Uwe Stöhr wrote: > - The attached patch supports \selectlanguage etc. in tex2lyx.
I think there's a problem: the language switch is not static, it depends on what the user defined as lyxrc.language_command_begin and lyxrc.language_command_end. So you cannot assume (and hardcode) \selectlanguage as the language switch, you have to check if this is actually defined in lyxrc (if not, ERT should be output). Apart from \selectlanguage, we should then probably also support (at least) babel's "otherlanguage" environment. Jürgen