[RFC] Strive to prefer sbumpc() to snextc()?!?

[Paolo Carlini]

Pétur Runólfsson wrote:

>The best solution may be to use neither sbumpc() nor snextc(), but
>instead access the buffer directly, similar to what is already done
>in __copy_streambufs:
>
>      while (!_Traits::eq_int_type(__c, _Traits::eof()))
>        {
>          const size_t __n = __sbin->egptr() - __sbin->gptr();
>          if (__n > 1)
>            {
>              const char_type* p = traits_type::find(__sbin->gptr(),
>                __n, __delim);
>              if (p)
>                 __n = p - __sbin->gptr();
>              __str.append(__sbin->gptr(), __n);
>              __sbin->gbump(__n);
>
>In most cases, this should cause only a single call to append.
>  
>
However, I agree that this cute solution has the potential to be the 
fastest one
by far ;) ... Perhaps I can implement it in a reasonable amount of time...

Thanks,
Paolo.