Declared in <mp-units/utility/format.h>
template<
std::forward_iterator It,
typename Specs>
[[nodiscard]]
constexpr
It
parse_fill_align_width(
std::basic_format_parse_context<std::iter_value_t<It>>& ctx,
It begin,
It end,
Specs& specs,
fmt_align default_align = fmt_align::none);
The return value should not be discarded.