bug#2350: 23.0.90; compilation-mode inserts output in the wrong location

[Stefan Monnier <monnier@iro.umontreal.ca>]

>     This is a fundamental problem in `narrow': its meaning is ambiguous.
>     Sometimes it is used to pretend that the buffer is really smaller than
>     it is, and other times it's used just to "focus" on a subpart.
>     The implementation (i.e. most of the C and Elisp code) tend to take the
>     first point of view, but sometimes users intend the other.

> While that is true, as a general statement, it is clear what we should
> do to fix this problem: Compilation mode should widen temporarily and
> insert at the end of the whole buffer.

But what isn't clear is whether it's always the right thing to do: it's
clear in this particular use of narrow, but there might be other uses of
narrow in conjunction with compilation buffers where it would be the
wrong thing to do.


        Stefan