> So I suggest the patch below.  Comments?  Objections?

Here's a better implementation, in C.
One advantage is that it runs the `after/before-change-functions` only once.
Also, I made it take an optional `inherit` argument so it can do the
same as `insert-and-inherit` (as is used in `minibuffer--replace`).
This version does not move point to the end of the new text.


        Stefan