Fix crash when reading the empty tree

diff --git a/git-commit.sh b/git-commit.sh
index 01c73bdd08e075d650e58664650bcd7fe1cd1551..26cd7ca54de2e0b4802546d2611cd379694ec005 100755 (executable)
--- a/git-commit.sh
+++ b/git-commit.sh
@@ -167,8 +167,13 @@ run_status () {
        fi
        case "$committable" in
        0)
-           echo "nothing to commit"
-           exit 1
+               case "$amend" in
+               t)
+                       echo "# No changes" ;;
+               *)
+                       echo "nothing to commit" ;;
+               esac
+               exit 1 ;;
        esac
        exit 0
     )
@@ -365,14 +370,16 @@ tt*)
   die "Only one of -c/-C/-F/-m can be used." ;;
 esac
 
-case "$#,$also$only" in
-*,tt)
+case "$#,$also,$only,$amend" in
+*,t,t,*)
   die "Only one of --include/--only can be used." ;;
-0,t)
+0,t,,* | 0,,t,)
   die "No paths with --include/--only does not make sense." ;;
-0,)
+0,,t,t)
+  only_include_assumed="# Clever... amending the last one with dirty index." ;;
+0,,,*)
   ;;
-*,)
+*,,,*)
   only_include_assumed="# Explicit paths specified without -i nor -o; assuming --only paths..."
   also=
   ;;