Teach the in place editor to play nicely with forgery protection (wincent.dev, 2b5cbd0)

This requires me to commandeer the ":with" option for my own uses, but it seems a worthwhile trade-off (the alternative workaround is to disable forgery protection for in place editors, but that's opening too much of a hole).

Signed-off-by: Greg Hurrell <greg@hurrell.net>