Stefan Monnier <monnier@iro.umontreal.ca> writes:

> You lost the `(with-current-buffer ,temp-buffer` around `write-region`
> so your new code will break if `body` doesn't preserve current-buffer.

Ugh, I thought the caller couldn't kill the buffer because it's later
written, but I didn't think of excursions.  I've now attached an updated
patch.

Thanks,

-- 
Basil