From 16c1f0d3dc7aaffc05cb9d95b6d66d0a76a19853 Mon Sep 17 00:00:00 2001
From: spacewander <spacewanderlzx@gmail.com>
Date: Wed, 16 Dec 2020 18:01:30 +0800
Subject: [PATCH] git-summary: reject invalid option

Argument starts with '-' can't be committish, so we can safely reject
it.
---
 bin/git-summary | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bin/git-summary b/bin/git-summary
index 58f1788..003019d 100755
--- a/bin/git-summary
+++ b/bin/git-summary
@@ -13,6 +13,10 @@ for arg in "$@"; do
         --dedup-by-email)
             DEDUP_BY_EMAIL=1
             ;;
+        -*)
+            >&2 echo "unknown argument $arg found"
+            exit 1
+            ;;
         *)
             # set the argument back
             set -- "$@" "$arg"