Re: [PATCH v4] completion: ignore chpwd_functions when cding on zsh
Brandon Turner <bt@brandonturner.net> writes:
Show 10 quoted lines
> On Thu, Oct 9, 2014 at 3:45 PM, Junio C Hamano <gitster@pobox.com> wrote:
>>
>> Bugs are mine; as I do not use zsh myself, some testing is very much
>> appreciated.
>
> I've tested this patch in zsh and it fixes the original problem. I've
> also tested various scenarios in bash and zsh (CDPATH set, different
> places within repos, etc.) and see no problems.
>
> Thanks for all of the help Junio and Øystein.
Actually the patch was slightly wrong. It did not quite matter as "cd ''" is a no-op, but "git -C '' cmd" is not that lenient (which may be something we may want to fix) and breaks t9902 by exposing an existing breakage in the callchain.
Here is a replacement.
-- >8 --
From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 9 Oct 2014 13:45:21 -0700
Subject: [PATCH] completion: use "git -C $there" instead of (cd $there && git
...)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We have had "git -C $there" to first go to a different directory and run a Git command without changing the arguments for quite some time. Use it instead of (cd $there && git ...) in the completion script.
This allows us to lose the work-around for misfeatures of modern interactive-minded shells that make "cd" unusable in scripts (e.g. end users' $CDPATH taking us to unexpected places in any POSIX shell, and chpwd functions spewing unwanted output in zsh).
Based on Øystein Walle's idea, which was raised during the discussion on the solution by Brandon Turner for a problem zsh users had with RVM which mucks with chpwd_functions in users' environments (https://github.com/wayneeseguin/rvm/issues/3076).
As $root variable, which is used to direct where to chdir to, is set to "." based on if $2 to __git_index_files is set (not if it is empty), the only caller of the function is fixed not to pass the optional $2 when it does not want us to switch to a different directory. Otherwise we would end up doing "git -C '' command...", which would not work.
Maybe we would want "git -C '' command..." to mean "do not chdir anywhere", but that is a spearate topic.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
contrib/completion/git-completion.bash | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
Show changes to contrib/completion/git-completion.bash +7 −11
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index dba3c15..6077925 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -263,16 +263,12 @@ __gitcomp_file ()
# argument, and using the options specified in the second argument.
__git_ls_files_helper ()
{
- (
- test -n "${CDPATH+set}" && unset CDPATH
- cd "$1"
- if [ "$2" == "--committable" ]; then
- git diff-index --name-only --relative HEAD
- else
- # NOTE: $2 is not quoted in order to support multiple options
- git ls-files --exclude-standard $2
- fi
- ) 2>/dev/null
+ if [ "$2" == "--committable" ]; then
+ git -C "$1" diff-index --name-only --relative HEAD
+ else
+ # NOTE: $2 is not quoted in order to support multiple options
+ git -C "$1" ls-files --exclude-standard $2
+ fi 2>/dev/null
}
@@ -504,7 +500,7 @@ __git_complete_index_file ()
;;
esac
- __gitcomp_file "$(__git_index_files "$1" "$pfx")" "$pfx" "$cur_"
+ __gitcomp_file "$(__git_index_files "$1" ${pfx:+"$pfx"})" "$pfx" "$cur_"
}
__git_complete_file ()
--
2.1.2-466-g338ee7a
Brandon Turner
