bug#19576: write-file writes the wrong buffer

[martin rudalics]

> IOW, once we, by popular demand, decided to call
> window-size-change-functions when the mini-window is resized, we
> invalidated that specification.  All the other callers of this hook
> are not part of a redisplay cycle, but this one is, and cannot be
> anywhere else.

I still wonder what will happen when the function called by
‘window-size-change-functions’ triggers a message that resizes the
mini-window.

martin