David Kastrup <dak@gnu.org> wrote:

> Sascha Wilde <wilde@sha-bang.de> writes:
>
>> David Kastrup <dak@gnu.org> wrote:
>>> Sascha Wilde <wilde@sha-bang.de> 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.
>> [...]
[...]
>> 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.

I attached a rough patch, which solves the problem at least on
POSIX-like systems: