[RFC] moneypunct<wchar_t>: mbsrtowcs or just btowc?

[Paolo Carlini]

> If you want the library to work with locales created by the
> localedef utility you can't assume that. It's trivial to create
> locales with any arbitrary currency symbol, including one that
> contains multibyte character sequences. IMO, the small performance
> gain you get by making these kinds of assumptions is not worth the
> loss of robustness.

Ok, I agree, thanks (and anyway we cache that info ;)

What about the interpretation of the fourth char of int_currency_symbol
for the C++ purposes??? Should be considered part of the C++ symbol or
not? What RW does?

Paolo.