revise prompt after remote command
Does it get refreshed?
Revert "Ecasound .ecs file takes engine name, initially Nama.ecs"

This reverts commit a9322466a79d2f560f2d662bd81a36e151cb2fad.

The patch seems to cause insert effect to be unable
to delete the ops to be removed-then-replaced.
_insert_effect(): don't remove following effects till after
the corresponding Ecasound chain operators have been removed