[grey-area]

Funny you mention play.golang.org as that's exactly what I'd love to be running locally to edit go and ruby, and run it as I edit. Guess I'm old fashioned but prefer to edit locally.

As you say, in theory at least not too hard to wrap in WebKit, but I have a feeling it might be more work than it first appears, and am too busy right now to attempt it and was hoping someone else had. Maybe one day. Thanks for elaborating.

[drivebyacct2]

One of my next projects is to use diff-path-merge to build cloud9 for Go. I want to be able to have collaborative editting combined with Go's fast compiles to have a multi-user cooperative coding environment.

But it will still use a "shim" of sorts. It will basically sync via d-p-m and websockets to a server that will do the saving/building/running and then return the output.