Language.fromString

Convert a language tag to a [pango.language.Language].

The language tag must be in a RFC-3066 format. [pango.language.Language] pointers can be efficiently copied (copy the pointer) and compared with other language tags (compare the pointer.)

This function first canonicalizes the string by converting it to lowercase, mapping '_' to '-', and stripping all characters other than letters and '-'.

Use [pango.language.Language.getDefault] if you want to get the [pango.language.Language] for the current locale of the process.