add test cases

diff --git a/test/testc.c b/test/testc.c
index 5e5a7b471261f70ebe4ed848345f5da194306822..6a7d9032ddfab80e79bc38344308866ea41f5c07 100644 (file)
--- a/test/testc.c
+++ b/test/testc.c
@@ -588,6 +588,8 @@ extern int main(int argc, char* argv[])
   x2("\\o{101}", "A", 0, 1);
   x2("(?:\\k'+1'B|(A)C)*", "ACAB", 0, 4); // relative backref by postitive number
   x2("\\g<+2>(abc)(ABC){0}", "ABCabc", 0, 6); // relative call by positive number
+  x2("A\\g'0'|B()", "AAAAB", 0, 5);
+  x3("(A\\g'0')|B", "AAAAB", 0, 5, 1);
 
   x2("", "¤¢", 0, 0);
   x2("¤¢", "¤¢", 0, 2);