From cf631b0c9dc0158a126ef201a309042c14beeee6 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 7 Oct 2015 21:22:46 +0100
Subject: [PATCH] git-branchmove: new script, still work in progress

---
 scripts/git-branchmove | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/scripts/git-branchmove b/scripts/git-branchmove
index 029992d..e68c474 100755
--- a/scripts/git-branchmove
+++ b/scripts/git-branchmove
@@ -61,7 +61,7 @@ get)
 	src_path="$remote_path"
 	dst_rune="sh -c"
 	dst_path=.
-	msg="git-branchmove: moved to $remote ($remoteurl)" ;;
+	updatemsg="git-branchmove: moved to $remote ($remoteurl)"
 	push_fetch=fetch
 	;;
 put)
@@ -69,7 +69,7 @@ put)
 	dst_path="$remote_path"
 	src_rune="sh -c"
 	src_path=.
-	msg="git-branchmove; moved to `hostname -f` by `whoami`" ;;
+	updatemsg="git-branchmove; moved to `hostname -f` by `whoami`"
 	push_fetch=push
 	;;
 esac
@@ -116,6 +116,12 @@ H) ;; # already detached
 	;;
 esac
 
+
+if [ "${#src_branches[@]}" = 0 ]; then
+	echo >&2 "git-branchmove: nothing to do"
+	exit 1
+fi
+
 dst_branches=( $(on_dst "$get_branches_rune") )
 : "${dst_branches[@]}"
 
@@ -157,16 +163,16 @@ esac
 #----- delete the refs on the source -----
 
 (
-	printf "%s\n" "$message"
+	printf "%s\n" "$updatemsg"
 	for src_rm in "${src_branches[@]}"; do printf "%s\n" "$src_rm"; done
 ) | on_src '
-	read message
+	read updatemsg
 	while read src_rm; do
 		src_ref="${src_rm%=*}"
 		src_obj="${src_rm##*=}"
-		git update-ref -m "$message" -d "$src_ref" "$src_obj"
+		git update-ref -m "$updatemsg" -d "$src_ref" "$src_obj"
 		echo "move complete: $src_ref"
 	done
 '
 
-echo 'moved ${#src_branches[@]} branches.'
+echo "moved ${#src_branches[@]} branches."
-- 
2.30.2