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79 lines
3.8 KiB
Fish
79 lines
3.8 KiB
Fish
# Try to set the locale from the system configuration if we did not inherit any. One case where this
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# can happen is a linux with systemd where the user logs in via getty (e.g., on the system console).
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# See https://github.com/fish-shell/fish-shell/issues/3092. This isn't actually our job, so there's
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# a bunch of edge-cases we are unlikely to handle properly. If we get a value for _any_ language
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# variable, we assume we've inherited something sensible so we skip this to allow the user to set it
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# at runtime without mucking with config files.
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#
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# NOTE: This breaks the expectation that an empty LANG will be the same as LANG=POSIX, but an empty
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# LANG seems more likely to be caused by a missing or misconfigured locale configuration.
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function __fish_set_locale
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set -l LOCALE_VARS
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set -a LOCALE_VARS LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE
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set -a LOCALE_VARS LC_MONETARY LC_MESSAGES LC_PAPER LC_NAME LC_ADDRESS
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set -a LOCALE_VARS LC_TELEPHONE LC_MEASUREMENT LC_IDENTIFICATION
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# We check LC_ALL to figure out if we have a locale but we don't set it later. That is because
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# locale.conf doesn't allow it so we should not set it.
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for locale_var in $LOCALE_VARS LC_ALL
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if set -q $locale_var
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return 0
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end
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end
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# Try to extract the locale from the kernel boot commandline. The splitting here is a bit weird,
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# but we operate under the assumption that the locale can't include whitespace. Other whitespace
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# shouldn't concern us, but a quoted "locale.LANG=SOMETHING" as a value to something else might.
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# Here the last definition of a variable takes precedence.
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if test -r /proc/cmdline
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for var in (string match -ra 'locale.[^=]+=\S+' < /proc/cmdline)
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set -l kv (string replace 'locale.' '' -- $var | string split '=')
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# Only set locale variables, not other stuff contained in these files - this also
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# automatically ignores comments.
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if contains -- $kv[1] $LOCALE_VARS
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and set -q kv[2]
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set -gx $kv[1] (string trim -c '\'"' -- $kv[2])
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end
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end
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end
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# Now read the config files we know are used by various OS distros.
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#
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# /etc/sysconfig/i18n is for old Red Hat derivatives (and possibly of no use anymore).
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#
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# /etc/env.d/02locale is from OpenRC.
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#
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# The rest are systemd inventions but also used elsewhere (e.g. Void Linux). systemd's
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# documentation is a bit unclear on this. We merge all the config files (and the commandline),
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# which seems to be what systemd itself does. (I.e. the value for a variable will be taken from
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# the highest-precedence source) We read the systemd files first since they are a newer
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# invention and therefore the rest are likely to be accumulated cruft.
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#
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# NOTE: Slackware puts the locale in /etc/profile.d/lang.sh, which we can't use because it's a
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# full POSIX-shell script.
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set -l user_cfg_dir (set -q XDG_CONFIG_HOME; and echo $XDG_CONFIG_HOME; or echo ~/.config)
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for f in $user_cfg_dir/locale.conf /etc/locale.conf /etc/env.d/02locale /etc/sysconfig/i18n /etc/default/locale
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if test -r $f
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while read -l kv
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set kv (string split '=' -- $kv)
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if contains -- $kv[1] $LOCALE_VARS
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and set -q kv[2]
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# Do not set already set variables again - this makes the merging happen.
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if not set -q $kv[1]
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set -gx $kv[1] (string trim -c '\'"' -- $kv[2])
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end
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end
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end <$f
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end
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end
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# If we really cannot get anything, at least set character encoding to UTF-8.
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for locale_var in $LOCALE_VARS LC_ALL
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if set -q $locale_var
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return 0
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end
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end
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set -gx LC_CTYPE en_US.UTF-8
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end
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