Add basic_format_string::get()

[huangqinjin]

No description provided.

[vitaut]

Please explain why you want to add this member function.

[huangqinjin]

To conform with standard.

https://en.cppreference.com/w/cpp/utility/format/basic_format_string

[vitaut]

Thanks!

[phprus]

@vitaut
std::basic_format_string does not contain operator basic_string_view<Char>().
Maybe remove it and replace it with get() calls?

[vitaut]

{fmt} provides a lot of functionality not available in std::format, this is just one of them. I don't think we need to remove anything.