I tried using two-modes.el with html-mode and c-mode.
It works so-so, mostly because semantic shows a line at the top of the
buffer with function context that confuses two-mode. I dont know what
this feature is called, so I dont know how to disable it. (Really, I
like the feature, and its two-mode that should be fixed, but I would
like to have a quick fix for now)
This raises another question however.
Is it possible to define "meta modes" with semantic that is, combine
wisent files together to form new modes.