Info Catalog
grub: icondir
grub: Special environment variables
grub: locale_dir
15.1.18 lang
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If this variable is set, it names the language code that the 'gettext'
command (⇒gettext) uses to translate strings. For example,
French would be named as 'fr', and Simplified Chinese as 'zh_CN'.
'grub-mkconfig' (⇒Simple configuration) will try to set a
reasonable default for this variable based on the system locale.