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-rw-r--r--test/test_utf8.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/test_utf8.c b/test/test_utf8.c
index 286158d..bd3ed16 100644
--- a/test/test_utf8.c
+++ b/test/test_utf8.c
@@ -595,6 +595,10 @@ extern int main(int argc, char* argv[])
x2("a\\Kb", "ab", 1, 2);
x2("(a\\Kb|ac\\Kd)", "acd", 2, 3);
x2("(a\\Kb|\\Kac\\K)*", "acababacab", 9, 10);
+ x2("(?:()|())*\\1", "abc", 0, 0);
+ x2("(?:()|())*\\2", "abc", 0, 0);
+ x2("(?:()|()|())*\\3\\1", "abc", 0, 0);
+ x2("(|(?:a(?:\\g'1')*))b|", "abc", 0, 2);
x2("(?~)", "", 0, 0);
x2("(?~)", "A", 0, 0);