Function parse_precision

include/fmt/base.h:1425–1438

template <typename Char>
FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end,
                                   format_specs& specs,
                                   arg_ref<Char>& precision_ref,
                                   parse_context<Char>& ctx) -> const Char* {
  ++begin;
  if (begin == end) {
    report_error("invalid precision");
    return begin;
  }
  auto result =
      parse_dynamic_spec(begin, end, specs.precision, precision_ref, ctx);
  specs.set_dynamic_precision(result.kind);
  return result.end;
}

enum class state { start, align, sign, hash, zero, width, precision, locale };