regress: make cmdline tests sh compatible Ensure shell scripts can run under more POSIX-restricted shells. OK op@

regress: replace unportable ln -h option with rm && ln ok stsp

update backout/cherrypick regress for worktree UUID output ok stsp@

show worktree UUID in backout/cherrypick -l output When run from the repository, display the UUID to help the user know which logmsg refs belong to which work tree. Also, use "backout" or "cherrypick" in the log message header to distinguish output from 'got log'. Suggested by stsp on irc. ok stsp@

uppercase cherrypick/backout -X progress output ok jamsek

regress for new backout/cherrypick logmsg references Tests only cover the -lX interface to list and delete logmsg refs created by previous backout and cherrypick operations. Further tests are needed for revert and commit coverage to ensure that the correct log messages of bo/cy commits are loaded into the editor when 'got commit' is run, and that only the refs used to populate the editor for the new commit are deleted. Potential printf issues observed by op remain in the diff; noted here as a reminder to do a sweep at some point in the future as there are other such instances in cherrypick.sh and possibly elsewhere in regress. Reviewed as part of previous commit introducing logmsg ref support for backed-out/cherrypicked commits. ok stsp@

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@

fix regression test failures with Git 3.30.5 / 2.38.1 or later installed The fix for CVE-2022-39253 in Git made our regression tests fail since creating submodules from local clones is no longer allowed by default. Add an override to our invocations of "git submodule add", the same which was added to Git's regression test suite as part of their fix. This CVE doesn't otherwise affect us. We do not implement submodules. Our use of them in regression tests exists only to ensure that Got does not freak out when it sees one. Precisely because automated support for nested repositories and/or working copies (as in Git Submodules, or Subversion Externals, etc.) have been an endless source of security problems in other systems. sudden test failures pointed out by naddy@

remove trailing whitespace; patch by Josiah Frentsos

always show commit or tree IDs in diff header, in order to help 'got patch' The idea is that got patch can simply look for a line such as: commit - abcde1234567... to find the merge base commit ID to show in diff3 conflict markers. got log -p now displays commit IDs in its diff header, instead ofl tree or blob IDs. ok op@

set `ret' in a few places where it was forgotten; ok tracey@

don't pass $ret to test_done on failure when it's known to be zero Otherwise the test directory it's not left in place; ok tracey@

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.

simpler fix equivalent to the previous commit

make test_cherrypick_root_commit pass with GOT_TEST_PACK=1