[PATCH] Change git-branch to list branches

If no argument provided to `git branch`, show available branches and
mark current branch with star.

This is based on patch written by Amos Waterland <apw@rossby.metr.ou.edu>.

[jc: and I changed it to handle subdirectories under refs/heads/ as well.]

Signed-off-by: Kalle Valo <Kalle.Valo@iki.fi>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/git-branch-script b/git-branch-script
index 041ca51..a6dfeaf 100755 (executable)
--- a/git-branch-script
+++ b/git-branch-script
@@ -2,16 +2,31 @@
 
 . git-sh-setup-script || die "Not a git archive"
 
-branchname="$1"
-case "$2" in
-'')
+case "$#" in
+0)
+       headref=$(readlink "$GIT_DIR/HEAD" | sed -e 's|^refs/heads/||')
+       git-rev-parse --symbolic --all |
+       sed -ne 's|^refs/heads/||p' |
+       sort |
+       while read ref
+       do
+               if test "$headref" = "$ref"
+               then
+                       pfx='*'
+               else
+                       pfx=' '
+               fi
+               echo "$pfx $ref"
+       done
+       exit 0 ;;
+1)
        head=HEAD ;;
-*)
+2)
        head="$2^0" ;;
 esac
+branchname="$1"
 rev=$(git-rev-parse --revs-only --verify "$head") || exit
 
-[ -z "$branchname" ] && die "git branch: I want a branch name"
 [ -e "$GIT_DIR/refs/heads/$branchname" ] && die "$branchname already exists"
 
 echo $rev > "$GIT_DIR/refs/heads/$branchname"