Suggested patch:
%%%
diff --git a/src/diff.c b/src/diff.c
index 76851ac..9db7005 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -818,7 +818,18 @@ add_regexp (struct regexp_list *reglist, char const
*pattern)
char const *m = re_compile_pattern (pattern, patle
Upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=21442
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