Method parse

include/fmt/base.h:2359–2364

 public:
  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
    if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
    auto end = parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx, TYPE);
    if FMT_CONSTEXPR20 (TYPE == type::char_type) check_char_specs(specs_);
    return end;
  }

  template <type U = TYPE,
            FMT_ENABLE_IF(U == type::string_type || U == type::cstring_type ||