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From: Jonathan Nieder <>
To: Magne Land <>
Subject: Re: [PATCH] Documentation/githooks: Clarify the behavior of post-checkout hook
Date: Tue, 13 Mar 2018 17:38:16 -0700
Message-ID: <> (raw)
In-Reply-To: <>


Magne Land wrote:

> From: Magne Land <>
> This can happen when using 'git rebase -i’:
> could not detach HEAD
> Based on discovering this Stack Overflow discussion:
> ---
>  Documentation/githooks.txt | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Thanks for investigating and writing this.

May we forge your sign-off?  See Documentation/SubmittingPatches
section [[sign-off] 'Certify your work' for more about what this

The above leaves one question unanswered: is this the *right* behavior
for "git checkout" to have?  I.e. is it useful for "git checkout" to
fail when the post-checkout hook fails, or would it be better for it
to e.g. simply print a message and exit with status 0?

Not a rhetorical question: I'm asking because I don't know the answer.
What do you think?


> --- a/Documentation/githooks.txt
> +++ b/Documentation/githooks.txt
> @@ -166,7 +166,9 @@ worktree.  The hook is given three parameters: the ref of the previous HEAD,
>  the ref of the new HEAD (which may or may not have changed), and a flag
>  indicating whether the checkout was a branch checkout (changing branches,
>  flag=1) or a file checkout (retrieving a file from the index, flag=0).
> -This hook cannot affect the outcome of 'git checkout'.
> +
> +If this hook exits with a non-zero status, 'git checkout' will exit with the
> +same status.
>  It is also run after 'git clone', unless the --no-checkout (-n) option is
>  used. The first parameter given to the hook is the null-ref, the second the

      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-13 19:59 Magne Land
2018-03-14  0:38 ` Jonathan Nieder [this message]

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