ok stsp

ok stsp

Also rename scroll_{up,down} to log_scroll_{up,down}; requested by stsp. ok stsp

Pass only the view and scroll amount to these functions; remove unused parameters and those that are contained in the view state. ok stsp

problem reported by, fixed with lots of help from, and ok naddy

The tree view attempts to keep the scroll position of an already visited parent directory intact. If we start out by viewing a subtree and then move up, the scroll position of the parent isn't actually available since the parent tree was never nagivated by the user. In this case tree_view_walk_path() has to fill in some values. The only parent entry we know about in this case is the one which was traversed to reach the child. The best we can do is to lock the parent's scroll position such that the traversed child entry appears at the top of the list if moving up to the parent's view. If we then navigate down again and return, the parent's scroll position will start to be retained and restored properly. Analysis and draft patch by stsp, initial report and simpler fix by yours truly. ok stsp

ok naddy tracey

ok tracey naddy

ok naddy tracey

suggested by naddy

ok naddy

This moves the pthread_cond_destroy(need_commits) from stop_log_thread(), which can be called twice, to close_log_view(), which is called once. It also destroys the commit_loaded condition variable, which is created in open_log_view() but was never destroyed. ok stsp

ok naddy@

This new diff implementation was started by Neels Hofmeyr during the u2k20 hackathon and now replaces diffreg.c code lifted from the OpenBSD base system. The integration of this code into Got was done by me. Got now uses the patience diff algorithm by default. The diff.git repository will remain the primary repository for the diff code, which already compiles and runs on other operating systems such as Linux. Any fixes and improvements for files inherited from the diff.git repository should be written against that repository and synced to got.git afterwards.