CallNode          392 ext/mbstring/oniguruma/regcomp.c compile_call(CallNode* node, regex_t* reg)
CallNode         3006 ext/mbstring/oniguruma/regcomp.c       CallNode* cn = NCALL(node);
CallNode         6233 ext/mbstring/oniguruma/regcomp.c       CallNode* cn = NCALL(node);
CallNode          265 ext/mbstring/oniguruma/regparse.h     CallNode     call;