rb_pat_search    4552 string.c           beg = rb_pat_search(pat, str, 0, 1);
rb_pat_search    4722 string.c           beg = rb_pat_search(pat, str, 0, need_backref);
rb_pat_search    4798 string.c       	beg = rb_pat_search(pat, str, offset, need_backref);
rb_pat_search    4803 string.c           rb_pat_search(pat, str, last, 1);
rb_pat_search    8162 string.c           if (rb_pat_search(pat, str, *start, 1) >= 0) {
rb_pat_search    8242 string.c       	if (last >= 0) rb_pat_search(pat, str, last, 1);
rb_pat_search    8252 string.c           if (last >= 0) rb_pat_search(pat, str, last, 1);