userdiff tests: explicitly test "default" pattern

Since 122aa6f9c0 (diff: introduce diff.<driver>.binary, 2008-10-05)
the internals of the userdiff.c code have understood a "default" name,
which is invoked as userdiff_find_by_name("default") and present in
the "builtin_drivers" struct. Let's test for this special case.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t4018-diff-funcname.sh b/t/t4018-diff-funcname.sh
index 9675bc17db276a51b1c5dc1b64ff1e94e1b0fc09..cefe329aea7702120036a485c0072acab96e5d11 100755 (executable)
--- a/t/t4018-diff-funcname.sh
+++ b/t/t4018-diff-funcname.sh
@@ -49,6 +49,7 @@ diffpatterns="
        ruby
        rust
        tex
+       default
        custom1
        custom2
        custom3