bug#30016: Improve visibility of Process List

[Juri Linkov]

>> It occurred to me that better would be to make tabulated-list columns
>> resizable.  So if the default column size truncates an important part,
>> the user could drag the column separator to make it wider, or use
>> a new key to resize the column, like ‘C-x {’ and ‘C-x }’ are used
>> to resize the window.
>
> This could be a nice feature, but it cannot be the solution for the
> problem at hand, because there are session without mice, where
> dragging anything is impossible.

But please notice the part about a key sequence like ‘C-x {’ and ‘C-x }’
to resize columns like resizing windows.

>> There is one problem: when ‘yes-or-no-p’ is replaced with ‘y-or-n-p’:
>>
>>   (fset 'yes-or-no-p 'y-or-n-p)
>>
>> in ~/.emacs it's impossible to switch to the *Process List* buffer
>> to do this.
>
> What do you mean by "impossible"?  When I try switching to that
> buffer, I'm not asked any questions at all, so how does yes-or-no-p
> come into play here?

I meant when *Process List* is displayed on quitting with ‘C-x C-c’
where the minibuffer is active with the prompt “Active processes exist;
kill them and exit anyway?”  It allows switching buffers when an
expected answer is “yes/no”, but doesn't when “y/n”.