Hello, Currently, @documentlanguage unknown main language or region are used in texi2any, with a warning. Should an unknown language or region be ignored instead?
On the one hand, maybe the user is doing it on purpose, for example she could have redefined the documentlanguage formatting with the HTML customization API. On the other hand it is likely that language support will be poor. Maybe it does not matter, there is a warning, therefore there should not be any user expectation. I do not have a clear idea on what should be best, Any recommendation? -- Pat
