Would it be possible to at least at the crate keyword to the other modes?

@huonw I'm not sure what you mean, to the other modes.

Editor modes: emacs, kate etc.

Ah. I'm not familiar with emacs/kate/etc modefiles. I don't know how to make the necessary changes.

They all have a list of keywords somewhere, presumably, and this can just be extended. (Grep for e.g. extern in them,)

Ok sure, I could add it as a basic keyword, but I don't know how to do the fancy vim stuff I put in here (where the keyword is marked as an error unless it's after extern).

That's fine.

Pushed. crate is now in the emacs and kate modefiles as well.

Could you do gedit too?

(r=me if so, and an experienced vim-er like @chrismorgan agrees with the vim changes.)

Pushed. @chris-morgan?

Vim stuff: LGTM.

Thanks @chris-morgan and @huonw.