This Lua module is used on approximately 17,000 pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.

This module depends on the following other modules: Module:Engvar/detect (sandbox) Module:Arguments (sandbox) Module:Yesno (sandbox)

This module implements {{engvar}}. It allows templates to show national varieties of English, when |engvar= is passed by each article.

For example, one template can display "football" for |engvar=en-UK articles, and "soccer" for |engvar=en-US articles.

{{#invoke:engvar|variants
| defaultWord =
| defaultLang =
| engvar = <!-- Pass-through the editor's choice, set to 'auto' to automatically detect -->
| en-XX = <!-- add country code for XX, and the nation language word -->
| en-YY = <!-- add more varieties as might be needed -->
| engvarCat =  <!-- '=no' will suppress message category in article page -->
| fallback = <!-- set to 'true' to allow commonwealth languages to fallback to 'en-GB'. False by default unless engvar='auto'. -->
}}

{{example
| engvar =
| engvarCat =
}}

Articles with an invalid |engvar= will be placed in the hidden maintenance category Category:Articles using an unknown Template:Engvar option. Articles listed may need editing.

An article's requested |engvar= may be unspecified in the template. For example, if an article uses {{example|engvar=South African English}} but the template has no |en-ZA=, then the template will return |defaultWord=default color name. The category will not be used.

When this categorization is not desired for a whole template, set |engvarCat=no in the template

Otherwise pass-through this setting from the article: |engvarCat={{{engvarCat|yes}}}. This allows the editor to switch categorization off per article.

Articles are sorted by |engvarCatSort= or {{pagename}} by default. Note that other templates will fill this category. Set this parameter like |engvarCatSort=Personal prefs in a template to group its listings under "P".

In the template, use the exact ISO-code as the parameter name like |en-GB=vapour. Write |en-US=soccer not |American English=soccer. Needed varieties have articles using the template and words differing from the default.

There is backwards compatibility for leeway in articles. |engvar=en-US, |engvar=United States, |engvar=US can all show the |en-US=football variety.

• HELP:ENGVAR
• Category:Articles using an unknown Template:Engvar option
• ISO 3166-1 alpha-2 -- The 2-letter country code
• {{#invoke:Engvar|explain|...}} - debugging