done;
+		if (upa.conflicts > 0 && upa.missing == 0 &&
+		    upa.not_deleted == 0 && upa.unversioned == 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before rebasing "
+			    "can continue");
+		} else if (upa.conflicts > 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before rebasing "
+			    "can continue; changes destined for some "
+			    "files were not yet merged and should be "
+			    "merged manually if required before the "
+			    "rebase operation is continued");
+		} else {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "changes destined for some files were not "
+			    "yet merged and should be merged manually "
+			    "if required before the rebase operation "
+			    "is continued");
+		}
+	} else
+		error = rebase_complete(worktree, fileindex, branch,
+		    tmp_branch, repo, create_backup);
+done:
+	free(cwd);
+	free(committer);
+	free(gitconfig_path);
+	got_object_id_queue_free(&commits);
+	free(branch_head_commit_id);
+	free(resume_commit_id);
+	free(head_commit_id);
+	free(yca_id);
+	if (commit)
+		got_object_commit_close(commit);
+	if (branch)
+		got_ref_close(branch);
+	if (new_base_branch)
+		got_ref_close(new_base_branch);
+	if (tmp_branch)
+		got_ref_close(tmp_branch);
+	if (head_ref)
+		got_ref_close(head_ref);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	return error;
+}
+
+__dead static void
+usage_histedit(void)
+{
+	fprintf(stderr, "usage: %s histedit [-aCcdeflmX] [-F histedit-script] "
+	    "[branch]\n", getprogname());
+	exit(1);
+}
+
+#define GOT_HISTEDIT_PICK 'p'
+#define GOT_HISTEDIT_EDIT 'e'
+#define GOT_HISTEDIT_FOLD 'f'
+#define GOT_HISTEDIT_DROP 'd'
+#define GOT_HISTEDIT_MESG 'm'
+
+static const struct got_histedit_cmd {
+	unsigned char code;
+	const char *name;
+	const char *desc;
+} got_histedit_cmds[] = {
+	{ GOT_HISTEDIT_PICK, "pick", "use commit" },
+	{ GOT_HISTEDIT_EDIT, "edit", "use commit but stop for amending" },
+	{ GOT_HISTEDIT_FOLD, "fold", "combine with next commit that will "
+	    "be used" },
+	{ GOT_HISTEDIT_DROP, "drop", "remove commit from history" },
+	{ GOT_HISTEDIT_MESG, "mesg",
+	    "single-line log message for commit above (open editor if empty)" },
+};
+
+struct got_histedit_list_entry {
+	TAILQ_ENTRY(got_histedit_list_entry) entry;
+	struct got_object_id *commit_id;
+	const struct got_histedit_cmd *cmd;
+	char *logmsg;
+};
+TAILQ_HEAD(got_histedit_list, got_histedit_list_entry);
+
+static const struct got_error *
+histedit_write_commit(struct got_object_id *commit_id, const char *cmdname,
+    FILE *f, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *logmsg = NULL, *id_str = NULL;
+	struct got_commit_object *commit = NULL;
+	int n;
+
+	err = got_object_open_as_commit(&commit, repo, commit_id);
+	if (err)
+		goto done;
+
+	err = get_short_logmsg(&logmsg, 34, commit);
+	if (err)
+		goto done;
+
+	err = got_object_id_str(&id_str, commit_id);
+	if (err)
+		goto done;
+
+	n = fprintf(f, "%s %s %s\n", cmdname, id_str, logmsg);
+	if (n < 0)
+		err = got_ferror(f, GOT_ERR_IO);
+done:
+	if (commit)
+		got_object_commit_close(commit);
+	free(id_str);
+	free(logmsg);
+	return err;
+}
+
+static const struct got_error *
+histedit_write_commit_list(struct got_object_id_queue *commits,
+    FILE *f, int edit_logmsg_only, int fold_only, int drop_only,
+    int edit_only, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_object_qid *qid;
+	const char *histedit_cmd = NULL;
+
+	if (STAILQ_EMPTY(commits))
+		return got_error(GOT_ERR_EMPTY_HISTEDIT);
+
+	STAILQ_FOREACH(qid, commits, entry) {
+		histedit_cmd = got_histedit_cmds[0].name;
+		if (drop_only)
+			histedit_cmd = "drop";
+		else if (edit_only)
+			histedit_cmd = "edit";
+		else if (fold_only && STAILQ_NEXT(qid, entry) != NULL)
+			histedit_cmd = "fold";
+		err = histedit_write_commit(&qid->id, histedit_cmd, f, repo);
+		if (err)
+			break;
+		if (edit_logmsg_only) {
+			int n = fprintf(f, "%c\n", GOT_HISTEDIT_MESG);
+			if (n < 0) {
+				err = got_ferror(f, GOT_ERR_IO);
+				break;
+			}
+		}
+	}
+
+	return err;
+}
+
+static const struct got_error *
+write_cmd_list(FILE *f, const char *branch_name,
+    struct got_object_id_queue *commits)
+{
+	const struct got_error *err = NULL;
+	size_t i;
+	int n;
+	char *id_str;
+	struct got_object_qid *qid;
+
+	qid = STAILQ_FIRST(commits);
+	err = got_object_id_str(&id_str, &qid->id);
+	if (err)
+		return err;
+
+	n = fprintf(f,
+	    "# Editing the history of branch '%s' starting at\n"
+	    "# commit %s\n"
+	    "# Commits will be processed in order from top to "
+	    "bottom of this file.\n", branch_name, id_str);
+	if (n < 0) {
+		err = got_ferror(f, GOT_ERR_IO);
+		goto done;
+	}
+
+	n = fprintf(f, "# Available histedit commands:\n");
+	if (n < 0) {
+		err = got_ferror(f, GOT_ERR_IO);
+		goto done;
+	}
+
+	for (i = 0; i < nitems(got_histedit_cmds); i++) {
+		const struct got_histedit_cmd *cmd = &got_histedit_cmds[i];
+		n = fprintf(f, "#   %s (%c): %s\n", cmd->name, cmd->code,
+		    cmd->desc);
+		if (n < 0) {
+			err = got_ferror(f, GOT_ERR_IO);
+			break;
+		}
+	}
+done:
+	free(id_str);
+	return err;
+}
+
+static const struct got_error *
+histedit_syntax_error(int lineno)
+{
+	static char msg[42];
+	int ret;
+
+	ret = snprintf(msg, sizeof(msg), "histedit syntax error on line %d",
+	    lineno);
+	if (ret < 0 || (size_t)ret >= sizeof(msg))
+		return got_error(GOT_ERR_HISTEDIT_SYNTAX);
+
+	return got_error_msg(GOT_ERR_HISTEDIT_SYNTAX, msg);
+}
+
+static const struct got_error *
+append_folded_commit_msg(char **new_msg, struct got_histedit_list_entry *hle,
+    char *logmsg, struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_commit_object *folded_commit = NULL;
+	char *id_str, *folded_logmsg = NULL;
+
+	err = got_object_id_str(&id_str, hle->commit_id);
+	if (err)
+		return err;
+
+	err = got_object_open_as_commit(&folded_commit, repo, hle->commit_id);
+	if (err)
+		goto done;
+
+	err = got_object_commit_get_logmsg(&folded_logmsg, folded_commit);
+	if (err)
+		goto done;
+	if (asprintf(new_msg, "%s%s# log message of folded commit %s: %s",
+	    logmsg ? logmsg : "", logmsg ? "\n" : "", id_str,
+	    folded_logmsg) == -1) {
+		err = got_error_from_errno("asprintf");
+	}
+done:
+	if (folded_commit)
+		got_object_commit_close(folded_commit);
+	free(id_str);
+	free(folded_logmsg);
+	return err;
+}
+
+static struct got_histedit_list_entry *
+get_folded_commits(struct got_histedit_list_entry *hle)
+{
+	struct got_histedit_list_entry *prev, *folded = NULL;
+
+	prev = TAILQ_PREV(hle, got_histedit_list, entry);
+	while (prev && (prev->cmd->code == GOT_HISTEDIT_FOLD ||
+	    prev->cmd->code == GOT_HISTEDIT_DROP)) {
+		if (prev->cmd->code == GOT_HISTEDIT_FOLD)
+			folded = prev;
+		prev = TAILQ_PREV(prev, got_histedit_list, entry);
+	}
+
+	return folded;
+}
+
+static const struct got_error *
+histedit_edit_logmsg(struct got_histedit_list_entry *hle,
+    struct got_repository *repo)
+{
+	char *logmsg_path = NULL, *id_str = NULL, *orig_logmsg = NULL;
+	char *logmsg = NULL, *new_msg = NULL, *editor = NULL;
+	const struct got_error *err = NULL;
+	struct got_commit_object *commit = NULL;
+	int logmsg_len;
+	int fd = -1;
+	struct got_histedit_list_entry *folded = NULL;
+
+	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
+	if (err)
+		return err;
+
+	folded = get_folded_commits(hle);
+	if (folded) {
+		while (folded != hle) {
+			if (folded->cmd->code == GOT_HISTEDIT_DROP) {
+				folded = TAILQ_NEXT(folded, entry);
+				continue;
+			}
+			err = append_folded_commit_msg(&new_msg, folded,
+			    logmsg, repo);
+			if (err)
+				goto done;
+			free(logmsg);
+			logmsg = new_msg;
+			folded = TAILQ_NEXT(folded, entry);
+		}
+	}
+
+	err = got_object_id_str(&id_str, hle->commit_id);
+	if (err)
+		goto done;
+	err = got_object_commit_get_logmsg(&orig_logmsg, commit);
+	if (err)
+		goto done;
+	logmsg_len = asprintf(&new_msg,
+	    "%s\n# original log message of commit %s: %s",
+	    logmsg ? logmsg : "", id_str, orig_logmsg);
+	if (logmsg_len == -1) {
+		err = got_error_from_errno("asprintf");
+		goto done;
+	}
+	free(logmsg);
+	logmsg = new_msg;
+
+	err = got_object_id_str(&id_str, hle->commit_id);
+	if (err)
+		goto done;
+
+	err = got_opentemp_named_fd(&logmsg_path, &fd,
+	    GOT_TMPDIR_STR "/got-logmsg", "");
+	if (err)
+		goto done;
+
+	if (write(fd, logmsg, logmsg_len) == -1) {
+		err = got_error_from_errno2("write", logmsg_path);
+		goto done;
+	}
+	if (close(fd) == -1) {
+		err = got_error_from_errno2("close", logmsg_path);
+		goto done;
+	}
+	fd = -1;
+
+	err = get_editor(&editor);
+	if (err)
+		goto done;
+
+	err = edit_logmsg(&hle->logmsg, editor, logmsg_path, logmsg,
+	    logmsg_len, 0);
+	if (err) {
+		if (err->code != GOT_ERR_COMMIT_MSG_EMPTY)
+			goto done;
+		err = NULL;
+		hle->logmsg = strdup(new_msg);
+		if (hle->logmsg == NULL)
+			err = got_error_from_errno("strdup");
+	}
+done:
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno2("close", logmsg_path);
+	if (logmsg_path && unlink(logmsg_path) != 0 && err == NULL)
+		err = got_error_from_errno2("unlink", logmsg_path);
+	free(logmsg_path);
+	free(logmsg);
+	free(orig_logmsg);
+	free(editor);
+	if (commit)
+		got_object_commit_close(commit);
+	return err;
+}
+
+static const struct got_error *
+histedit_parse_list(struct got_histedit_list *histedit_cmds,
+    FILE *f, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *line = NULL, *p, *end;
+	size_t i, linesize = 0;
+	ssize_t linelen;
+	int lineno = 0, lastcmd = -1;
+	const struct got_histedit_cmd *cmd;
+	struct got_object_id *commit_id = NULL;
+	struct got_histedit_list_entry *hle = NULL;
+
+	for (;;) {
+		linelen = getline(&line, &linesize, f);
+		if (linelen == -1) {
+			const struct got_error *getline_err;
+			if (feof(f))
+				break;
+			getline_err = got_error_from_errno("getline");
+			err = got_ferror(f, getline_err->code);
+			break;
+		}
+		lineno++;
+		p = line;
+		while (isspace((unsigned char)p[0]))
+			p++;
+		if (p[0] == '#' || p[0] == '\0')
+			continue;
+		cmd = NULL;
+		for (i = 0; i < nitems(got_histedit_cmds); i++) {
+			cmd = &got_histedit_cmds[i];
+			if (strncmp(cmd->name, p, strlen(cmd->name)) == 0 &&
+			    isspace((unsigned char)p[strlen(cmd->name)])) {
+				p += strlen(cmd->name);
+				break;
+			}
+			if (p[0] == cmd->code && isspace((unsigned char)p[1])) {
+				p++;
+				break;
+			}
+		}
+		if (i == nitems(got_histedit_cmds)) {
+			err = histedit_syntax_error(lineno);
+			break;
+		}
+		while (isspace((unsigned char)p[0]))
+			p++;
+		if (cmd->code == GOT_HISTEDIT_MESG) {
+			if (lastcmd != GOT_HISTEDIT_PICK &&
+			    lastcmd != GOT_HISTEDIT_EDIT) {
+				err = got_error(GOT_ERR_HISTEDIT_CMD);
+				break;
+			}
+			if (p[0] == '\0') {
+				err = histedit_edit_logmsg(hle, repo);
+				if (err)
+					break;
+			} else {
+				hle->logmsg = strdup(p);
+				if (hle->logmsg == NULL) {
+					err = got_error_from_errno("strdup");
+					break;
+				}
+			}
+			lastcmd = cmd->code;
+			continue;
+		} else {
+			end = p;
+			while (end[0] && !isspace((unsigned char)end[0]))
+				end++;
+			*end = '\0';
+
+			err = got_object_resolve_id_str(&commit_id, repo, p);
+			if (err) {
+				/* override error code */
+				err = histedit_syntax_error(lineno);
+				break;
+			}
+		}
+		hle = malloc(sizeof(*hle));
+		if (hle == NULL) {
+			err = got_error_from_errno("malloc");
+			break;
+		}
+		hle->cmd = cmd;
+		hle->commit_id = commit_id;
+		hle->logmsg = NULL;
+		commit_id = NULL;
+		TAILQ_INSERT_TAIL(histedit_cmds, hle, entry);
+		lastcmd = cmd->code;
+	}
+
+	free(line);
+	free(commit_id);
+	return err;
+}
+
+static const struct got_error *
+histedit_check_script(struct got_histedit_list *histedit_cmds,
+    struct got_object_id_queue *commits, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	struct got_object_qid *qid;
+	struct got_histedit_list_entry *hle;
+	static char msg[92];
+	char *id_str;
+
+	if (TAILQ_EMPTY(histedit_cmds))
+		return got_error_msg(GOT_ERR_EMPTY_HISTEDIT,
+		    "histedit script contains no commands");
+	if (STAILQ_EMPTY(commits))
+		return got_error(GOT_ERR_EMPTY_HISTEDIT);
+
+	TAILQ_FOREACH(hle, histedit_cmds, entry) {
+		struct got_histedit_list_entry *hle2;
+		TAILQ_FOREACH(hle2, histedit_cmds, entry) {
+			if (hle == hle2)
+				continue;
+			if (got_object_id_cmp(hle->commit_id,
+			    hle2->commit_id) != 0)
+				continue;
+			err = got_object_id_str(&id_str, hle->commit_id);
+			if (err)
+				return err;
+			snprintf(msg, sizeof(msg), "commit %s is listed "
+			    "more than once in histedit script", id_str);
+			free(id_str);
+			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
+		}
+	}
+
+	STAILQ_FOREACH(qid, commits, entry) {
+		TAILQ_FOREACH(hle, histedit_cmds, entry) {
+			if (got_object_id_cmp(&qid->id, hle->commit_id) == 0)
+				break;
+		}
+		if (hle == NULL) {
+			err = got_object_id_str(&id_str, &qid->id);
+			if (err)
+				return err;
+			snprintf(msg, sizeof(msg),
+			    "commit %s missing from histedit script", id_str);
+			free(id_str);
+			return got_error_msg(GOT_ERR_HISTEDIT_CMD, msg);
+		}
+	}
+
+	hle = TAILQ_LAST(histedit_cmds, got_histedit_list);
+	if (hle && hle->cmd->code == GOT_HISTEDIT_FOLD)
+		return got_error_msg(GOT_ERR_HISTEDIT_CMD,
+		    "last commit in histedit script cannot be folded");
+
+	return NULL;
+}
+
+static const struct got_error *
+histedit_run_editor(struct got_histedit_list *histedit_cmds,
+    const char *path, struct got_object_id_queue *commits,
+    struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *editor;
+	FILE *f = NULL;
+
+	err = get_editor(&editor);
+	if (err)
+		return err;
+
+	if (spawn_editor(editor, path) == -1) {
+		err = got_error_from_errno("failed spawning editor");
+		goto done;
+	}
+
+	f = fopen(path, "re");
+	if (f == NULL) {
+		err = got_error_from_errno("fopen");
+		goto done;
+	}
+	err = histedit_parse_list(histedit_cmds, f, repo);
+	if (err)
+		goto done;
+
+	err = histedit_check_script(histedit_cmds, commits, repo);
+done:
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	free(editor);
+	return err;
+}
+
+static const struct got_error *
+histedit_edit_list_retry(struct got_histedit_list *, const struct got_error *,
+    struct got_object_id_queue *, const char *, const char *,
+    struct got_repository *);
+
+static const struct got_error *
+histedit_edit_script(struct got_histedit_list *histedit_cmds,
+    struct got_object_id_queue *commits, const char *branch_name,
+    int edit_logmsg_only, int fold_only, int drop_only, int edit_only,
+    struct got_repository *repo)
+{
+	const struct got_error *err;
+	FILE *f = NULL;
+	char *path = NULL;
+
+	err = got_opentemp_named(&path, &f, "got-histedit", "");
+	if (err)
+		return err;
+
+	err = write_cmd_list(f, branch_name, commits);
+	if (err)
+		goto done;
+
+	err = histedit_write_commit_list(commits, f, edit_logmsg_only,
+	    fold_only, drop_only, edit_only, repo);
+	if (err)
+		goto done;
+
+	if (drop_only || edit_logmsg_only || fold_only || edit_only) {
+		rewind(f);
+		err = histedit_parse_list(histedit_cmds, f, repo);
+	} else {
+		if (fclose(f) == EOF) {
+			err = got_error_from_errno("fclose");
+			goto done;
+		}
+		f = NULL;
+		err = histedit_run_editor(histedit_cmds, path, commits, repo);
+		if (err) {
+			if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
+			    err->code != GOT_ERR_HISTEDIT_CMD)
+				goto done;
+			err = histedit_edit_list_retry(histedit_cmds, err,
+			    commits, path, branch_name, repo);
+		}
+	}
+done:
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	if (path && unlink(path) != 0 && err == NULL)
+		err = got_error_from_errno2("unlink", path);
+	free(path);
+	return err;
+}
+
+static const struct got_error *
+histedit_save_list(struct got_histedit_list *histedit_cmds,
+    struct got_worktree *worktree, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	char *path = NULL;
+	FILE *f = NULL;
+	struct got_histedit_list_entry *hle;
+	struct got_commit_object *commit = NULL;
+
+	err = got_worktree_get_histedit_script_path(&path, worktree);
+	if (err)
+		return err;
+
+	f = fopen(path, "we");
+	if (f == NULL) {
+		err = got_error_from_errno2("fopen", path);
+		goto done;
+	}
+	TAILQ_FOREACH(hle, histedit_cmds, entry) {
+		err = histedit_write_commit(hle->commit_id, hle->cmd->name, f,
+		    repo);
+		if (err)
+			break;
+
+		if (hle->logmsg) {
+			int n = fprintf(f, "%c %s\n",
+			    GOT_HISTEDIT_MESG, hle->logmsg);
+			if (n < 0) {
+				err = got_ferror(f, GOT_ERR_IO);
+				break;
+			}
+		}
+	}
+done:
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	free(path);
+	if (commit)
+		got_object_commit_close(commit);
+	return err;
+}
+
+static void
+histedit_free_list(struct got_histedit_list *histedit_cmds)
+{
+	struct got_histedit_list_entry *hle;
+
+	while ((hle = TAILQ_FIRST(histedit_cmds))) {
+		TAILQ_REMOVE(histedit_cmds, hle, entry);
+		free(hle);
+	}
+}
+
+static const struct got_error *
+histedit_load_list(struct got_histedit_list *histedit_cmds,
+    const char *path, struct got_repository *repo)
+{
+	const struct got_error *err = NULL;
+	FILE *f = NULL;
+
+	f = fopen(path, "re");
+	if (f == NULL) {
+		err = got_error_from_errno2("fopen", path);
+		goto done;
+	}
+
+	err = histedit_parse_list(histedit_cmds, f, repo);
+done:
+	if (f && fclose(f) == EOF && err == NULL)
+		err = got_error_from_errno("fclose");
+	return err;
+}
+
+static const struct got_error *
+histedit_edit_list_retry(struct got_histedit_list *histedit_cmds,
+    const struct got_error *edit_err, struct got_object_id_queue *commits,
+    const char *path, const char *branch_name, struct got_repository *repo)
+{
+	const struct got_error *err = NULL, *prev_err = edit_err;
+	int resp = ' ';
+
+	while (resp != 'c' && resp != 'r' && resp != 'a') {
+		printf("%s: %s\n(c)ontinue editing, (r)estart editing, "
+		    "or (a)bort: ", getprogname(), prev_err->msg);
+		resp = getchar();
+		if (resp == '\n')
+			resp = getchar();
+		if (resp == 'c') {
+			histedit_free_list(histedit_cmds);
+			err = histedit_run_editor(histedit_cmds, path, commits,
+			    repo);
+			if (err) {
+				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
+				    err->code != GOT_ERR_HISTEDIT_CMD)
+					break;
+				prev_err = err;
+				resp = ' ';
+				continue;
+			}
+			break;
+		} else if (resp == 'r') {
+			histedit_free_list(histedit_cmds);
+			err = histedit_edit_script(histedit_cmds,
+			    commits, branch_name, 0, 0, 0, 0, repo);
+			if (err) {
+				if (err->code != GOT_ERR_HISTEDIT_SYNTAX &&
+				    err->code != GOT_ERR_HISTEDIT_CMD)
+					break;
+				prev_err = err;
+				resp = ' ';
+				continue;
+			}
+			break;
+		} else if (resp == 'a') {
+			err = got_error(GOT_ERR_HISTEDIT_CANCEL);
+			break;
+		} else
+			printf("invalid response '%c'\n", resp);
+	}
+
+	return err;
+}
+
+static const struct got_error *
+histedit_complete(struct got_worktree *worktree,
+    struct got_fileindex *fileindex, struct got_reference *tmp_branch,
+    struct got_reference *branch, struct got_repository *repo)
+{
+	printf("Switching work tree to %s\n",
+	    got_ref_get_symref_target(branch));
+	return got_worktree_histedit_complete(worktree, fileindex, tmp_branch,
+	    branch, repo);
+}
+
+static const struct got_error *
+show_histedit_progress(struct got_commit_object *commit,
+    struct got_histedit_list_entry *hle, struct got_object_id *new_id)
+{
+	const struct got_error *err;
+	char *old_id_str = NULL, *new_id_str = NULL, *logmsg = NULL;
+
+	err = got_object_id_str(&old_id_str, hle->commit_id);
+	if (err)
+		goto done;
+
+	if (new_id) {
+		err = got_object_id_str(&new_id_str, new_id);
+		if (err)
+			goto done;
+	}
+
+	old_id_str[12] = '\0';
+	if (new_id_str)
+		new_id_str[12] = '\0';
+
+	if (hle->logmsg) {
+		logmsg = strdup(hle->logmsg);
+		if (logmsg == NULL) {
+			err = got_error_from_errno("strdup");
+			goto done;
+		}
+		trim_logmsg(logmsg, 42);
+	} else {
+		err = get_short_logmsg(&logmsg, 42, commit);
+		if (err)
+			goto done;
+	}
+
+	switch (hle->cmd->code) {
+	case GOT_HISTEDIT_PICK:
+	case GOT_HISTEDIT_EDIT:
+		printf("%s -> %s: %s\n", old_id_str,
+		    new_id_str ? new_id_str : "no-op change", logmsg);
+		break;
+	case GOT_HISTEDIT_DROP:
+	case GOT_HISTEDIT_FOLD:
+		printf("%s ->  %s commit: %s\n", old_id_str, hle->cmd->name,
+		    logmsg);
+		break;
+	default:
+		break;
+	}
+done:
+	free(old_id_str);
+	free(new_id_str);
+	return err;
+}
+
+static const struct got_error *
+histedit_commit(struct got_pathlist_head *merged_paths,
+    struct got_worktree *worktree, struct got_fileindex *fileindex,
+    struct got_reference *tmp_branch, struct got_histedit_list_entry *hle,
+    const char *committer, int allow_conflict, struct got_repository *repo)
+{
+	const struct got_error *err;
+	struct got_commit_object *commit;
+	struct got_object_id *new_commit_id;
+
+	if ((hle->cmd->code == GOT_HISTEDIT_EDIT || get_folded_commits(hle))
+	    && hle->logmsg == NULL) {
+		err = histedit_edit_logmsg(hle, repo);
+		if (err)
+			return err;
+	}
+
+	err = got_object_open_as_commit(&commit, repo, hle->commit_id);
+	if (err)
+		return err;
+
+	err = got_worktree_histedit_commit(&new_commit_id, merged_paths,
+	    worktree, fileindex, tmp_branch, committer, commit, hle->commit_id,
+	    hle->logmsg, allow_conflict, repo);
+	if (err) {
+		if (err->code != GOT_ERR_COMMIT_NO_CHANGES)
+			goto done;
+		err = show_histedit_progress(commit, hle, NULL);
+	} else {
+		err = show_histedit_progress(commit, hle, new_commit_id);
+		free(new_commit_id);
+	}
+done:
+	got_object_commit_close(commit);
+	return err;
+}
+
+static const struct got_error *
+histedit_skip_commit(struct got_histedit_list_entry *hle,
+    struct got_worktree *worktree, struct got_repository *repo)
+{
+	const struct got_error *error;
+	struct got_commit_object *commit;
+
+	error = got_worktree_histedit_skip_commit(worktree, hle->commit_id,
+	    repo);
+	if (error)
+		return error;
+
+	error = got_object_open_as_commit(&commit, repo, hle->commit_id);
+	if (error)
+		return error;
+
+	error = show_histedit_progress(commit, hle, NULL);
+	got_object_commit_close(commit);
+	return error;
+}
+
+static const struct got_error *
+check_local_changes(void *arg, unsigned char status,
+    unsigned char staged_status, const char *path,
+    struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
+    struct got_object_id *commit_id, int dirfd, const char *de_name)
+{
+	int *have_local_changes = arg;
+
+	switch (status) {
+	case GOT_STATUS_ADD:
+	case GOT_STATUS_DELETE:
+	case GOT_STATUS_MODIFY:
+	case GOT_STATUS_CONFLICT:
+		*have_local_changes = 1;
+		return got_error(GOT_ERR_CANCELLED);
+	default:
+		break;
+	}
+
+	switch (staged_status) {
+	case GOT_STATUS_ADD:
+	case GOT_STATUS_DELETE:
+	case GOT_STATUS_MODIFY:
+		*have_local_changes = 1;
+		return got_error(GOT_ERR_CANCELLED);
+	default:
+		break;
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+cmd_histedit(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_fileindex *fileindex = NULL;
+	struct got_repository *repo = NULL;
+	char *cwd = NULL, *committer = NULL, *gitconfig_path = NULL;
+	struct got_reference *branch = NULL;
+	struct got_reference *tmp_branch = NULL;
+	struct got_object_id *resume_commit_id = NULL;
+	struct got_object_id *base_commit_id = NULL;
+	struct got_object_id *head_commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	int ch, rebase_in_progress = 0, merge_in_progress = 0;
+	struct got_update_progress_arg upa;
+	int edit_in_progress = 0, abort_edit = 0, continue_edit = 0;
+	int drop_only = 0, edit_logmsg_only = 0, fold_only = 0, edit_only = 0;
+	int allow_conflict = 0, list_backups = 0, delete_backups = 0;
+	const char *edit_script_path = NULL;
+	struct got_object_id_queue commits;
+	struct got_pathlist_head merged_paths;
+	const struct got_object_id_queue *parent_ids;
+	struct got_object_qid *pid;
+	struct got_histedit_list histedit_cmds;
+	struct got_histedit_list_entry *hle;
+	int *pack_fds = NULL;
+
+	STAILQ_INIT(&commits);
+	TAILQ_INIT(&histedit_cmds);
+	TAILQ_INIT(&merged_paths);
+	memset(&upa, 0, sizeof(upa));
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "aCcdeF:flmX")) != -1) {
+		switch (ch) {
+		case 'a':
+			abort_edit = 1;
+			break;
+		case 'C':
+			allow_conflict = 1;
+			break;
+		case 'c':
+			continue_edit = 1;
+			break;
+		case 'd':
+			drop_only = 1;
+			break;
+		case 'e':
+			edit_only = 1;
+			break;
+		case 'F':
+			edit_script_path = optarg;
+			break;
+		case 'f':
+			fold_only = 1;
+			break;
+		case 'l':
+			list_backups = 1;
+			break;
+		case 'm':
+			edit_logmsg_only = 1;
+			break;
+		case 'X':
+			delete_backups = 1;
+			break;
+		default:
+			usage_histedit();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (abort_edit && allow_conflict)
+		option_conflict('a', 'C');
+	if (abort_edit && continue_edit)
+		option_conflict('a', 'c');
+	if (edit_script_path && allow_conflict)
+		option_conflict('F', 'C');
+	if (edit_script_path && edit_logmsg_only)
+		option_conflict('F', 'm');
+	if (abort_edit && edit_logmsg_only)
+		option_conflict('a', 'm');
+	if (edit_logmsg_only && allow_conflict)
+		option_conflict('m', 'C');
+	if (continue_edit && edit_logmsg_only)
+		option_conflict('c', 'm');
+	if (abort_edit && fold_only)
+		option_conflict('a', 'f');
+	if (fold_only && allow_conflict)
+		option_conflict('f', 'C');
+	if (continue_edit && fold_only)
+		option_conflict('c', 'f');
+	if (fold_only && edit_logmsg_only)
+		option_conflict('f', 'm');
+	if (edit_script_path && fold_only)
+		option_conflict('F', 'f');
+	if (abort_edit && edit_only)
+		option_conflict('a', 'e');
+	if (continue_edit && edit_only)
+		option_conflict('c', 'e');
+	if (edit_only && edit_logmsg_only)
+		option_conflict('e', 'm');
+	if (edit_script_path && edit_only)
+		option_conflict('F', 'e');
+	if (fold_only && edit_only)
+		option_conflict('f', 'e');
+	if (drop_only && abort_edit)
+		option_conflict('d', 'a');
+	if (drop_only && allow_conflict)
+		option_conflict('d', 'C');
+	if (drop_only && continue_edit)
+		option_conflict('d', 'c');
+	if (drop_only && edit_logmsg_only)
+		option_conflict('d', 'm');
+	if (drop_only && edit_only)
+		option_conflict('d', 'e');
+	if (drop_only && edit_script_path)
+		option_conflict('d', 'F');
+	if (drop_only && fold_only)
+		option_conflict('d', 'f');
+	if (list_backups) {
+		if (abort_edit)
+			option_conflict('l', 'a');
+		if (allow_conflict)
+			option_conflict('l', 'C');
+		if (continue_edit)
+			option_conflict('l', 'c');
+		if (edit_script_path)
+			option_conflict('l', 'F');
+		if (edit_logmsg_only)
+			option_conflict('l', 'm');
+		if (drop_only)
+			option_conflict('l', 'd');
+		if (fold_only)
+			option_conflict('l', 'f');
+		if (edit_only)
+			option_conflict('l', 'e');
+		if (delete_backups)
+			option_conflict('l', 'X');
+		if (argc != 0 && argc != 1)
+			usage_histedit();
+	} else if (delete_backups) {
+		if (abort_edit)
+			option_conflict('X', 'a');
+		if (allow_conflict)
+			option_conflict('X', 'C');
+		if (continue_edit)
+			option_conflict('X', 'c');
+		if (drop_only)
+			option_conflict('X', 'd');
+		if (edit_script_path)
+			option_conflict('X', 'F');
+		if (edit_logmsg_only)
+			option_conflict('X', 'm');
+		if (fold_only)
+			option_conflict('X', 'f');
+		if (edit_only)
+			option_conflict('X', 'e');
+		if (list_backups)
+			option_conflict('X', 'l');
+		if (argc != 0 && argc != 1)
+			usage_histedit();
+	} else if (allow_conflict && !continue_edit)
+		errx(1, "-C option requires -c");
+	else if (argc != 0)
+		usage_histedit();
+
+	/*
+	 * This command cannot apply unveil(2) in all cases because the
+	 * user may choose to run an editor to edit the histedit script
+	 * and to edit individual commit log messages.
+	 * unveil(2) traverses exec(2); if an editor is used we have to
+	 * apply unveil after edit script and log messages have been written.
+	 * XXX TODO: Make use of unveil(2) where possible.
+	 */
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (list_backups || delete_backups) {
+			if (error->code != GOT_ERR_NOT_WORKTREE)
+				goto done;
+		} else {
+			if (error->code == GOT_ERR_NOT_WORKTREE)
+				error = wrap_not_worktree_error(error,
+				    "histedit", cwd);
+			goto done;
+		}
+	}
+
+	if (list_backups || delete_backups) {
+		error = got_repo_open(&repo,
+		    worktree ? got_worktree_get_repo_path(worktree) : cwd,
+		    NULL, pack_fds);
+		if (error != NULL)
+			goto done;
+		error = apply_unveil(got_repo_get_path(repo), 0,
+		    worktree ? got_worktree_get_root_path(worktree) : NULL);
+		if (error)
+			goto done;
+		error = process_backup_refs(
+		    GOT_WORKTREE_HISTEDIT_BACKUP_REF_PREFIX,
+		    argc == 1 ? argv[0] : NULL, delete_backups, repo);
+		goto done; /* nothing else to do */
+	}
+
+	error = get_gitconfig_path(&gitconfig_path);
+	if (error)
+		goto done;
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    gitconfig_path, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (worktree != NULL && !list_backups && !delete_backups) {
+		error = worktree_has_logmsg_ref("histedit", worktree, repo);
+		if (error)
+			goto done;
+	}
+
+	error = got_worktree_rebase_in_progress(&rebase_in_progress, worktree);
+	if (error)
+		goto done;
+	if (rebase_in_progress) {
+		error = got_error(GOT_ERR_REBASING);
+		goto done;
+	}
+
+	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
+	    repo);
+	if (error)
+		goto done;
+	if (merge_in_progress) {
+		error = got_error(GOT_ERR_MERGE_BUSY);
+		goto done;
+	}
+
+	error = got_worktree_histedit_in_progress(&edit_in_progress, worktree);
+	if (error)
+		goto done;
+
+	if (edit_in_progress && edit_logmsg_only) {
+		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
+		    "histedit operation is in progress in this "
+		    "work tree and must be continued or aborted "
+		    "before the -m option can be used");
+		goto done;
+	}
+	if (edit_in_progress && drop_only) {
+		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
+		    "histedit operation is in progress in this "
+		    "work tree and must be continued or aborted "
+		    "before the -d option can be used");
+		goto done;
+	}
+	if (edit_in_progress && fold_only) {
+		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
+		    "histedit operation is in progress in this "
+		    "work tree and must be continued or aborted "
+		    "before the -f option can be used");
+		goto done;
+	}
+	if (edit_in_progress && edit_only) {
+		error = got_error_msg(GOT_ERR_HISTEDIT_BUSY,
+		    "histedit operation is in progress in this "
+		    "work tree and must be continued or aborted "
+		    "before the -e option can be used");
+		goto done;
+	}
+
+	if (edit_in_progress && abort_edit) {
+		error = got_worktree_histedit_continue(&resume_commit_id,
+		    &tmp_branch, &branch, &base_commit_id, &fileindex,
+		    worktree, repo);
+		if (error)
+			goto done;
+		printf("Switching work tree to %s\n",
+		    got_ref_get_symref_target(branch));
+		error = got_worktree_histedit_abort(worktree, fileindex, repo,
+		    branch, base_commit_id, abort_progress, &upa);
+		if (error)
+			goto done;
+		printf("Histedit of %s aborted\n",
+		    got_ref_get_symref_target(branch));
+		print_merge_progress_stats(&upa);
+		goto done; /* nothing else to do */
+	} else if (abort_edit) {
+		error = got_error(GOT_ERR_NOT_HISTEDIT);
+		goto done;
+	}
+
+	error = get_author(&committer, repo, worktree);
+	if (error)
+		goto done;
+
+	if (continue_edit) {
+		char *path;
+
+		if (!edit_in_progress) {
+			error = got_error(GOT_ERR_NOT_HISTEDIT);
+			goto done;
+		}
+
+		error = got_worktree_get_histedit_script_path(&path, worktree);
+		if (error)
+			goto done;
+
+		error = histedit_load_list(&histedit_cmds, path, repo);
+		free(path);
+		if (error)
+			goto done;
+
+		error = got_worktree_histedit_continue(&resume_commit_id,
+		    &tmp_branch, &branch, &base_commit_id, &fileindex,
+		    worktree, repo);
+		if (error)
+			goto done;
+
+		error = got_ref_resolve(&head_commit_id, repo, branch);
+		if (error)
+			goto done;
+
+		error = got_object_open_as_commit(&commit, repo,
+		    head_commit_id);
+		if (error)
+			goto done;
+		parent_ids = got_object_commit_get_parent_ids(commit);
+		pid = STAILQ_FIRST(parent_ids);
+		if (pid == NULL) {
+			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
+			goto done;
+		}
+		error = collect_commits(&commits, head_commit_id, &pid->id,
+		    base_commit_id, got_worktree_get_path_prefix(worktree),
+		    GOT_ERR_HISTEDIT_PATH, repo);
+		got_object_commit_close(commit);
+		commit = NULL;
+		if (error)
+			goto done;
+	} else {
+		if (edit_in_progress) {
+			error = got_error(GOT_ERR_HISTEDIT_BUSY);
+			goto done;
+		}
+
+		error = got_ref_open(&branch, repo,
+		    got_worktree_get_head_ref_name(worktree), 0);
+		if (error != NULL)
+			goto done;
+
+		if (strncmp(got_ref_get_name(branch), "refs/heads/", 11) != 0) {
+			error = got_error_msg(GOT_ERR_COMMIT_BRANCH,
+			    "will not edit commit history of a branch outside "
+			    "the \"refs/heads/\" reference namespace");
+			goto done;
+		}
+
+		error = got_ref_resolve(&head_commit_id, repo, branch);
+		got_ref_close(branch);
+		branch = NULL;
+		if (error)
+			goto done;
+
+		error = got_object_open_as_commit(&commit, repo,
+		    head_commit_id);
+		if (error)
+			goto done;
+		parent_ids = got_object_commit_get_parent_ids(commit);
+		pid = STAILQ_FIRST(parent_ids);
+		if (pid == NULL) {
+			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
+			goto done;
+		}
+		error = collect_commits(&commits, head_commit_id, &pid->id,
+		    got_worktree_get_base_commit_id(worktree),
+		    got_worktree_get_path_prefix(worktree),
+		    GOT_ERR_HISTEDIT_PATH, repo);
+		got_object_commit_close(commit);
+		commit = NULL;
+		if (error)
+			goto done;
+
+		if (STAILQ_EMPTY(&commits)) {
+			error = got_error(GOT_ERR_EMPTY_HISTEDIT);
+			goto done;
+		}
+
+		error = got_worktree_histedit_prepare(&tmp_branch, &branch,
+		    &base_commit_id, &fileindex, worktree, repo);
+		if (error)
+			goto done;
+
+		if (edit_script_path) {
+			error = histedit_load_list(&histedit_cmds,
+			    edit_script_path, repo);
+			if (error) {
+				got_worktree_histedit_abort(worktree, fileindex,
+				    repo, branch, base_commit_id,
+				    abort_progress, &upa);
+				print_merge_progress_stats(&upa);
+				goto done;
+			}
+		} else {
+			const char *branch_name;
+			branch_name = got_ref_get_symref_target(branch);
+			if (strncmp(branch_name, "refs/heads/", 11) == 0)
+				branch_name += 11;
+			error = histedit_edit_script(&histedit_cmds, &commits,
+			    branch_name, edit_logmsg_only, fold_only,
+			    drop_only, edit_only, repo);
+			if (error) {
+				got_worktree_histedit_abort(worktree, fileindex,
+				    repo, branch, base_commit_id,
+				    abort_progress, &upa);
+				print_merge_progress_stats(&upa);
+				goto done;
+			}
+
+		}
+
+		error = histedit_save_list(&histedit_cmds, worktree,
+		    repo);
+		if (error) {
+			got_worktree_histedit_abort(worktree, fileindex,
+			    repo, branch, base_commit_id,
+			    abort_progress, &upa);
+			print_merge_progress_stats(&upa);
+			goto done;
+		}
+
+	}
+
+	error = histedit_check_script(&histedit_cmds, &commits, repo);
+	if (error)
+		goto done;
+
+	TAILQ_FOREACH(hle, &histedit_cmds, entry) {
+		if (resume_commit_id) {
+			if (got_object_id_cmp(hle->commit_id,
+			    resume_commit_id) != 0)
+				continue;
+
+			resume_commit_id = NULL;
+			if (hle->cmd->code == GOT_HISTEDIT_DROP ||
+			    hle->cmd->code == GOT_HISTEDIT_FOLD) {
+				error = histedit_skip_commit(hle, worktree,
+				    repo);
+				if (error)
+					goto done;
+			} else {
+				struct got_pathlist_head paths;
+				int have_changes = 0;
+
+				TAILQ_INIT(&paths);
+				error = got_pathlist_append(&paths, "", NULL);
+				if (error)
+					goto done;
+				error = got_worktree_status(worktree, &paths,
+				    repo, 0, check_local_changes, &have_changes,
+				    check_cancelled, NULL);
+				got_pathlist_free(&paths,
+				    GOT_PATHLIST_FREE_NONE);
+				if (error) {
+					if (error->code != GOT_ERR_CANCELLED)
+						goto done;
+					if (sigint_received || sigpipe_received)
+						goto done;
+				}
+				if (have_changes) {
+					error = histedit_commit(NULL, worktree,
+					    fileindex, tmp_branch, hle,
+					    committer, allow_conflict, repo);
+					if (error)
+						goto done;
+				} else {
+					error = got_object_open_as_commit(
+					    &commit, repo, hle->commit_id);
+					if (error)
+						goto done;
+					error = show_histedit_progress(commit,
+					    hle, NULL);
+					got_object_commit_close(commit);
+					commit = NULL;
+					if (error)
+						goto done;
+				}
+			}
+			continue;
+		}
+
+		if (hle->cmd->code == GOT_HISTEDIT_DROP) {
+			error = histedit_skip_commit(hle, worktree, repo);
+			if (error)
+				goto done;
+			continue;
+		}
+
+		error = got_object_open_as_commit(&commit, repo,
+		    hle->commit_id);
+		if (error)
+			goto done;
+		parent_ids = got_object_commit_get_parent_ids(commit);
+		pid = STAILQ_FIRST(parent_ids);
+
+		error = got_worktree_histedit_merge_files(&merged_paths,
+		    worktree, fileindex, &pid->id, hle->commit_id, repo,
+		    update_progress, &upa, check_cancelled, NULL);
+		if (error)
+			goto done;
+		got_object_commit_close(commit);
+		commit = NULL;
+
+		print_merge_progress_stats(&upa);
+		if (upa.conflicts > 0 || upa.missing > 0 ||
+		    upa.not_deleted > 0 || upa.unversioned > 0) {
+			if (upa.conflicts > 0) {
+				error = show_rebase_merge_conflict(
+				    hle->commit_id, repo);
+				if (error)
+					goto done;
+			}
+			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
+			break;
+		}
+
+		if (hle->cmd->code == GOT_HISTEDIT_EDIT) {
+			char *id_str;
+			error = got_object_id_str(&id_str, hle->commit_id);
+			if (error)
+				goto done;
+			printf("Stopping histedit for amending commit %s\n",
+			    id_str);
+			free(id_str);
+			got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
+			error = got_worktree_histedit_postpone(worktree,
+			    fileindex);
+			goto done;
+		}
+
+		if (hle->cmd->code == GOT_HISTEDIT_FOLD) {
+			error = histedit_skip_commit(hle, worktree, repo);
+			if (error)
+				goto done;
+			continue;
+		}
+
+		error = histedit_commit(&merged_paths, worktree, fileindex,
+		    tmp_branch, hle, committer, allow_conflict, repo);
+		got_pathlist_free(&merged_paths, GOT_PATHLIST_FREE_PATH);
+		if (error)
+			goto done;
+	}
+
+	if (upa.conflicts > 0 || upa.missing > 0 ||
+	    upa.not_deleted > 0 || upa.unversioned > 0) {
+		error = got_worktree_histedit_postpone(worktree, fileindex);
+		if (error)
+			goto done;
+		if (upa.conflicts > 0 && upa.missing == 0 &&
+		    upa.not_deleted == 0 && upa.unversioned == 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before histedit "
+			    "can continue");
+		} else if (upa.conflicts > 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before histedit "
+			    "can continue; changes destined for some "
+			    "files were not yet merged and should be "
+			    "merged manually if required before the "
+			    "histedit operation is continued");
+		} else {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "changes destined for some files were not "
+			    "yet merged and should be merged manually "
+			    "if required before the histedit operation "
+			    "is continued");
+		}
+	} else
+		error = histedit_complete(worktree, fileindex, tmp_branch,
+		    branch, repo);
+done:
+	free(cwd);
+	free(committer);
+	free(gitconfig_path);
+	got_object_id_queue_free(&commits);
+	histedit_free_list(&histedit_cmds);
+	free(head_commit_id);
+	free(base_commit_id);
+	free(resume_commit_id);
+	if (commit)
+		got_object_commit_close(commit);
+	if (branch)
+		got_ref_close(branch);
+	if (tmp_branch)
+		got_ref_close(tmp_branch);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	return error;
+}
+
+__dead static void
+usage_integrate(void)
+{
+	fprintf(stderr, "usage: %s integrate branch\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+cmd_integrate(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *refname = NULL, *base_refname = NULL;
+	const char *branch_arg = NULL;
+	struct got_reference *branch_ref = NULL, *base_branch_ref = NULL;
+	struct got_fileindex *fileindex = NULL;
+	struct got_object_id *commit_id = NULL, *base_commit_id = NULL;
+	int ch;
+	struct got_update_progress_arg upa;
+	int *pack_fds = NULL;
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "")) != -1) {
+		switch (ch) {
+		default:
+			usage_integrate();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc != 1)
+		usage_integrate();
+	branch_arg = argv[0];
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "integrate",
+			    cwd);
+		goto done;
+	}
+
+	error = check_rebase_or_histedit_in_progress(worktree);
+	if (error)
+		goto done;
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = check_merge_in_progress(worktree, repo);
+	if (error)
+		goto done;
+
+	if (asprintf(&refname, "refs/heads/%s", branch_arg) == -1) {
+		error = got_error_from_errno("asprintf");
+		goto done;
+	}
+
+	error = got_worktree_integrate_prepare(&fileindex, &branch_ref,
+	    &base_branch_ref, worktree, refname, repo);
+	if (error)
+		goto done;
+
+	refname = strdup(got_ref_get_name(branch_ref));
+	if (refname == NULL) {
+		error = got_error_from_errno("strdup");
+		got_worktree_integrate_abort(worktree, fileindex, repo,
+		    branch_ref, base_branch_ref);
+		goto done;
+	}
+	base_refname = strdup(got_ref_get_name(base_branch_ref));
+	if (base_refname == NULL) {
+		error = got_error_from_errno("strdup");
+		got_worktree_integrate_abort(worktree, fileindex, repo,
+		    branch_ref, base_branch_ref);
+		goto done;
+	}
+	if (strncmp(base_refname, "refs/heads/", 11) != 0) {
+		error = got_error(GOT_ERR_INTEGRATE_BRANCH);
+		got_worktree_integrate_abort(worktree, fileindex, repo,
+		    branch_ref, base_branch_ref);
+		goto done;
+	}
+
+	error = got_ref_resolve(&commit_id, repo, branch_ref);
+	if (error)
+		goto done;
+
+	error = got_ref_resolve(&base_commit_id, repo, base_branch_ref);
+	if (error)
+		goto done;
+
+	if (got_object_id_cmp(commit_id, base_commit_id) == 0) {
+		error = got_error_msg(GOT_ERR_SAME_BRANCH,
+		    "specified branch has already been integrated");
+		got_worktree_integrate_abort(worktree, fileindex, repo,
+		    branch_ref, base_branch_ref);
+		goto done;
+	}
+
+	error = check_linear_ancestry(commit_id, base_commit_id, 1, repo);
+	if (error) {
+		if (error->code == GOT_ERR_ANCESTRY)
+			error = got_error(GOT_ERR_REBASE_REQUIRED);
+		got_worktree_integrate_abort(worktree, fileindex, repo,
+		    branch_ref, base_branch_ref);
+		goto done;
+	}
+
+	memset(&upa, 0, sizeof(upa));
+	error = got_worktree_integrate_continue(worktree, fileindex, repo,
+	    branch_ref, base_branch_ref, update_progress, &upa,
+	    check_cancelled, NULL);
+	if (error)
+		goto done;
+
+	printf("Integrated %s into %s\n", refname, base_refname);
+	print_update_progress_stats(&upa);
+done:
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	free(cwd);
+	free(base_commit_id);
+	free(commit_id);
+	free(refname);
+	free(base_refname);
+	return error;
+}
+
+__dead static void
+usage_merge(void)
+{
+	fprintf(stderr, "usage: %s merge [-aCcn] [branch]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+cmd_merge(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	struct got_repository *repo = NULL;
+	struct got_fileindex *fileindex = NULL;
+	char *cwd = NULL, *id_str = NULL, *author = NULL;
+	char *gitconfig_path = NULL;
+	struct got_reference *branch = NULL, *wt_branch = NULL;
+	struct got_object_id *branch_tip = NULL, *yca_id = NULL;
+	struct got_object_id *wt_branch_tip = NULL;
+	int ch, merge_in_progress = 0, abort_merge = 0, continue_merge = 0;
+	int allow_conflict = 0, prefer_fast_forward = 1, interrupt_merge = 0;
+	struct got_update_progress_arg upa;
+	struct got_object_id *merge_commit_id = NULL;
+	char *branch_name = NULL;
+	int *pack_fds = NULL;
+
+	memset(&upa, 0, sizeof(upa));
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "aCcMn")) != -1) {
+		switch (ch) {
+		case 'a':
+			abort_merge = 1;
+			break;
+		case 'C':
+			allow_conflict = 1;
+			break;
+		case 'c':
+			continue_merge = 1;
+			break;
+		case 'M':
+			prefer_fast_forward = 0;
+			break;
+		case 'n':
+			interrupt_merge = 1;
+			break;
+		default:
+			usage_merge();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (abort_merge) {
+		if (continue_merge)
+			option_conflict('a', 'c');
+		if (!prefer_fast_forward)
+			option_conflict('a', 'M');
+		if (interrupt_merge)
+			option_conflict('a', 'n');
+	} else if (continue_merge) {
+		if (!prefer_fast_forward)
+			option_conflict('c', 'M');
+		if (interrupt_merge)
+			option_conflict('c', 'n');
+	}
+	if (allow_conflict) {
+		if (!continue_merge)
+			errx(1, "-C option requires -c");
+	}
+	if (abort_merge || continue_merge) {
+		if (argc != 0)
+			usage_merge();
+	} else if (argc != 1)
+		usage_merge();
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error,
+			    "merge", cwd);
+		goto done;
+	}
+
+	error = get_gitconfig_path(&gitconfig_path);
+	if (error)
+		goto done;
+	error = got_repo_open(&repo,
+	    worktree ? got_worktree_get_repo_path(worktree) : cwd,
+	    gitconfig_path, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (worktree != NULL) {
+		error = worktree_has_logmsg_ref("merge", worktree, repo);
+		if (error)
+			goto done;
+	}
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    worktree ? got_worktree_get_root_path(worktree) : NULL);
+	if (error)
+		goto done;
+
+	error = check_rebase_or_histedit_in_progress(worktree);
+	if (error)
+		goto done;
+
+	error = got_worktree_merge_in_progress(&merge_in_progress, worktree,
+	    repo);
+	if (error)
+		goto done;
+
+	if (merge_in_progress && !(abort_merge || continue_merge)) {
+		error = got_error(GOT_ERR_MERGE_BUSY);
+		goto done;
+	}
+
+	if (!merge_in_progress && (abort_merge || continue_merge)) {
+		error = got_error(GOT_ERR_NOT_MERGING);
+		goto done;
+	}
+
+	if (abort_merge) {
+		error = got_worktree_merge_continue(&branch_name,
+		    &branch_tip, &fileindex, worktree, repo);
+		if (error)
+			goto done;
+		error = got_worktree_merge_abort(worktree, fileindex, repo,
+		    abort_progress, &upa);
+		if (error)
+			goto done;
+		printf("Merge of %s aborted\n", branch_name);
+		goto done; /* nothing else to do */
+	}
+
+	if (strncmp(got_worktree_get_head_ref_name(worktree),
+	    "refs/heads/", 11) != 0) {
+		error = got_error_fmt(GOT_ERR_COMMIT_BRANCH,
+		    "work tree's current branch %s is outside the "
+		    "\"refs/heads/\" reference namespace; "
+		    "update -b required",
+		    got_worktree_get_head_ref_name(worktree));
+		goto done;
+	}
+
+	error = get_author(&author, repo, worktree);
+	if (error)
+		goto done;
+
+	error = got_ref_open(&wt_branch, repo,
+	    got_worktree_get_head_ref_name(worktree), 0);
+	if (error)
+		goto done;
+	error = got_ref_resolve(&wt_branch_tip, repo, wt_branch);
+	if (error)
+		goto done;
+
+	if (continue_merge) {
+		struct got_object_id *base_commit_id;
+		base_commit_id = got_worktree_get_base_commit_id(worktree);
+		if (got_object_id_cmp(wt_branch_tip, base_commit_id) != 0) {
+			error = got_error(GOT_ERR_MERGE_COMMIT_OUT_OF_DATE);
+			goto done;
+		}
+		error = got_worktree_merge_continue(&branch_name,
+		    &branch_tip, &fileindex, worktree, repo);
+		if (error)
+			goto done;
+	} else {
+		error = got_ref_open(&branch, repo, argv[0], 0);
+		if (error != NULL)
+			goto done;
+		branch_name = strdup(got_ref_get_name(branch));
+		if (branch_name == NULL) {
+			error = got_error_from_errno("strdup");
+			goto done;
+		}
+		error = got_ref_resolve(&branch_tip, repo, branch);
+		if (error)
+			goto done;
+	}
+
+	error = got_commit_graph_find_youngest_common_ancestor(&yca_id,
+	    wt_branch_tip, branch_tip, 0, repo,
+	    check_cancelled, NULL);
+	if (error && error->code != GOT_ERR_ANCESTRY)
+		goto done;
+
+	if (!continue_merge) {
+		error = check_path_prefix(wt_branch_tip, branch_tip,
+		    got_worktree_get_path_prefix(worktree),
+		    GOT_ERR_MERGE_PATH, repo);
+		if (error)
+			goto done;
+		error = got_worktree_merge_prepare(&fileindex, worktree, repo);
+		if (error)
+			goto done;
+		if (prefer_fast_forward && yca_id &&
+		    got_object_id_cmp(wt_branch_tip, yca_id) == 0) {
+			struct got_pathlist_head paths;
+			if (interrupt_merge) {
+				error = got_error_fmt(GOT_ERR_BAD_OPTION,
+				    "there are no changes to merge since %s "
+				    "is already based on %s; merge cannot be "
+				    "interrupted for amending; -n",
+				    branch_name, got_ref_get_name(wt_branch));
+				goto done;
+			}
+			printf("Forwarding %s to %s\n",
+				got_ref_get_name(wt_branch), branch_name);
+			error = got_ref_change_ref(wt_branch, branch_tip);
+			if (error)
+				goto done;
+			error = got_ref_write(wt_branch, repo);
+			if (error)
+				goto done;
+			error = got_worktree_set_base_commit_id(worktree, repo,
+			    branch_tip);
+			if (error)
+				goto done;
+			TAILQ_INIT(&paths);
+			error = got_pathlist_append(&paths, "", NULL);
+			if (error)
+				goto done;
+			error = got_worktree_checkout_files(worktree,
+			    &paths, repo, update_progress, &upa,
+			    check_cancelled, NULL);
+			got_pathlist_free(&paths, GOT_PATHLIST_FREE_NONE);
+			if (error)
+				goto done;
+			if (upa.did_something) {
+				char *id_str;
+				error = got_object_id_str(&id_str, branch_tip);
+				if (error)
+					goto done;
+				printf("Updated to commit %s\n", id_str);
+				free(id_str);
+			} else
+				printf("Already up-to-date\n");
+			print_update_progress_stats(&upa);
+			goto done;
+		}
+		error = got_worktree_merge_write_refs(worktree, branch, repo);
+		if (error)
+			goto done;
+
+		error = got_worktree_merge_branch(worktree, fileindex,
+		    yca_id, branch_tip, repo, update_progress, &upa,
+		    check_cancelled, NULL);
+		if (error)
+			goto done;
+		print_merge_progress_stats(&upa);
+		if (!upa.did_something) {
+			error = got_worktree_merge_abort(worktree, fileindex,
+			    repo, abort_progress, &upa);
+			if (error)
+				goto done;
+			printf("Already up-to-date\n");
+			goto done;
+		}
+	}
+
+	if (interrupt_merge) {
+		error = got_worktree_merge_postpone(worktree, fileindex);
+		if (error)
+			goto done;
+		printf("Merge of %s interrupted on request\n", branch_name);
+	} else if (upa.conflicts > 0 || upa.missing > 0 ||
+	    upa.not_deleted > 0 || upa.unversioned > 0) {
+		error = got_worktree_merge_postpone(worktree, fileindex);
+		if (error)
+			goto done;
+		if (upa.conflicts > 0 && upa.missing == 0 &&
+		    upa.not_deleted == 0 && upa.unversioned == 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before merging "
+			    "can continue");
+		} else if (upa.conflicts > 0) {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "conflicts must be resolved before merging "
+			    "can continue; changes destined for some "
+			    "files were not yet merged and "
+			    "should be merged manually if required before the "
+			    "merge operation is continued");
+		} else {
+			error = got_error_msg(GOT_ERR_CONFLICTS,
+			    "changes destined for some "
+			    "files were not yet merged and should be "
+			    "merged manually if required before the "
+			    "merge operation is continued");
+		}
+		goto done;
+	} else {
+		error = got_worktree_merge_commit(&merge_commit_id, worktree,
+		    fileindex, author, NULL, 1, branch_tip, branch_name,
+		    allow_conflict, repo, continue_merge ? print_status : NULL,
+		    NULL);
+		if (error)
+			goto done;
+		error = got_worktree_merge_complete(worktree, fileindex, repo);
+		if (error)
+			goto done;
+		error = got_object_id_str(&id_str, merge_commit_id);
+		if (error)
+			goto done;
+		printf("Merged %s into %s: %s\n", branch_name,
+		    got_worktree_get_head_ref_name(worktree),
+		    id_str);
+
+	}
+done:
+	free(gitconfig_path);
+	free(id_str);
+	free(merge_commit_id);
+	free(author);
+	free(branch_tip);
+	free(branch_name);
+	free(yca_id);
+	if (branch)
+		got_ref_close(branch);
+	if (wt_branch)
+		got_ref_close(wt_branch);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	return error;
+}
+
+__dead static void
+usage_stage(void)
+{
+	fprintf(stderr, "usage: %s stage [-lpS] [-F response-script] "
+	    "[path ...]\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+print_stage(void *arg, unsigned char status, unsigned char staged_status,
+    const char *path, struct got_object_id *blob_id,
+    struct got_object_id *staged_blob_id, struct got_object_id *commit_id,
+    int dirfd, const char *de_name)
+{
+	const struct got_error *err = NULL;
+	char *id_str = NULL;
+
+	if (staged_status != GOT_STATUS_ADD &&
+	    staged_status != GOT_STATUS_MODIFY &&
+	    staged_status != GOT_STATUS_DELETE)
+		return NULL;
+
+	if (staged_status == GOT_STATUS_ADD ||
+	    staged_status == GOT_STATUS_MODIFY)
+		err = got_object_id_str(&id_str, staged_blob_id);
+	else
+		err = got_object_id_str(&id_str, blob_id);
+	if (err)
+		return err;
+
+	printf("%s %c %s\n", id_str, staged_status, path);
+	free(id_str);
+	return NULL;
+}
+
+static const struct got_error *
+cmd_stage(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL;
+	struct got_pathlist_head paths;
+	int ch, list_stage = 0, pflag = 0, allow_bad_symlinks = 0;
+	FILE *patch_script_file = NULL;
+	const char *patch_script_path = NULL;
+	struct choose_patch_arg cpa;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "F:lpS")) != -1) {
+		switch (ch) {
+		case 'F':
+			patch_script_path = optarg;
+			break;
+		case 'l':
+			list_stage = 1;
+			break;
+		case 'p':
+			pflag = 1;
+			break;
+		case 'S':
+			allow_bad_symlinks = 1;
+			break;
+		default:
+			usage_stage();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (list_stage && (pflag || patch_script_path))
+		errx(1, "-l option cannot be used with other options");
+	if (patch_script_path && !pflag)
+		errx(1, "-F option can only be used together with -p option");
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "stage", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (patch_script_path) {
+		patch_script_file = fopen(patch_script_path, "re");
+		if (patch_script_file == NULL) {
+			error = got_error_from_errno2("fopen",
+			    patch_script_path);
+			goto done;
+		}
+	}
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = check_merge_in_progress(worktree, repo);
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	if (list_stage)
+		error = got_worktree_status(worktree, &paths, repo, 0,
+		    print_stage, NULL, check_cancelled, NULL);
+	else {
+		cpa.patch_script_file = patch_script_file;
+		cpa.action = "stage";
+		error = got_worktree_stage(worktree, &paths,
+		    pflag ? NULL : print_status, NULL,
+		    pflag ? choose_patch : NULL, &cpa,
+		    allow_bad_symlinks, repo);
+	}
+done:
+	if (patch_script_file && fclose(patch_script_file) == EOF &&
+	    error == NULL)
+		error = got_error_from_errno2("fclose", patch_script_path);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_unstage(void)
+{
+	fprintf(stderr, "usage: %s unstage [-p] [-F response-script] "
+	    "[path ...]\n", getprogname());
+	exit(1);
+}
+
+
+static const struct got_error *
+cmd_unstage(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL;
+	struct got_pathlist_head paths;
+	int ch, pflag = 0;
+	struct got_update_progress_arg upa;
+	FILE *patch_script_file = NULL;
+	const char *patch_script_path = NULL;
+	struct choose_patch_arg cpa;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath fattr flock proc exec sendfd "
+	    "unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "F:p")) != -1) {
+		switch (ch) {
+		case 'F':
+			patch_script_path = optarg;
+			break;
+		case 'p':
+			pflag = 1;
+			break;
+		default:
+			usage_unstage();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (patch_script_path && !pflag)
+		errx(1, "-F option can only be used together with -p option");
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "unstage", cwd);
+		goto done;
+	}
+
+	error = got_repo_open(&repo, got_worktree_get_repo_path(worktree),
+	    NULL, pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (patch_script_path) {
+		patch_script_file = fopen(patch_script_path, "re");
+		if (patch_script_file == NULL) {
+			error = got_error_from_errno2("fopen",
+			    patch_script_path);
+			goto done;
+		}
+	}
+
+	error = apply_unveil(got_repo_get_path(repo), 0,
+	    got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	error = get_worktree_paths_from_argv(&paths, argc, argv, worktree);
+	if (error)
+		goto done;
+
+	cpa.patch_script_file = patch_script_file;
+	cpa.action = "unstage";
+	memset(&upa, 0, sizeof(upa));
+	error = got_worktree_unstage(worktree, &paths, update_progress,
+	    &upa, pflag ? choose_patch : NULL, &cpa, repo);
+	if (!error)
+		print_merge_progress_stats(&upa);
+done:
+	if (patch_script_file && fclose(patch_script_file) == EOF &&
+	    error == NULL)
+		error = got_error_from_errno2("fclose", patch_script_path);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (worktree)
+		got_worktree_close(worktree);
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	return error;
+}
+
+__dead static void
+usage_cat(void)
+{
+	fprintf(stderr, "usage: %s cat [-P] [-c commit] [-r repository-path] "
+	    "arg ...\n", getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+cat_blob(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err;
+	struct got_blob_object *blob;
+	int fd = -1;
+
+	fd = got_opentempfd();
+	if (fd == -1)
+		return got_error_from_errno("got_opentempfd");
+
+	err = got_object_open_as_blob(&blob, repo, id, 8192, fd);
+	if (err)
+		goto done;
+
+	err = got_object_blob_dump_to_file(NULL, NULL, NULL, outfile, blob);
+done:
+	if (fd != -1 && close(fd) == -1 && err == NULL)
+		err = got_error_from_errno("close");
+	if (blob)
+		got_object_blob_close(blob);
+	return err;
+}
+
+static const struct got_error *
+cat_tree(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err;
+	struct got_tree_object *tree;
+	int nentries, i;
+
+	err = got_object_open_as_tree(&tree, repo, id);
+	if (err)
+		return err;
+
+	nentries = got_object_tree_get_nentries(tree);
+	for (i = 0; i < nentries; i++) {
+		struct got_tree_entry *te;
+		char *id_str;
+		if (sigint_received || sigpipe_received)
+			break;
+		te = got_object_tree_get_entry(tree, i);
+		err = got_object_id_str(&id_str, got_tree_entry_get_id(te));
+		if (err)
+			break;
+		fprintf(outfile, "%s %.7o %s\n", id_str,
+		    got_tree_entry_get_mode(te),
+		    got_tree_entry_get_name(te));
+		free(id_str);
+	}
+
+	got_object_tree_close(tree);
+	return err;
+}
+
+static const struct got_error *
+cat_commit(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err;
+	struct got_commit_object *commit;
+	const struct got_object_id_queue *parent_ids;
+	struct got_object_qid *pid;
+	char *id_str = NULL;
+	const char *logmsg = NULL;
+	char gmtoff[6];
+
+	err = got_object_open_as_commit(&commit, repo, id);
+	if (err)
+		return err;
+
+	err = got_object_id_str(&id_str, got_object_commit_get_tree_id(commit));
+	if (err)
+		goto done;
+
+	fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_TREE, id_str);
+	parent_ids = got_object_commit_get_parent_ids(commit);
+	fprintf(outfile, "numparents %d\n",
+	    got_object_commit_get_nparents(commit));
+	STAILQ_FOREACH(pid, parent_ids, entry) {
+		char *pid_str;
+		err = got_object_id_str(&pid_str, &pid->id);
+		if (err)
+			goto done;
+		fprintf(outfile, "%s%s\n", GOT_COMMIT_LABEL_PARENT, pid_str);
+		free(pid_str);
+	}
+	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
+	    got_object_commit_get_author_gmtoff(commit));
+	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_AUTHOR,
+	    got_object_commit_get_author(commit),
+	    (long long)got_object_commit_get_author_time(commit),
+	    gmtoff);
+
+	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
+	    got_object_commit_get_committer_gmtoff(commit));
+	fprintf(outfile, "%s%s %lld %s\n", GOT_COMMIT_LABEL_COMMITTER,
+	    got_object_commit_get_committer(commit),
+	    (long long)got_object_commit_get_committer_time(commit),
+	    gmtoff);
+
+	logmsg = got_object_commit_get_logmsg_raw(commit);
+	fprintf(outfile, "messagelen %zd\n", strlen(logmsg));
+	fprintf(outfile, "%s", logmsg);
+done:
+	free(id_str);
+	got_object_commit_close(commit);
+	return err;
+}
+
+static const struct got_error *
+cat_tag(struct got_object_id *id, struct got_repository *repo, FILE *outfile)
+{
+	const struct got_error *err;
+	struct got_tag_object *tag;
+	char *id_str = NULL;
+	const char *tagmsg = NULL;
+	char gmtoff[6];
+
+	err = got_object_open_as_tag(&tag, repo, id);
+	if (err)
+		return err;
+
+	err = got_object_id_str(&id_str, got_object_tag_get_object_id(tag));
+	if (err)
+		goto done;
+
+	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_OBJECT, id_str);
+
+	switch (got_object_tag_get_object_type(tag)) {
+	case GOT_OBJ_TYPE_BLOB:
+		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
+		    GOT_OBJ_LABEL_BLOB);
+		break;
+	case GOT_OBJ_TYPE_TREE:
+		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
+		    GOT_OBJ_LABEL_TREE);
+		break;
+	case GOT_OBJ_TYPE_COMMIT:
+		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
+		    GOT_OBJ_LABEL_COMMIT);
+		break;
+	case GOT_OBJ_TYPE_TAG:
+		fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TYPE,
+		    GOT_OBJ_LABEL_TAG);
+		break;
+	default:
+		break;
+	}
+
+	fprintf(outfile, "%s%s\n", GOT_TAG_LABEL_TAG,
+	    got_object_tag_get_name(tag));
+
+	got_date_format_gmtoff(gmtoff, sizeof(gmtoff),
+	    got_object_tag_get_tagger_gmtoff(tag));
+	fprintf(outfile, "%s%s %lld %s\n", GOT_TAG_LABEL_TAGGER,
+	    got_object_tag_get_tagger(tag),
+	    (long long)got_object_tag_get_tagger_time(tag),
+	    gmtoff);
+
+	tagmsg = got_object_tag_get_message(tag);
+	fprintf(outfile, "messagelen %zd\n", strlen(tagmsg));
+	fprintf(outfile, "%s", tagmsg);
+done:
+	free(id_str);
+	got_object_tag_close(tag);
+	return err;
+}
+
+static const struct got_error *
+cmd_cat(int argc, char *argv[])
+{
+	const struct got_error *error;
+	struct got_repository *repo = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *repo_path = NULL, *label = NULL;
+	const char *commit_id_str = NULL;
+	struct got_object_id *id = NULL, *commit_id = NULL;
+	struct got_commit_object *commit = NULL;
+	int ch, obj_type, i, force_path = 0;
+	struct got_reflist_head refs;
+	int *pack_fds = NULL;
+
+	TAILQ_INIT(&refs);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "c:Pr:")) != -1) {
+		switch (ch) {
+		case 'c':
+			commit_id_str = optarg;
+			break;
+		case 'P':
+			force_path = 1;
+			break;
+		case 'r':
+			repo_path = realpath(optarg, NULL);
+			if (repo_path == NULL)
+				return got_error_from_errno2("realpath",
+				    optarg);
+			got_path_strip_trailing_slashes(repo_path);
+			break;
+		default:
+			usage_cat();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_repo_pack_fds_open(&pack_fds);
+	if (error != NULL)
+		goto done;
+
+	if (repo_path == NULL) {
+		error = got_worktree_open(&worktree, cwd);
+		if (error && error->code != GOT_ERR_NOT_WORKTREE)
+			goto done;
+		if (worktree) {
+			repo_path = strdup(
+			    got_worktree_get_repo_path(worktree));
+			if (repo_path == NULL) {
+				error = got_error_from_errno("strdup");
+				goto done;
+			}
+
+			/* Release work tree lock. */
+			got_worktree_close(worktree);
+			worktree = NULL;
+		}
+	}
+
+	if (repo_path == NULL) {
+		repo_path = strdup(cwd);
+		if (repo_path == NULL)
+			return got_error_from_errno("strdup");
+	}
+
+	error = got_repo_open(&repo, repo_path, NULL, pack_fds);
+	free(repo_path);
+	if (error != NULL)
+		goto done;
+
+	error = apply_unveil(got_repo_get_path(repo), 1, NULL);
+	if (error)
+		goto done;
+
+	error = got_ref_list(&refs, repo, NULL, got_ref_cmp_by_name, NULL);
+	if (error)
+		goto done;
+
+	if (commit_id_str == NULL)
+		commit_id_str = GOT_REF_HEAD;
+	error = got_repo_match_object_id(&commit_id, NULL,
+	    commit_id_str, GOT_OBJ_TYPE_COMMIT, &refs, repo);
+	if (error)
+		goto done;
+
+	error = got_object_open_as_commit(&commit, repo, commit_id);
+	if (error)
+		goto done;
+
+	for (i = 0; i < argc; i++) {
+		if (force_path) {
+			error = got_object_id_by_path(&id, repo, commit,
+			    argv[i]);
+			if (error)
+				break;
+		} else {
+			error = got_repo_match_object_id(&id, &label, argv[i],
+			    GOT_OBJ_TYPE_ANY, NULL /* do not resolve tags */,
+			    repo);
+			if (error) {
+				if (error->code != GOT_ERR_BAD_OBJ_ID_STR &&
+				    error->code != GOT_ERR_NOT_REF)
+					break;
+				error = got_object_id_by_path(&id, repo,
+				    commit, argv[i]);
+				if (error)
+					break;
+			}
+		}
+
+		error = got_object_get_type(&obj_type, repo, id);
+		if (error)
+			break;
+
+		switch (obj_type) {
+		case GOT_OBJ_TYPE_BLOB:
+			error = cat_blob(id, repo, stdout);
+			break;
+		case GOT_OBJ_TYPE_TREE:
+			error = cat_tree(id, repo, stdout);
+			break;
+		case GOT_OBJ_TYPE_COMMIT:
+			error = cat_commit(id, repo, stdout);
+			break;
+		case GOT_OBJ_TYPE_TAG:
+			error = cat_tag(id, repo, stdout);
+			break;
+		default:
+			error = got_error(GOT_ERR_OBJ_TYPE);
+			break;
+		}
+		if (error)
+			break;
+		free(label);
+		label = NULL;
+		free(id);
+		id = NULL;
+	}
+done:
+	free(label);
+	free(id);
+	free(commit_id);
+	if (commit)
+		got_object_commit_close(commit);
+	if (worktree)
+		got_worktree_close(worktree);
+	if (repo) {
+		const struct got_error *close_err = got_repo_close(repo);
+		if (error == NULL)
+			error = close_err;
+	}
+	if (pack_fds) {
+		const struct got_error *pack_err =
+		    got_repo_pack_fds_close(pack_fds);
+		if (error == NULL)
+			error = pack_err;
+	}
+
+	got_ref_list_free(&refs);
+	return error;
+}
+
+__dead static void
+usage_info(void)
+{
+	fprintf(stderr, "usage: %s info [path ...]\n",
+	    getprogname());
+	exit(1);
+}
+
+static const struct got_error *
+print_path_info(void *arg, const char *path, mode_t mode, time_t mtime,
+    struct got_object_id *blob_id, struct got_object_id *staged_blob_id,
+    struct got_object_id *commit_id)
+{
+	const struct got_error *err = NULL;
+	char *id_str = NULL;
+	char datebuf[128];
+	struct tm mytm, *tm;
+	struct got_pathlist_head *paths = arg;
+	struct got_pathlist_entry *pe;
+
+	/*
+	 * Clear error indication from any of the path arguments which
+	 * would cause this file index entry to be displayed.
+	 */
+	TAILQ_FOREACH(pe, paths, entry) {
+		if (got_path_cmp(path, pe->path, strlen(path),
+		    pe->path_len) == 0 ||
+		    got_path_is_child(path, pe->path, pe->path_len))
+			pe->data = NULL; /* no error */
+	}
+
+	printf(GOT_COMMIT_SEP_STR);
+	if (S_ISLNK(mode))
+		printf("symlink: %s\n", path);
+	else if (S_ISREG(mode)) {
+		printf("file: %s\n", path);
+		printf("mode: %o\n", mode & (S_IRWXU | S_IRWXG | S_IRWXO));
+	} else if (S_ISDIR(mode))
+		printf("directory: %s\n", path);
+	else
+		printf("something: %s\n", path);
+
+	tm = localtime_r(&mtime, &mytm);
+	if (tm == NULL)
+		return NULL;
+	if (strftime(datebuf, sizeof(datebuf), "%c %Z", tm) == 0)
+		return got_error(GOT_ERR_NO_SPACE);
+	printf("timestamp: %s\n", datebuf);
+
+	if (blob_id) {
+		err = got_object_id_str(&id_str, blob_id);
+		if (err)
+			return err;
+		printf("based on blob: %s\n", id_str);
+		free(id_str);
+	}
+
+	if (staged_blob_id) {
+		err = got_object_id_str(&id_str, staged_blob_id);
+		if (err)
+			return err;
+		printf("based on staged blob: %s\n", id_str);
+		free(id_str);
+	}
+
+	if (commit_id) {
+		err = got_object_id_str(&id_str, commit_id);
+		if (err)
+			return err;
+		printf("based on commit: %s\n", id_str);
+		free(id_str);
+	}
+
+	return NULL;
+}
+
+static const struct got_error *
+cmd_info(int argc, char *argv[])
+{
+	const struct got_error *error = NULL;
+	struct got_worktree *worktree = NULL;
+	char *cwd = NULL, *id_str = NULL;
+	struct got_pathlist_head paths;
+	char *uuidstr = NULL;
+	int ch, show_files = 0;
+
+	TAILQ_INIT(&paths);
+
+#ifndef PROFILE
+	if (pledge("stdio rpath wpath cpath flock proc exec sendfd unveil",
+	    NULL) == -1)
+		err(1, "pledge");
+#endif
+
+	while ((ch = getopt(argc, argv, "")) != -1) {
+		switch (ch) {
+		default:
+			usage_info();
+			/* NOTREACHED */
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	cwd = getcwd(NULL, 0);
+	if (cwd == NULL) {
+		error = got_error_from_errno("getcwd");
+		goto done;
+	}
+
+	error = got_worktree_open(&worktree, cwd);
+	if (error) {
+		if (error->code == GOT_ERR_NOT_WORKTREE)
+			error = wrap_not_worktree_error(error, "info", cwd);
+		goto done;
+	}
+
+#ifndef PROFILE
+	/* Remove "wpath cpath proc exec sendfd" promises. */
+	if (pledge("stdio rpath flock unveil", NULL) == -1)
+		err(1, "pledge");
+#endif
+	error = apply_unveil(NULL, 0, got_worktree_get_root_path(worktree));
+	if (error)
+		goto done;
+
+	if (argc >= 1) {
+		error = get_worktree_paths_from_argv(&paths, argc, argv,
+		    worktree);
+		if (error)
+			goto done;
+		show_files = 1;
+	}
+
+	error = got_object_id_str(&id_str,
+	    got_worktree_get_base_commit_id(worktree));
+	if (error)
+		goto done;
+
+	error = got_worktree_get_uuid(&uuidstr, worktree);
+	if (error)
+		goto done;
+
+	printf("work tree: %s\n", got_worktree_get_root_path(worktree));
+	printf("work tree base commit: %s\n", id_str);
+	printf("work tree path prefix: %s\n",
+	    got_worktree_get_path_prefix(worktree));
+	printf("work tree branch reference: %s\n",
+	    got_worktree_get_head_ref_name(worktree));
+	printf("work tree UUID: %s\n", uuidstr);
+	printf("repository: %s\n", got_worktree_get_repo_path(worktree));
+
+	if (show_files) {
+		struct got_pathlist_entry *pe;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (pe->path_len == 0)
+				continue;
+			/*
+			 * Assume this path will fail. This will be corrected
+			 * in print_path_info() in case the path does suceeed.
+			 */
+			pe->data = (void *)got_error(GOT_ERR_BAD_PATH);
+		}
+		error = got_worktree_path_info(worktree, &paths,
+		    print_path_info, &paths, check_cancelled, NULL);
+		if (error)
+			goto done;
+		TAILQ_FOREACH(pe, &paths, entry) {
+			if (pe->data != NULL) {
+				const struct got_error *perr;
+
+				perr = pe->data;
+				error = got_error_fmt(perr->code, "%s",
+				    pe->path);
+				break;
+			}
+		}
+	}
+done:
+	if (worktree)
+		got_worktree_close(worktree);
+	got_pathlist_free(&paths, GOT_PATHLIST_FREE_PATH);
+	free(cwd);
+	free(id_str);
+	free(uuidstr);
+	return error;
+}