https://fedoraproject.org/wiki/Changes/Reset-locale-if-not-available == Summary == When logging in over ssh or another mechanism, locale settings are forwarded. If the destination does not support that locale, C.UTF-8 will be used instead. == Owner == * Name: [[User:Zbyszek | Zbigniew Jędrzejewski-Szmek]] * Email: zbyszek@xxxxxxxxx == Detailed Description == This is a continuation of [[Changes/Remove glibc-langpacks-all from buildroot]]. With that change implemented, it is much more likely for a system to only support C.UTF-8 or some other small set of locales. When logging in into such an image from a normal system that uses a "full" locale like en_US.UTF-8 or the equivalent for another language, those locale settings are forwarded, resulting in a session with invalid locale settings and errors from various tools. The same problem could occur previously, for example when logging in from a desktop with LANG=fr_FR.UTF-8 to a container with only en_EN.UTF-8 installed. To avoid this, the locale setting will be reset to C.UTF-8 if the current setting is "invalid" (not found). We already have a mechanism to reset locale information if it is unusable. `/etc/profile.d/lang.sh` will unset Japanese/Korean/Chinese/... locales only the tty, because the kernel cannot display such fonts properly, so we switch to `en_US.UTF-8` to get ''something'' displayed. The same mechanism will be used for this. == Benefit to Fedora == Avoid stupid warnings like <pre> perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LC_CTYPE = "fr_FR.UTF-8", LANG = "en_US.UTF-8" ... are supported and installed on your system. perl: warning: Falling back to a fallback locale ("en_US.UTF-8"). </pre> == Scope == * Proposal owners: ** Provide a patch to `/etc/profile.d/lang.{sh,csh}` to check if the inherited locale is present, and if not, reset to C.UTF-8. * Other developers: n/a * Release engineering: https://pagure.io/releng/issue/8036 ** List of deliverables: N/A * Policies and guidelines: no changes needed * Trademark approval: N/A (not needed for this Change) == Upgrade/compatibility impact == I ''think'' this should be beneficial in all cases. I doubt that anyone runs with broken locale settings on purpose. == How To Test == Login to a different machine with a locale not installed on that machine. Verify that the locale is set to C.UTF-8. If the locale is installed on the target machine, it should not be reset. == User Experience == Slightly easier ssh sessions. See also [https://bugzilla.redhat.com/show_bug.cgi?id=1432426 1432426]. == Dependencies == None. == Contingency Plan == Revert the change to `/etc/profile.d/lang.*`. * Contingency mechanism: revert the patch, rebuild `setup` package * Contingency deadline: any time before relase * Blocks release? no * Blocks product? no == Documentation == None needed. == Release Notes == Locale settings will be reset to C.UTF-8 when logging into a machine which does not have the locale that is used on the source machine. -- Ben Cotton Fedora Program Manager TZ=America/Indiana/Indianapolis _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
