%S %C vfprintf contribution

[Nicholas Wourms]

Artem B. Bityuckiy wrote:

> Hello.
> 
> Here is the patch that makes vfprintf (and hence, all other 
> vfprintf-based Xprintf functions) understand ISO C 90 %S (same as %ls) 
> and %C (same as %lc) format placeholders. Please, review it and give us 
> know if something is wrong.
> 
> This is tested a little bit- it works and it seems should work with any 
> locale if wcrtomb and wcsrtomb functions work.
> 

I believe the preferred patch type is unidiff or `diff -up`.

Cheers,
Nicholas