onig_parse_make_tree 5301 ext/mbstring/oniguruma/regcomp.c   r = onig_parse_make_tree(&root, pattern, pattern_end, reg, &scan_env);
onig_parse_make_tree  342 ext/mbstring/oniguruma/regparse.h extern int    onig_parse_make_tree P_((Node** root, const UChar* pattern, const UChar* end, regex_t* reg, ScanEnv* env));