rb_reg_initialize 1042 re.c               rb_reg_initialize(re, s, len, options);
rb_reg_initialize 1182 re.c           	rb_reg_initialize(self, RREGEXP(src)->str, RREGEXP(src)->len, flags);
rb_reg_initialize 1186 re.c           	rb_reg_initialize(self, RSTRING(src)->ptr, RSTRING(src)->len, flags);
rb_reg_initialize 1342 re.c               rb_reg_initialize(copy, RREGEXP(re)->str, RREGEXP(re)->len,