Merge branch 'maint-1.6.1' into maint

* maint-1.6.1:
  grep: fix segfault when "git grep '('" is given
  Documentation: fix a grammatical error in api-builtin.txt
  builtin-merge: fix a typo in an error message

1 files changed, 4 insertions, 0 deletions

diff --git a/t/t7002-grep.sh b/t/t7002-grep.sh
index c4938544d4..b81593780a 100755
--- a/t/t7002-grep.sh
+++ b/t/t7002-grep.sh
@@ -26,6 +26,10 @@ test_expect_success setup '
 	git commit -m initial
 '
 
+test_expect_success 'grep should not segfault with a bad input' '
+	test_must_fail git grep "("
+'
+
 for H in HEAD ''
 do
 	case "$H" in