[PATCH] Document the internal _ and N_ macros

[Florian Weimer]

* Carlos O'Donell:

> On 5/6/20 5:23 AM, Florian Weimer wrote:
>> -----
>> Tested by building glibc on x86_64-linux-gnu.
>> 
>
> Please post v2 for review.

>> +   deprecated because using N_ for strings which are not translated
>> +   after all creates unnecessary work for the translation team: glibc
>> +   does not currently use those translations, and that may never
>> +   change.  */
>
> Suggest:
>
> In the future this historic usage of N_ may become deprecated.  Strings 
> which are not translated create unnecessary work for the translation
> team.  We continue to use N_ because it helps mark translatable strings.

Thanks, v2 posted:

   <https://sourceware.org/pipermail/libc-alpha/2020-May/113667.html>