Re: set-locale-environement: strange default detection

[Jan Djärv]

David Kastrup skrev:
> Sascha Wilde <address@hidden> writes:
> 
>> David Kastrup <address@hidden> wrote:
>>> Sascha Wilde <address@hidden> writes:
>>>> a friend of mine (unfortunately a vim user, but a nice guy otherwise),
>>>> tried emacs on Gnu/Linux and was surprised that `C-h t' presented him
>>>> the German version of the tutorial.
>> [...]
>>> The problem is that we don't have finegrained support.  For the
>>> purpose of talking to the user, LC_MESSAGES is relevant.  But Emacs so
>>> rarely has the opportunity to talk anything but English to the user
>>> that we simply have no reasonable interface into this for now.
>> So maybe we should check for LANG, LC_ALL and maybe LC_MESSAGES in
>> tutorial.el itself.
> 
> Possibly.  I am not sure whether environment variables tell the whole
> story, and in a readable way (there are locale system calls, too), but
> they would probably cover 90% of the cases.
> 

The locale man page says the order should be LC_ALL, LC_MESSAGES, LANG:

       1.     If there is a non-null environment variable LC_ALL, the value of
              LC_ALL is used.

       2.     If an environment variable with the same name as one of the cat‐
              egories above exists and is non-null, its value is used for that
              category.

       3.     If there is a non-null environment variable LANG, the  value  of
              LANG is used.



        Jan D.