cmd_merge is the only subcommand that may create commits that doesn't parse the git config files, thusly failing for users without GOT_AUTHOR defined. Problem reported by James Cook who also provided an initial test case, thanks! ok jamsek

As per stsp's suggestion and building on his initial diff, add the -C option to enable creating commits with unresolved conflicts to the commit, histedit, merge, and rebase commands to allow continuing the operation despite files in conflict status. Also, only search for conflict markers in newly added lines to enable working with files already under version control that may have conflict markers embedded verbatim. lots of tweaks, improvements, and initial diff + ok stsp@

Implement stsp's suggestion to only fetch remote's HEAD if the symref refs/remote/*/HEAD exists, and its target no longer matches the remote HEAD. This ensures users tracking a project won't miss a change in HEAD, while also fixing the issue reported by naddy where HEAD was fetched by default even though a specific, potentially less active, branch is cloned, resulting in a repository with more commits than necessary. In addition, unless 'got fetch -b <branch>' is used, the remote HEAD branch will be fetched if branches are not set in got.conf and there is no work tree to ascertain a branch, or said branches are not found on the server. ok stsp@

As pointed out by naddy, this behaviour is not ideal when users want to limit their repository to a particular branch which will diverge from HEAD over time, such as -stable branches. See https://marc.gameoftrees.org/mail/1676388048.8632_0.html

Rather than only fetch HEAD when there are no branches set in got.conf and there is no branch to be inferred from a work tree, or said branches don't exist on the server, always fetch HEAD unless 'got fetch -b branch' is used. ok stsp@

As discussed with op and stsp on irc, this prevents the valid case of changing a commit's author to yourself during a histedit operation, and potentially blocks other valid use cases too. ok stsp@ and op@

In the case of tog move setlocale(3) before pledge(2), as suggested by stsp. ok stsp@

As discussed on irc, this drops the implicit remote HEAD fetch when -b is used. got.1 has been updated to make the new fetch behaviour clear. ok stsp@

ok jamsek

As identified and suggested by stsp, with the previous commit, 'strip_comments' is now always set thus no longer needed. ok stsp@

As suggested by naddy: consider commit log messages valid provided the temp file time stamp has changed and the file is not empty. This heuristic provides the desired behaviour (i.e., reusing cherrypicked/backed-out log messages) that's currently provided but is simpler to grok. Improved by and ok stsp@

This supports use of cherrypick/backout without requiring the user to modify the log message of the original commit. ok jamsek, op

ok jamsek

Without branches in got.conf for a remote, and without -b/-R options, the fallback to HEAD would only work when not invoked in a work tree. With this fix 'got fetch' should behave as described in the man page. The -b option now overrides both got.conf and the fallback to the work tree's branch. And fallback to HEAD works as expected when invoked in a repository. Also, do not strictly require remote repositories to provide a branch from the refs/heads/ namespace. In such cases users should be able to use -R to select something to fetch. ok jamsek