build_range_exp
build_range_exp (const reg_syntax_t syntax,
build_range_exp (bitset_t sbcset, re_charset_t *mbcset, int *range_alloc,
*err = build_range_exp (sbcset, mbcset, &range_alloc,
*err = build_range_exp (syntax, sbcset,
*err = build_range_exp (syntax, sbcset, &start_elem, &end_elem);