On Thu, 2021-09-09 at 12:07 +0200, Florian Weimer wrote:
> There is a movement towards C.UTF-8 for small images (containers and
> VMs). C.UTF-8 has both size and performance improvements over the more
> traditional en_US.UTF-8 locale. (The performance improvement is
> currently in upstream glibc only, but we plan to bring it to rawhide and
> Fedora 35 shortly.)
>
> However, in a world where glibc-langpack-en (or glibc-all-langpacks) is
> not installed on target systems, logging in over SSH does not result in
> a viable locale if the client use en_US.UTF-8 (or any other locale
> except C or C.UTF-8). This causes a severe degradation in user
> experience. It's not only that UTF-8 output does not work, there are
> also frequent warning messages from various tools. Some may even refuse
> to run completely.
>
> I tried to bring up this topic on the OpenSSH list to get some
> cross-distribution consensus, but the discussion didn't actually go
> anywhere:
>
> Phasing out forwarding of locale settings
>
> <https://lists.mindrot.org/pipermail/openssh-unix-dev/2021-September/039582.html>
>
> I think Fedora should do this unilaterally, dropping the downstream
> additions that enable locale forwarding in both the default client and
> server configurations. If we do that, the OpenSSH server will use the
> locale as configured with localectl for new interactive and
> non-interactive sessions, which is C.UTF-8 in many cases. At least
> that's what my testing on Fedora 33 suggests.
>
> Comments?
Wouldn't it be less disruptive to add only to the C.UTF-8-only
environments:
Match *
SetEnv LC_xxx=C.UTF-8 .. <all the locale ones that we AcceptEnv>
....
In a sshd_config_d snippet or something... ?
- Yanko
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