RE: How to watch files in a Git repository

>On Mon, Jun 06, 2022 at 06:04:11PM +0200, R. Diez wrote:
>
>> If there is nothing of the sort, I could write my own script in Bash
>> or Perl. I can handle cron and sending e-mails, but I do not know much
>> about Git's internals. Could someone provide a few pointers about how
>> to code this? I would expect there is some command to list commits,
>> and all files touched by a particular commit. And there would be some
>> way to interface with Bash or Perl, which does not need parsing
>> complicated text output from Git.
>
>This sounds kind of like git-multimail:
>
>  https://github.com/git-multimail/git-multimail
>
>That's usually triggered from a hook, I think, but it would not be hard to trigger it
>with arbitrary segments of history.
>
>You'd probably want to keep a "seen" ref of processed commits, and move from
>that, like:
>
>  # assuming you just care about one branch on the remote, but this
>  # concept can be extended to several
>  branch=refs/remotes/origin/main
>  seen=refs/heads/seen
>
>  git fetch
>
>  # I don't know what git-multimail expects, but this is similar to what
>  # a server-side receive hook would show
>  echo "$(git rev-parse $seen) $(git rev-parse $branch) $branch" |
>  some-git-multimail-command
>
>  # now move your pointer forward for next time
>  git update-ref $seen $branch
>
>If multimail doesn't do what you want, then you can probably just script
>around:
>
>  git rev-list $seen..$branch -- $paths_you_care_about |
>  git diff-tree --stdin -r --name-only --format="Commit %h touched: " --
>$paths_you_care_about
>
>depending how you want to format things.