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https://github.com/fish-shell/fish-shell
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dbc6bffe3c
This isn't really a "locale" variable as such. It has no effect on encoding and stuff, it's just the output language. What we really want here is get something better than the awkward "C" or "POSIX" for LC_CTYPE specifically - everything else doesn't really matter.
78 lines
3.8 KiB
Fish
78 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
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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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