Languages have complex ways of marking (coding) the names of languages that are used/spoken/known/written etc. English is pretty simple but in Polish f.ex. I speak POLISH (or any language whose name is an adjective plus Latin, whose name in Polish is a noun) has one construction, I speak SANSKRIT (or any language whose name is a noun other than Latin) has another, I speak MANY LANGUAGES has a third, I know Polish, Sanskrit, many languages, etc. has a fourth--and there much more. Then different languages of course have different ways of doing it. I cannot find but maybe just missed any discussion of this whole topic in typological or theoretical ling (e.g. The Oxford Handbook of Case or Blake's Case). Is there any?

Linguistic Field(s): Syntax
Typology