Re: Non-interactively rewording commit messages

[Konstantin Ryabitsev <konstantin@linuxfoundation.org>]

On Thu, Jun 30, 2022 at 07:34:54PM +0200, Christian Couder wrote:
> > Hello, all:
> >
> > What's the best approach to non-interactively rewrite specific commit
> > messages? In this particular case, I am trying to automatically retrieve code
> > review trailers sent to the mailing list and put them into corresponding
> > commits.
> >
> > For example, I have a set of commits:
> >
> > abcabc: This commit does foo
> > bcdbcd: This commit does bar
> > cdecde: This commit does baz
> >
> > They were all sent to the mailing list and a maintainer sent a "Reviewed-by"
> > to the second commit. In a usual interactive rebase session this would be:
> >
> > pick abcabc
> > reword bcdbcd
> > pick cdecde
> >
> > When the edit screen comes up for the bcdbcd commit, the author would manually
> > stick the new trailer into the commit message. However, I can automate all
> > that away with b4 -- just need a sane strategy for non-interactively rewriting
> > entire commit messages at arbitrary points in the recent history.
> >
> > Any pointers?
> 
> Have you tried `git interpret-trailers`?

I'm aware of interpret-trailers, but unless I'm missing something large, it's
just a way of analyzing standalone text files to retrieve or insert trailers.
What I'm looking for is a way to amend arbitrary commit messages within recent
git history.

-K