On Tue, Feb 10, 2026 at 11:50:48PM +0100, Vincent Lefevre wrote: > > Yes, as Patrice explains the current behaviour is a deliberate choice. > > (It's wrong to term it a "regression".) > > The fact is that until now, lang="en" was generated by default, > and this has changed, introducing a silent bug in manuals where > @documentlanguage isn't used (in particular because it was not > needed for manuals in English). It would be much better to have > @documentlanguage required[*] so that developers can notice the > issue with new texinfo versions and fix it. > > [*] possibly allowing an empty value for developers who do not > want to specify a language (though I currently do not see a > reason for that).
It would not be better in my opinion as it would break users' documents for a very minor reason. There's no harm as far as I am aware in not specifying the language for documents in English. I hardly see how it can be termed a "bug" in those documents.
