has_recursion    3627 ext/mbstring/oniguruma/regcomp.c       env->has_recursion = 1;
has_recursion    5360 ext/mbstring/oniguruma/regcomp.c     if (scan_env.has_recursion != 0) {
has_recursion     949 ext/mbstring/oniguruma/regparse.c   env->has_recursion       = 0;
has_recursion     307 ext/mbstring/oniguruma/regparse.h   int has_recursion;