fix grep test false positive
diff --git a/testsuite/grep.tests b/testsuite/grep.tests
index bb682db..4703ae5 100755
--- a/testsuite/grep.tests
+++ b/testsuite/grep.tests
@@ -26,7 +26,9 @@
testing "grep input (specify file)" "grep two input" "two\n" \
"one\ntwo\nthree\nthree\nthree\n" ""
-testing "grep (no newline at EOL)" "grep bug" "bug" "bug" ""
+# GNU grep (version?) outputs a new line character after the located string
+# even if there is no new line character in the input
+testing "grep (no newline at EOL)" "grep bug input" "bug\n" "bug" ""
>empty
testing "grep two files" "grep two input empty 2>/dev/null" \