Re: [Patch] match_results::format and regex_replace

[Paolo Carlini <paolo dot carlini at oracle dot com>]

Hi,

On 09/20/2013 01:18 AM, Stephen M. Webb wrote:
> 1) regex_traits<>::transform_primary [28.7.7]. I don't know how to
> implement it correctly. Can anyone give some advice?
> I believe this requires some platform-specific support, since the std::locale mechanism does not support primaries
> directly, only indirectly through collation and that's not sufficient.  I believe there are XPG4 calls for this
> supported by glibc, but I'm a little rusty (it's been over a decade since I knew this stuff by heart) so I'll look in to it.
If you come to the conclusion that in order to implement this specific 
bit of <regex> we need support from glibc which is currently missing (as 
far as I can see, it's certainly possible) we should not hesitate to ask 
the glibc people, would not be the first time features are added for the 
benefit of the C++ library. Can you investigate a little further?

Thanks,
Paolo.