Re: new module 'duplocale'

[Ludovic Courtès]

Hi Bruno,

Bruno Haible <address@hidden> writes:

> glibc unfortunately has a big bug in its duplocale function:
>   <http://sourceware.org/bugzilla/show_bug.cgi?id=10969>
> This module provides a workaround for it. Tested on glibc and MacOS X systems,
> which are AFAIK the only systems so far with a duplocale function.

Excellent, thanks!  Guile now uses the ‘locale’ and ‘duplocale’ modules.

>       const char *base_name = nl_langinfo (_NL_LOCALE_NAME (LC_CTYPE));

This is not thread-safe but I guess there’s no other choice.

On a related note, nl_langinfo_l(3) is broken in current glibc:

  http://sourceware.org/bugzilla/show_bug.cgi?id=11009

Presumably an ‘nl_langinfo_l’ module could build on the ‘duplocale’
module like this:

--8<---------------cut here---------------start------------->8---
char *
rpl_nl_langinfo_l (nl_item item, locale_t locale)
{
  char *result;
  locale_t locale_copy;

  locale_copy = duplocale (locale);
  if (locale_copy != (locale_t) 0)
    {
      result = nl_langinfo_l (item, locale_copy);
      freelocale (locale);
    }
  else
    result = NULL;

  return result;
}
--8<---------------cut here---------------end--------------->8---

What do you think?

Thanks,
Ludo’.