userdiff: support new keywords in PHP hunk header

Recent version of PHP supports interface, trait, abstract class and
final class.  This patch fixes the PHP hunk header regexp to support
all of these keywords.

Signed-off-by: Kana Natsuno <dev@whileimautomaton.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/t/t4018/php-abstract-class b/t/t4018/php-abstract-class
new file mode 100644
index 0000000000..5213e12494
--- /dev/null
+++ b/t/t4018/php-abstract-class
@@ -0,0 +1,4 @@
+abstract class RIGHT
+{
+    const FOO = 'ChangeMe';
+}