Re: [PATCH 0/3] pre-merge-hook

[Junio C Hamano <gitster@pobox.com>]

Michael J Gruber <git@drmicha.warpmail.net> writes:

> The pre-commit hook is often used to ensure certain properties of each
> comitted tree like formatting or coding standards, validity (lint/make)
> or code quality (make test). But merges introduce new commits unless
> they are fast forwards, and therefore they can break these properties
> because the pre-commit hook is not run by "git merge".
>
> Introduce a pre-merge hook which works for (non ff, automatic) merges
> like pre-commit does for commits. Typically this will just call the
> pre-commit hook (like in the sample hook), but it does not need to.

When your merge asks for a help from you to resolve conflict, you
conclude with "git commit", and at that point, pre-commit hook will
have a chance to reject it, presumably.  That means for any project
that wants to audit a merge via hook, their pre-commit hook MUST be
prepared to look at and judge a merge.  Given that, is a separate
hook that "can just call the pre-commit but does not need to" really
needed and useful?

I admit that I haven't thought things through, but adding a boolean
"merge.usePreCommitHook" smells like a more appropriate approach to
me.

I dunno.