Re: Per-buffer and per-window frame-parameters.

[Richard Stallman]

    As an example, the functions frame-parameters and modify-frame-parameters
    should be applicable to buffers and windows as well as frames.

Hold your horses.  Using these functions on buffers is not a clean
API; that would definitely be a mistake.

To have some way to specify all frame parameters per-buffer makes
sense conceptually; we could invent a clean API for it.  But it is
likely to be a lot of work to get it to work right, and since it is
not very useful, that would mostly be wasted effort.

In many cases it is not even sensible.  What does it mean for the
frame size to be per-buffer?  Should the frame change size when you
switch buffers?  With enough effort, we could make that feature
"work", but it would be wrong to *use* it, so why bother?

Our resources are limited, so we should spend them on things that
really make a difference in the usability of Emacs.  This is not one.
Please help me by focusing on the features that will make Emacs more
powerful *for users*, rather than on generalizations that appeal only
to a programmer.