Re: [PATCH v4] completion: ignore chpwd_functions when cding on zsh

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

Brandon Turner <bt@brandonturner.net> writes:

> As Øystein pointed out, on zsh we can use "cd -q" to ignore
> chpwd_functions.
>
> Junio - from my testing, unsetting CDPATH is sufficient on zsh.

Let's do this instead, though.

Bugs are mine; as I do not use zsh myself, some testing is very much
appreciated.

Thanks.

-- >8 --
Subject: [PATCH] completion: use "git -C $there" instead of (cd $there && git ...)

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).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 contrib/completion/git-completion.bash | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index dba3c15..42f7308 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
 }
 
 
-- 
2.1.2-464-g5e996a3