From: SZEDER Gábor Date: Mon, 24 Jun 2013 16:39:22 GMT Subject: [PATCHv3 12/16] bash prompt: use bash builtins to check for unborn branch for dirty state Message-ID: <1372091966-19315-13-git-send-email-szeder@ira.uka.de> In-Reply-To: <1372091966-19315-1-git-send-email-szeder@ira.uka.de> 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 --- contrib/completion/git-prompt.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh index 88d6121d..6e8f486e 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="#" -- 1.8.3.1.599.g4459181