Change Details

MediaWiki currently generates for the HTML attribute `lang` some language codes which are not conform to [[ https://tools.ietf.org/html/bcp47 | BCP 47 ]]: * `de-formal`: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.mediawiki.org%2Fwiki%2FSpecial%3ASpecialPages%3Fuselang%3Dde-formal * `en-rtl`: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.mediawiki.org%2Fwiki%2FSpecial%3ASpecialPages%3Fuselang%3Den-rtl * `nl-informal`: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.mediawiki.org%2Fwiki%2FSpecial%3ASpecialPages%3Fuselang%3Dnl-informal I suggest the following replacements: * `de-formal` -> `de` or `de-x-formal` * `en-rtl` -> `en` * `nl-informal` -> `nl` or `nl-x-informal` `simple` is already converted to `en`. So here is nothing to do: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.mediawiki.org%2Fwiki%2FSpecial%3ASpecialPages%3Fuselang%3Dsimple