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bash prompt: print unique detached HEAD abbreviated object name 

When describing a detached HEAD according to the $GIT_PS1_DESCRIBE
environment variable fails, __git_ps1() runs 'cut -c1-7 .git/HEAD' to
show the 7 hexdigits abbreviated commit object name in the prompt.
Obviously, this neither respects core.abbrev nor produces a unique
object name.

Fix this by using 'git rev-parse --short HEAD' instead and adjust the
corresponding test to use non-standard number of hexdigits.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
This commit is contained in:
SZEDER Gábor 2013-06-24 01:55:42 +02:00
parent 868dc1acec
commit e8f21caf94
2 changed files with 3 additions and 2 deletions
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2
contrib/completion/git-prompt.sh
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@ -392,7 +392,7 @@ __git_ps1 ()
git describe --tags --exact-match HEAD ;;
esac 2>/dev/null)" ||
b="$(cut -c1-7 "$g/HEAD" 2>/dev/null)..." ||
b="$(git rev-parse --short HEAD 2>/dev/null)..." ||
b="unknown"
b="($b)"
}

3
t/t9903-bash-prompt.sh
View File

@ -50,7 +50,8 @@ test_expect_success SYMLINKS 'prompt - branch name - symlink symref' '
'
test_expect_success 'prompt - detached head' '
printf " ((%s...))" $(git log -1 --format="%h" b1^) >expected &&
printf " ((%s...))" $(git log -1 --format="%h" --abbrev=13 b1^) >expected &&
test_config core.abbrev 13 &&
git checkout b1^ &&
test_when_finished "git checkout master" &&
__git_ps1 >"$actual" &&