Re: Why git-revert doesn't invoke the pre-commit and the commit-msg hooks?

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Hi Gustavo

On 19/02/18 14:50, Gustavo Chaves wrote:
> 
> I asked this question on StackOverflow and got an answer:
> https://stackoverflow.com/q/48852925/114983
> 
> The problem is that git-revert invokes git-commit with the -n flag,
> explicitly avoiding the pre-commit and the commit-msg hooks.
> 
> This was originally introduced on commit 9fa4db544e2e, by Junio
> Hamano, in 2005! The rationale in the commit message was the
> following:
> 
>>> Do not verify reverted/cherry-picked/rebased patches.
> 
>>> The original committer may have used validation criteria that is less
>>> stricter than yours.  You do not want to lose the changes even if they
>>> are done in substandard way from your 'commit -v' verifier's point of
>>> view.
> 
> I get it, but since by default you are allowed to edit the commit
> message during a git-revert I think there's a case to be made to make
> the pre-commit and the commit-msg being invoked by default. Also,
> git-revert introduces new lines in the original commit message, and
> they could be used to trigger specific checks, such as the one I
> wanted to implement, to deny commits reverting merge-commits.
> 
> Shouldn't git-revert work exactly as git-commit? Instead of disabling
> hooks by default, it could accept the --no-verify flag just like
> git-commit to disable the hooks if the user wants it.
> 

I think you're right that cherry-pick and revert should not be passing
--no-verify when the commit message is being edited (I was surprised to
see that they were). I wonder if it's worth getting rid of the
VERIFY_MSG flag completely and just set --no-verify if EDIT_MSG isn't
set to avoid these problems in the future. I'm worried though that
someone out there is scripting with a non-interactive editor which may
break if we start verifying the message so maybe the default should be
changed and a --no-verify option added to cherry-pick and revert
instead. They'd have to change their script but at least it would work
and everyone else would get the behaviour they probably expect.

Best Wishes

Phillip




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