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intl: Treat C.UTF-8 locale like C locale (BZ# 16621)

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The wiki page https://sourceware.org/glibc/wiki/Proposals/C.UTF-8
says that "Setting LC_ALL=C.UTF-8 will ignore LANGUAGE just like it
does with LC_ALL=C." This patch implements it.

* intl/dcigettext.c (guess_category_value): Treat C.<encoding> locale
like the C locale.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Bruno Haible 2023-09-04 15:31:36 +02:00 committed by Florian Weimer
parent 8076906109
commit 2897b231a6
1 changed files with 6 additions and 2 deletions
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intl/dcigettext.c
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@ -1560,8 +1560,12 @@ guess_category_value (int category, const char *categoryname)
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)
to use gettext().
Ignore LANGUAGE and its system-dependent analogon also if the locale is
set to "C.UTF-8" or, more generally, to "C.<encoding>", because that's
the by-design behaviour for glibc, see
<https://sourceware.org/glibc/wiki/Proposals/C.UTF-8>. */
if (locale[0] == 'C' && (locale[1] == '\0' || locale[1] == '.'))
return locale;
/* The highest priority value is the value of the 'LANGUAGE' environment