David Planella wrote:
> While the patch fixes the issue where Xsession was writing a LANGUAGE
> variable with incorrect syntax, now we've got a situation where:
> 
> • GDM can only write LANG (and the LC_xx categories)
> • language-selector can write LANGUAGE
> • That effectively means that the language one selects in GDM is useless, 
> since LANGUAGE has precedence
> • In some applications LANG (or LC_xxx) is used, though.
> 
> As a test, in my Catalan session I logged out, chose German as the
> language in GDM, logged back in and noticed:
> 
> • Most applications are in Catalan
> • The calendar is half Catalan, half German
  -> bug in the calendar code
> •  Firefox is in German
  -> bug in firefox


> $ locale
> LANG=de_DE.utf8
> language=ca...@valencia:ca_ES:ca:en_GB:en
> LC_CTYPE="de_DE.utf8"
> LC_NUMERIC="de_DE.utf8"
> LC_TIME="de_DE.utf8"
> LC_COLLATE="de_DE.utf8"
> LC_MONETARY="de_DE.utf8"
> LC_MESSAGES="de_DE.utf8"
> LC_PAPER="de_DE.utf8"
> LC_NAME="de_DE.utf8"
> LC_ADDRESS="de_DE.utf8"
> LC_TELEPHONE="de_DE.utf8"
> LC_MEASUREMENT="de_DE.utf8"
> LC_IDENTIFICATION="de_DE.utf8"
> LC_ALL=
> 
> This can be potentially very confusing to users switching locales.

I agree. Language-selector has code to generate the LANGUAGE variable 
out of any given LANG locale code. It uses the file 
/usr/share/language-selector/data/languagelist to find fallbacks for 
LANGUAGE and if the specific locale is not mentioned there, just strips 
the encoding and country code from the LANG value.

I think this code and the fallback list should be placed into a separate 
library, so that it can be used by gdm and ubiquity/debian-installer to 
set the LANGUAGE variable correctly.

I can split out the code from language-selector and create a 
command-line interface to query the mapping. If you guys agree with 
that, can we get this done until beta2?

-- 
/etc/gdm/Xsession breaks LANGUAGE
https://bugs.launchpad.net/bugs/407300
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