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From: "SZEDER Gábor" <szeder@ira.uka.de>
To: git@vger.kernel.org
Cc: "SZEDER Gábor" <szeder@ira.uka.de>
Subject: [PATCH 12/19] bash prompt: use bash builtins to check whether inside git dir
Date: Wed,  9 May 2012 02:44:43 +0200	[thread overview]
Message-ID: <1336524290-30023-13-git-send-email-szeder@ira.uka.de> (raw)
In-Reply-To: <1336524290-30023-1-git-send-email-szeder@ira.uka.de>

__git_ps1() runs the '$(git rev-parse --is-inside-git-dir)' command
substitution to check whether we are inside a .git directory and the
bash prompt needs to be adjusted accordingly (i.e. display 'BARE!' or
'GIT_DIR!').  This imposes the overhead of fork()ing a subshell and
fork()+exec()ing a git process.

Perform this check by comparing the path to the repository and the
current directory using only bash builtins, thereby sparing all that
fork()+exec() overhead.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
---
 contrib/completion/git-completion.bash | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index ed372c41..72f7d0ed 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -323,7 +323,11 @@ __git_ps1 ()
 	local c=""
 	local p=""
 
-	if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
+	local pwd_p
+	__git_pwd_p pwd_p
+	# inside .git dir?
+	if [ "$__git_dir" = "." -o \
+			"${pwd_p#$__git_dir}" != "$pwd_p" ]; then
 		if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
 			c="BARE:"
 		else
-- 
1.7.10.1.541.gb1be298

  parent reply	other threads:[~2012-05-09  0:47 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-09  0:44 [PATCH 00/19] Bash prompt speedup SZEDER Gábor
2012-05-09  0:44 ` [PATCH 01/19] tests: move code to run tests under bash into a helper library SZEDER Gábor
2012-05-09  0:44 ` [PATCH 02/19] tests: add tests for the bash prompt functions in the completion script SZEDER Gábor
2012-05-09  8:07   ` Johannes Sixt
2012-05-09 18:08     ` Junio C Hamano
2012-05-10  6:09       ` Johannes Sixt
2012-05-09 18:36   ` Junio C Hamano
2012-05-09 20:33     ` SZEDER Gábor
2012-05-09  0:44 ` [PATCH 03/19] completion: use __gitdir() in _git_log() SZEDER Gábor
2012-05-09 18:41   ` Junio C Hamano
2012-05-09 19:01     ` SZEDER Gábor
2012-05-09  0:44 ` [PATCH 04/19] completion: respect $GIT_DIR SZEDER Gábor
2012-05-09  8:09   ` Johannes Sixt
2012-05-09 18:54   ` Junio C Hamano
2012-05-09  0:44 ` [PATCH 05/19] bash prompt: don't show the prompt when .git/HEAD is unreadable SZEDER Gábor
2012-05-09 19:32   ` Junio C Hamano
2012-05-09 19:45     ` SZEDER Gábor
2012-05-09  0:44 ` [PATCH 06/19] bash prompt: return early from __git_ps1() when not in a git repository SZEDER Gábor
2012-05-09  0:44 ` [PATCH 07/19] completion: make __gitdir() store repository path in $__git_dir SZEDER Gábor
2012-05-09 19:36   ` Junio C Hamano
2012-05-09  0:44 ` [PATCH 08/19] completion: use $__git_dir instead of $(__gitdir) SZEDER Gábor
2012-05-09 19:43   ` Junio C Hamano
2012-05-09 20:22     ` SZEDER Gábor
2012-05-09 20:56       ` Junio C Hamano
2012-05-09 21:36         ` SZEDER Gábor
2012-05-09  0:44 ` [RFC PATCH 09/19] completion: platform-specific helper function to get physical path SZEDER Gábor
2012-05-09  7:37   ` Johannes Sixt
2012-05-09  0:44 ` [PATCH 10/19] completion: use bash builtins to search for repository SZEDER Gábor
2012-05-09 19:52   ` Junio C Hamano
2012-05-09 22:34     ` SZEDER Gábor
2012-05-09 22:59       ` Junio C Hamano
2012-05-09  0:44 ` [PATCH 11/19] bash prompt: use bash builtins to find out current branch SZEDER Gábor
2012-05-09 20:02   ` Junio C Hamano
2012-05-09 21:11     ` SZEDER Gábor
2012-05-09 21:25       ` Junio C Hamano
2012-05-09 21:45         ` SZEDER Gábor
2012-05-09 21:50           ` Junio C Hamano
2012-05-09  0:44 ` SZEDER Gábor [this message]
2012-05-09  8:07   ` [PATCH 12/19] bash prompt: use bash builtins to check whether inside git dir Johannes Sixt
2012-05-09 20:06     ` Junio C Hamano
2012-05-09  0:44 ` [PATCH 13/19] bash prompt: check whether inside the worktree only when necessary SZEDER Gábor
2012-05-09  0:44 ` [PATCH 14/19] bash prompt: use bash builtins to find out current branch during rebase SZEDER Gábor
2012-05-09  0:44 ` [PATCH 15/19] bash prompt: use bash builtins to get detached HEAD abbrev. object name SZEDER Gábor
2012-05-09  0:44 ` [PATCH 16/19] bash prompt: display stash and upstream state even inside the repository SZEDER Gábor
2012-05-09  0:44 ` [PATCH 17/19] bash prompt: use bash builtins to check stash state SZEDER Gábor
2012-05-09  0:44 ` [RFC PATCH 18/19] bash prompt: avoid command substitution when checking for untracked files SZEDER Gábor
2012-05-09 20:32   ` Junio C Hamano
2012-05-09  0:44 ` [PATCH 19/19] bash prompt: alternative git prompt without command substitution SZEDER Gábor
2012-05-09 19:38   ` Andrew Sayers
2012-05-09 22:08     ` SZEDER Gábor

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