ok tracey

Fix the thread comparison with tog's blame view.

When checking for ncurses, only check against the widechar version of the library, otherwise the code won't work correctly, despite it compiling properly. Helped by Thomas Dickey.

This commit modifies the GoT main branch to be able to compile it under linux.

pthread_yield(3) is an optional POSIX 2001 extension while sched_yield(2) is part of POSIX 2008. On OpenBSD they are actually equivalent, albeit not documented as such. Using sched_yield(2) helps the -portable version. Patch by Quentin Rameau

ok jasper

ok tracey

ok stsp

ok tracey stsp

This should avoid unexpected behaviour resulting from unrelated key presses messing with the log view's state variables. Pointed out by tracey, and also discussed with jasper. ok tracey

Otherwise tog gets into a funky non-recoverable state if these keys are pressed instead of Backspace while commits are loading. bug found by + ok tracey

Our use of ctrl+u was not consistent with vi(1) after all. Discussed with naddy, tb, and jasper on gameoftrees@

ok jasper

The keybindings that we settled on are Home, Ctrl-u and g to go to the first item and End, G to go to the last. This resembles those commonly found elsewhere, eg vi/less. discussed with and ok stsp

Problem noticed by naddy due to failing regress tests at midnight, and then analyzed with additional help from millert. ok naddy

Once the parent commit is closed the tree_id1 pointer is no longer valid, but the pointer was still being used. Make a deep copy to fix this issue.

The singly-linked tail queue macros were added to OpenBSD 6.9 and are more widely available on other systems. ok stsp

ok tracey

strftime(3) returns 0 if the buffer was too short to write the complete string (including NUL) and will never return more than maxsize-1. ok stsp

reported by + ok naddy