git am: Display some help text when patch is empty

When a patch is found to be empty, prompt the user to use either
--skip or --abort.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/git-am.sh b/git-am.sh
index 83a0df0352..b6068df6bf 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -592,6 +592,8 @@ do
 
 		test -s "$dotest/patch" || {
 			echo "Patch is empty.  Was it split wrong?"
+			echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
+			echo "To restore the original branch and stop patching run \"$cmdline --abort\"."
 			stop_here $this
 		}
 		rm -f "$dotest/original-commit"