1 files changed, 33 insertions, 0 deletions
diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index 2c1f7373e6..a6011f9b1d 100755
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -982,6 +982,39 @@ test_expect_success 'grep -e -- -- path' '
 	test_cmp expected actual
 '
 
+test_expect_success 'dashdash disambiguates rev as rev' '
+	test_when_finished "rm -f master" &&
+	echo content >master &&
+	echo master:hello.c >expect &&
+	git grep -l o master -- hello.c >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'dashdash disambiguates pathspec as pathspec' '
+	test_when_finished "git rm -f master" &&
+	echo content >master &&
+	git add master &&
+	echo master:content >expect &&
+	git grep o -- master >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'report bogus arg without dashdash' '
+	test_must_fail git grep o does-not-exist
+'
+
+test_expect_success 'report bogus rev with dashdash' '
+	test_must_fail git grep o hello.c --
+'
+
+test_expect_success 'allow non-existent path with dashdash' '
+	# We need a real match so grep exits with success.
+	tree=$(git ls-tree HEAD |
+	       sed s/hello.c/not-in-working-tree/ |
+	       git mktree) &&
+	git grep o "$tree" -- not-in-working-tree
+'
+
 test_expect_success 'grep --no-index pattern -- path' '
 	rm -fr non &&
 	mkdir -p non/git &&