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authorLibravatar SZEDER Gábor <szeder@ira.uka.de>2013-06-24 12:49:19 +0200
committerLibravatar SZEDER Gábor <szeder@ira.uka.de>2013-06-24 18:03:37 +0200
commit0f37c125814afc8ad2fa43fecd8b200216ebfab5 (patch)
tree8361a91e976b7b66f4b2ac704ca8e9b1a5dfd4aa /contrib
parentbash prompt: combine 'git rev-parse' for detached head (diff)
downloadtgif-0f37c125814afc8ad2fa43fecd8b200216ebfab5.tar.xz
bash prompt: use bash builtins to check for unborn branch for dirty state
When the dirty work tree and index status indicator is enabled, __git_ps1() checks for changes in the index by running 'git diff-index --cached --quiet HEAD --' and looking at its exit code. However, that makes sense only when HEAD points to a valid commit: on an unborn branch the failure of said command would be caused by the invalid HEAD, not by changes in the index. Therefore, __git_ps1() first checks for a valid HEAD by running 'git rev-parse --quiet --verify HEAD'. Since the previous patch we implicitly check HEAD's validity by running 'git rev-parse ... --short HEAD', making the dirty status indicator's 'git rev-parse' check redundant. It's sufficient to check for non-emptyness of the variable holding the abbreviated commit object name, thereby sparing the overhead of fork()+exec()ing a git process. Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Diffstat (limited to 'contrib')
-rw-r--r--contrib/completion/git-prompt.sh2
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
index 88d6121d2e..6e8f486e66 100644
--- a/contrib/completion/git-prompt.sh
+++ b/contrib/completion/git-prompt.sh
@@ -429,7 +429,7 @@ __git_ps1 ()
[ "$(git config --bool bash.showDirtyState)" != "false" ]
then
git diff --no-ext-diff --quiet --exit-code || w="*"
- if git rev-parse --quiet --verify HEAD >/dev/null; then
+ if [ -n "$short_sha" ]; then
git diff-index --cached --quiet HEAD -- || i="+"
else
i="#"