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This is a incredibly simple module for Raku designed to do one thing and one thing only: obtain the current user’s preferred language(s). There is no universal way to do this, so this module aims to be the one-stop shop to get that information.
To use, simply ask for the preferred language (if you just want one) or preferred languages (more common).
use Intl::UserLanguage; user-language; # ↪︎ [ast-US] (on my system) user-languages; # ↪︎ [ast-US], [es-US], [en-US], [pt-PT] (on my system) # (sidenote: no idea why Apple adds -US onto ast…) # (sidenote: Microsoft makes it ast-Latn… weird.)
In truth, the preferred language is just a wrapper for calling
.head on the
list. I'd recommend against using
user-language, as most times when you
need the languages (HTTP request headers, localization frameworks) there needs
to be a negotiation to find a best match.
In any case, both functions allow you to supply a default code which may be a string in BCP47 format or a LanguageTag. This is useful in case for some reason the user’s language(s) cannot be determined, for example, if the user is running an operating system that has not had its settings cataloged in this module. If you do not provide a default, and no language can be found, the default default language is en (English).
As a final option, particularly if you want to test your code with other languages, you can override the user’s system languages:
use Intl::UserLanguage :override; # imports override functions user-languages; # ↪︎ [ast-US], [es-US], [en-US], [pt-PT] (on my system) override-user-languages('jp','zh'); user-languages; # ↪︎ [jp], [zh]
The override can be cleared at any time with
Note that the override is global, and there is no current way to lexically
Support is current available for the following OSes:
$LANGUAGEis set, then an ordered list is provided. Otherwise, it falls back to the more universal
$LANG, which only provides a single language.
Languagesis set in
HKCU\Control Panel\International\User Profile, uses the ordered list found there. Otherwise, it falls back to the registry value
LocaleNamefound in at
Support is not available for *nix machines right now, but only because I am not
sure what the
$*DISTRO value is for those systems. I imagine detection will be
similar if not identical to Linux. Please contact me with your
and how to detect your system language(s) and I'll gladly add it.
If your program only needs the language code to pass it through to something that only employs strings (e.g. to directly create a , it may
be useful to
use the module in
Instead of receiving a
LanguageTag object, you will get a
Str that can be passed into other modules.
Intl::*that call this frequently as a fall back.
This module is licensed under the Artistic License 2.0 which is included with the source. Camelia (the butterfly) is a trademark belonging to Larry Walls and used in accordance with his terms.