Subject: Re: [PATCH 1/4] builtin/history: perform revwalk checks before asking for user input

From: Patrick Steinhardt <[email-masked]>
Date: Fri, 13 Feb 2026 06:51:05 +0100

On Thu, Feb 12, 2026 at 12:04:50PM -0800, Junio C Hamano wrote:
> Patrick Steinhardt <[email-masked]> writes:
> > diff --git a/t/t3451-history-reword.sh b/t/t3451-history-reword.sh
> > index 3594421b68..6775ed62f9 100755
> > --- a/t/t3451-history-reword.sh
> > +++ b/t/t3451-history-reword.sh
> > @@ -263,7 +263,7 @@ test_expect_success '--ref-action=head updates only HEAD' '
> >  
> >  		# When told to update HEAD, only, the command will refuse to
> >  		# rewrite commits that are not an ancestor of HEAD.
> > -		test_must_fail git history reword --ref-action=head theirs 2>err &&
> > +		test_must_fail git -c core.editor=false history reword --ref-action=head theirs 2>err &&
> >  		test_grep "rewritten commit must be an ancestor of HEAD" err &&
> 
> This ensures that the editor is never consulted?  How?  Running the
> "false" editor would give us a different error, like "your editor
> exited with non-zero status, telling us to abort" or something?

Yup, exactly that. We'd see "Aborting commit as launching the editor
failed." instead of the above error message.

Patrick