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Re: Extend gdb to filter registers

From: John Yates
Subject: Re: Extend gdb to filter registers
Date: Sat, 25 Jan 2020 09:56:11 -0500

There seem to be three concept in play here:
  - dedicated windows
  - really dedicated windows
  - unsplittable frames

gdb-mi creates dedicated windows which
under some circumstances (see my most
recent reply to Eli) still get split.

Your quote from Stefan seems to be about
really dedicated windows.

My comment that you quoted was about
the possibility of display-buffer splitting a
window on an unsplittable frame.  I admit
to having no actual experience with such
a configuration.  I was merely referencing
my understanding per info's Window Frame
Parameters > Buffer Parameters node:

     If non-‘nil’, this frame’s window is never
     split automatically.

To reiterate my previous suggestion, I think
that creating stable window configurations
would be well served by adding a new
unsplittable window property.


On Sat, Jan 25, 2020 at 3:43 AM martin rudalics <address@hidden> wrote:
>  > That said I think that the current windowing model
>  > has a surprising semantic for dedicated, namely that
>  > a dedicated window is allowed to be split.   Were
>  > there a way to make a window unsplittable (apart
>  > from creating it on an unsplittable frame) then
>  > gdb-setup-windows could use it.  I believe that
>  > net effect would be all source displayed within the
>  > source area (though possibly in multiple windows).
> I once thought so as well but Stefan convinced me of the contrary, see
> this comment in window.el.
>                         ;; Actually, even if the window is really dedicated,
>                         ;; the frame is still usable by splitting it.
>                         ;; At least Emacs-22 allowed it, and it is desirable
>                         ;; when displaying same-frame windows.
> Think of 'split-window' as of creating a new window somewhere near the
> one of its argument.  And note that you can always split a frame's root
> window instead or make your dedicated window fixed size.
> martin

John Yates
505 Tremont St, #803
Boston, MA 02116

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