Ensure character encoding can be detected by tlog on Fedora and RHEL about meta HOT 10 OPEN

See also Scribery/tlog#78.

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A (rather burdensome) workaround can be for user to set up pam_env themselves.

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The pam_env workaround can be putting this into /etc/pam.d/system-auth:

session     required      pam_env.so readenv=1 envfile=/etc/locale.conf

Putting it before this line seems to work:

session     required      pam_limits.so

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I started a discussion of locale environment setup in Fedora on [email protected]:
https://lists.fedoraproject.org/archives/list/[email protected]/thread/37B7RLKU5JYKUK46ANTUADNRGELW6U7O/

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There was no response to the message on Fedora devel maillist.

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Getting in touch with PAM maintainers next.

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Tomas Mraz, the PAM and authconfig maintainer in Fedora seems to be fine with the PAM-based fix as long as the format of /etc/locale.conf is within what pam_env.so expects. I raised systemd-devel to check, and run the whole idea past them.

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Another approach could be letting the systemd and login pass the locale environment variables read and set by systemd-logind.

First these lines need to be removed from the /lib/systemd/system/[email protected] file:

# Unset locale for the console getty since the console has problems
# displaying some internationalized messages.
Environment=LANG= LANGUAGE= LC_CTYPE= LC_NUMERIC= LC_TIME= LC_COLLATE= LC_MONETARY= LC_MESSAGES= LC_PAPER= LC_NAME= LC_ADDRESS= LC_TELEPHONE= LC_MEASUREMENT= LC_IDENTIFICATION=

And the following line in the same file:

ExecStart=-/sbin/agetty --noclear %I $TERM

needs to be changed to this:

ExecStart=-/sbin/agetty -o "-p -- \u" --noclear %I $TERM

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A fix for the above was submitted to systemd: systemd/systemd#6023

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Discussion with systemd upstream is still ongoing, but we have the fallback path of the PAM configuration.

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