when aborting rebase/histedit/merge, unlink files added by merged changes Otherwise we leave unversioned files behind in the work tree which may interfere with new attempts to rebase or merge the changes again. Problem found by + ok naddy@

extent regress test to check content after histedit fold operation

support histedit fold operations which delete a file and then add it again problem found by naddy@ ok op@

add xfail test for histedit folding of delete followed by add If a file is deleted, then in modified form added again, folding should restore the file with its new contents. ok stsp

regress: replace "sed -i" with ed(1) for portable in-place editing "sed -i" is fundamentally unportable. GNU and OpenBSD sed(1) treat the extension for the backup file as an optional argument and use "sed -i" for no backup file. FreeBSD sed(1) treats the extension as an obligatory argument and uses "sed -i ''" for no backup file. There is no single syntax that works for both. ok stsp op

got: add 'got histedit -d' flag to drop all commits Like -f, except drop all commits. Discussed with op and stsp on irc. ok stsp@

use VISUAL instead of EDITOR in histedit_mesg_filemode_change VISUAL is preferred and relying on EDITOR may cause test failures in some environments. pointed out by op and jamsek

simplify file content comparison in a regress test; suggested by op@

fix histedit -m on a commit which only changes filemode bits The commit was being miscategorized as a no-op change and dropped. Now the commit is retained and its log message is updated as expected. ok op, jamsek

regress: consistently use ed -s didn't know about -s when writing those tests; saves some output redirection. ok jamsek

respect umask when creating or changing files and directories This behaviour is already documented in got-worktree(5) but wasn't actually implemented. ok stsp@

reset committer during rebase and histedit ok op@

regress: add missing return in error path

histedit: make sure mesg is only used after pick or edit It doesn't really make sense to use mesg after a fold or drop, or after another mesg. it currently "works" as intended, but the behaviour is confusing and not useful, better abort the operation as it's probably not what the user intended. Suggested by and ok stsp@

use test(1) -eq and -ne to compare integers, and reduce quoting This brings the rest of the regression test scripts in line with patch.sh.