Suggest use of "git add file1 file2" when there is nothing to commit.

diff --git a/git-tag.sh b/git-tag.sh
index 76e51ed174c3f8e752d221374ec83b1f1db7fde5..d53f94cd9c618e9c2032d3e6ad7af9f3866e7707 100755 (executable)
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -5,6 +5,7 @@ USAGE='-l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d] [-m <msg>] <tagname> [
 SUBDIRECTORY_OK='Yes'
 . git-sh-setup
 
+message_given=
 annotate=
 signed=
 force=
@@ -25,20 +26,24 @@ do
        force=1
        ;;
     -l)
-        cd "$GIT_DIR/refs" &&
        case "$#" in
        1)
-               find tags -type f -print ;;
-       *)
-               shift
-               find tags -type f -print | grep "$@" ;;
+               set x . ;;
        esac
+       shift
+       git rev-parse --symbolic --tags | sort | grep "$@"
        exit $?
        ;;
     -m)
        annotate=1
        shift
        message="$1"
+       if test "$#" = "0"; then
+           die "error: option -m needs an argument"
+           exit 2
+       else
+           message_given=1
+       fi
        ;;
     -u)
        annotate=1
@@ -49,8 +54,10 @@ do
     -d)
        shift
        tag_name="$1"
-       rm "$GIT_DIR/refs/tags/$tag_name" && \
-               echo "Deleted tag $tag_name."
+       tag=$(git-show-ref --verify --hash -- "refs/tags/$tag_name") ||
+               die "Seriously, what tag are you talking about?"
+       git-update-ref -m 'tag: delete' -d "refs/tags/$tag_name" "$tag" &&
+               echo "Deleted tag $tag_name."
        exit $?
        ;;
     -*)
@@ -65,8 +72,11 @@ done
 
 name="$1"
 [ "$name" ] || usage
-if [ -e "$GIT_DIR/refs/tags/$name" -a -z "$force" ]; then
-    die "tag '$name' already exists"
+prev=0000000000000000000000000000000000000000
+if git-show-ref --verify --quiet -- "refs/tags/$name"
+then
+    test -n "$force" || die "tag '$name' already exists"
+    prev=`git rev-parse "refs/tags/$name"`
 fi
 shift
 git-check-ref-format "tags/$name" ||
@@ -75,12 +85,12 @@ git-check-ref-format "tags/$name" ||
 object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
 type=$(git-cat-file -t $object) || exit 1
 tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
-: ${username:=$(expr "$tagger" : '\(.*>\)')}
+: ${username:=$(expr "z$tagger" : 'z\(.*>\)')}
 
 trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
 
 if [ "$annotate" ]; then
-    if [ -z "$message" ]; then
+    if [ -z "$message_given" ]; then
         ( echo "#"
           echo "# Write a tag message"
           echo "#" ) > "$GIT_DIR"/TAG_EDITMSG
@@ -92,7 +102,7 @@ if [ "$annotate" ]; then
     grep -v '^#' <"$GIT_DIR"/TAG_EDITMSG |
     git-stripspace >"$GIT_DIR"/TAG_FINALMSG
 
-    [ -s "$GIT_DIR"/TAG_FINALMSG ] || {
+    [ -s "$GIT_DIR"/TAG_FINALMSG -o -n "$message_given" ] || {
        echo >&2 "No tag message?"
        exit 1
     }
@@ -109,6 +119,5 @@ if [ "$annotate" ]; then
     object=$(git-mktag < "$GIT_DIR"/TAG_TMP)
 fi
 
-leading=`expr "refs/tags/$name" : '\(.*\)/'` &&
-mkdir -p "$GIT_DIR/$leading" &&
-echo $object > "$GIT_DIR/refs/tags/$name"
+git update-ref "refs/tags/$name" "$object" "$prev"
+