wildmatch test: use a paranoia pattern from nul_match()

diff --git a/t/t4018-diff-funcname.sh b/t/t4018-diff-funcname.sh
index 67373dc44ef18ae4c58f237ed9f5c7610ec6413c..1795ffc3aaf3008f3ef3adc566803a66603975dd 100755 (executable)
--- a/t/t4018-diff-funcname.sh
+++ b/t/t4018-diff-funcname.sh
@@ -30,6 +30,7 @@ diffpatterns="
        bibtex
        cpp
        csharp
+       css
        fortran
        fountain
        html