Bug 1374843

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Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.

localectl causes /etc/locale.conf to be updated with the new settings, and systemd will use this to set the environment of lightdm (or other login manager). But after you log in, those settings can be influenced by various other things, including at least the display manager and /etc/profile.d/lang.sh, which reads ~/.i18n.

Since the settings for root match what you configured with localectl, it seems some other component resets the locale. Please do the following:

- run "pstree -aps $$" to see a list of ancestors of your shell
- look at each process's environment with "cat /proc/PID/environ | tr '\0' '\n'" where PID is each process number. You'll need so prefix this with 'sudo' for system processes.
- you should see LANG=en_US.utf8 switch to LANG=C.utf8 at some point... This should be the place where the issue is.

Sorry, this fell under my rather. This is Fedora 27 now. I'm not sure pstree is very helpful. When terminal is started, it falls to parent "1".

> $ pstree -aps $$
> systemd,1 --switched-root --system --deserialize 24
>   └─xfce4-terminal,2543
>       └─bash,6687
>           └─pstree,31427 -aps 6687
> 
> $ cat /proc/2543/environ | tr '\0' '\n' | grep LANG
> LANG=C.utf8
> $ sudo cat /proc/1/environ | tr '\0' '\n' | grep LANG
> LANG=en_US.utf8

Still `bash -l` doens't help:

> $ bash -l
> $ echo $LANG
> C.utf8

`sudo su -` still helps though

> $ sudo su - user
> [sudo] password for user: 
> $ echo $LANG
> en_US.utf8

I don't think I have any customization wrt LANG, my first attempt at setting it was with `localectl`:

> $ grep LANG ~/.*
> grep: /home/user/.: Is a directory
> grep: /home/user/..: Is a directory
> ...

I don't know how is systemd supposed to set LANG but it doesn't work for all sessions.

Now with Fedora 30 I do see LANG properly set under XFCE. I don't know what changed.

> 🐚 localectl status
>    System Locale: LANG=en_US.utf8
>                   LC_CTYPE=C.utf8
>                   LC_NUMERIC=C.utf8
>                   LC_TIME=C.utf8
>                   LC_MONETARY=C.utf8
>                   LC_PAPER=bg_BG.utf8
>                   LC_NAME=C.utf8
>                   LC_ADDRESS=C.utf8
>                   LC_TELEPHONE=C.utf8
>                   LC_MEASUREMENT=C.utf8
>                   LC_IDENTIFICATION=C.utf8


Then

> 🐚 set |grep LANG
> LANG=en_US.utf8

OK, let's close then.