bug#7822: 24.0.50; `fit-window-to-buffer': take display artefacts into account

[Lennart Borgman <lennart.borgman@gmail.com>]

On Wed, Jan 12, 2011 at 11:40 AM, Lennart Borgman
<lennart.borgman@gmail.com> wrote:
> On Wed, Jan 12, 2011 at 4:16 AM, Drew Adams <drew.adams@oracle.com> wrote:
>>> Try first to adjust window below and if that is not enough window
>>> above.
>>
>> I looked only at the doc string.  Whatever we do for `fit-window-to-buffer', it
>> should _not_ take any other windows into account or have any effect on any other
>> windows.  This is only about fitting a window to its buffer as displayed.
>> Whatever effects that might have on other windows are derivative, and not to be
>> taken into account in this function.
>>
>> It sounds like you are doing something different from what this bug is about.
>
> Not really, but your answer makes me realize that my solution above is
> not enough.
>
> And I actually have a better solution in winsize.el, but it is quite a
> bit more elaborate and probably not what we want.

To be more clear: I was taking into account to few windows. All
windows below and above must be taken into account.

And I somehow forgot to implement this in resize-windows (which is in
winsize.el). It is a little bit complicated so I can't do it that
quickly.

> Instead I believe we want a variant of enlarge-window that is not
> allowed to delete-windows. Building on that we can make a more simple
> solution.

Perhaps that is wrong. That would only mean pushing the logic above to
the C level.