[Bug locale/16621] C.UTF-8 locales should be regarded like C w.r.t. $LANGUAGE precedence

["fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16621

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |fweimer at redhat dot com

--- Comment #10 from Florian Weimer <fweimer at redhat dot com> ---
C is special-cased here:

  /* Ignore LANGUAGE and its system-dependent analogon if the locale is set
     to "C" because
     1. "C" locale usually uses the ASCII encoding, and most international
        messages use non-ASCII characters. These characters get displayed
        as question marks (if using glibc's iconv()) or as invalid 8-bit
        characters (because other iconv()s refuse to convert most non-ASCII
        characters to ASCII). In any case, the output is ugly.
     2. The precise output of some programs in the "C" locale is specified
        by POSIX and should not depend on environment variables like
        "LANGUAGE" or system-dependent information.  We allow such programs
        to use gettext().  */
  if (strcmp (locale, "C") == 0)
    return locale;

It looks like the locale name is not embedded in the locale data itself, so
identifying C.UTF-8 based on its name might not be so simple here.

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