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

diff --git a/git-tag.sh b/git-tag.sh
index ac269e3277d9b8c844e8c43b95695375dd829746..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=
@@ -37,6 +38,12 @@ do
        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
@@ -83,7 +90,7 @@ tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
 trap 'rm -f "$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
@@ -95,7 +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
     }