GNU bug report logs - #10381
24.0.92; delete-other-windows-vertically depends on the window split order

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Sam Steingold <sds <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.92;
	delete-other-windows-vertically depends on the window split order
Date: Tue, 27 Dec 2011 16:32:01 -0500

In GNU Emacs 24.0.92.4 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2011-12-26 on t520sds
Windowing system distributor `The X.Org Foundation', version 11.0.11004000
configured using `configure  '--with-wide-int''

`delete-other-windows-vertically' behavior depends on the order in which
the windows were created.

emacs -Q
C-x 3
C-x 2
C-x o
C-x o
C-x 2

there are now 4 windows like this:
-------
|  |  |
-------
|  |  |
-------

M-x delete-other-windows-vertically RET

now there are 3 windows like this:
-------
|  |  |
---|  |
|  |  |
-------

which is correct.

Now, create the 4 windows in a different order:

emacs -Q
C-x 2
C-x 3
C-x o
C-x o
C-x 3

there are now 4 windows like this:
-------
|  |  |
-------
|  |  |
-------

M-x delete-other-windows-vertically RET

now there are 3 windows like this:
-------
|     |
-------
|  |  |
-------

which is _WRONG_.


-- 
Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X 11.0.11004000
http://thereligionofpeace.com http://jihadwatch.org http://truepeace.org
http://honestreporting.com http://openvotingconsortium.org http://camera.org
Those who can't write, write manuals.

Message #8 received at 10381 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: sds <at> gnu.org
Cc: 10381 <at> debbugs.gnu.org
Subject: Re: bug#10381: 24.0.92;	delete-other-windows-vertically depends on
	the window split order
Date: Wed, 28 Dec 2011 10:50:23 +0100

> `delete-other-windows-vertically' behavior depends on the order in which
> the windows were created.

Yes.

> M-x delete-other-windows-vertically RET
>
> now there are 3 windows like this:
> -------
> |     |
> -------
> |  |  |
> -------
>
> which is _WRONG_.

Why?  Your doc-string says

  Delete the windows in the same column with WINDOW, but not WINDOW itself.

That sentence is vague but doesn't contradict what the function does.

If you want the function do something different, I'd suggest reading
section 28.2 Windows and Frames of the Elisp manual first and make
yourself acquainted with internal windows.  Then you will probably
understand that the behavior you apparently strive for cannot be
obtained when the first split of a frame's root window creates windows
one above the other.

martin

Message #11 received at 10381 <at> debbugs.gnu.org (full text, mbox):

From: Sam Steingold <sds <at> gnu.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 10381 <at> debbugs.gnu.org
Subject: Re: bug#10381: 24.0.92;
	delete-other-windows-vertically depends on the window split order
Date: Wed, 28 Dec 2011 12:50:34 -0500

> * martin rudalics <ehqnyvpf <at> tzk.ng> [2011-12-28 10:50:23 +0100]:
>
>> `delete-other-windows-vertically' behavior depends on the order in which
>> the windows were created.
>
> Yes.
>
>> M-x delete-other-windows-vertically RET
>>
>> now there are 3 windows like this:
>> -------
>> |     |
>> -------
>> |  |  |
>> -------
>>
>> which is _WRONG_.
>
> Why?

Because in this case delete-other-windows-vertically deletes windows
horizontally.
I would have understood if the function did _nothing_, but deleting
windows horizontally is clearly wrong.

> Your doc-string says
>
>   Delete the windows in the same column with WINDOW, but not WINDOW itself.
>
> That sentence is vague but doesn't contradict what the function does.

this makes for a very unintuitive notion of a column.

> If you want the function do something different, I'd suggest reading
> section 28.2 Windows and Frames of the Elisp manual first and make
> yourself acquainted with internal windows.  Then you will probably
> understand that the behavior you apparently strive for cannot be
> obtained when the first split of a frame's root window creates windows
> one above the other.

this is very unfortunate.


-- 
Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X 11.0.11004000
http://www.PetitionOnline.com/tap12009/ http://memri.org http://dhimmi.com
http://pmw.org.il http://jihadwatch.org http://palestinefacts.org
A professor is someone who talks in someone else's sleep.

Message #14 received at 10381 <at> debbugs.gnu.org (full text, mbox):

From: Sam Steingold <sds <at> gnu.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 10381 <at> debbugs.gnu.org
Subject: Re: bug#10381: 24.0.92;
	delete-other-windows-vertically depends on the window split order
Date: Wed, 28 Dec 2011 13:02:17 -0500

> * martin rudalics <ehqnyvpf <at> tzk.ng> [2011-12-28 10:50:23 +0100]:
>
> If you want the function do something different, I'd suggest reading
> section 28.2 Windows and Frames of the Elisp manual first and make

C-h i runs the command info:
in Elisp manual:

28 Maintaining Large Programs
28.2 Change Logs

you probably meant

20.2 Splitting Windows

which does not speak about columns of windows.

> yourself acquainted with internal windows.

C-s in info does not find "internal w"


The bottom line is that there should be an easy way to merge two windows
which is one under the other, no matter what the history of their
creation was.

-- 
Sam Steingold (http://sds.podval.org/) on Ubuntu 11.10 (oneiric) X 11.0.11004000
http://memri.org http://mideasttruth.com http://honestreporting.com
http://jihadwatch.org http://pmw.org.il http://thereligionofpeace.com
Flying is not dangerous; crashing is.

Message #17 received at 10381 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: sds <at> gnu.org
Cc: 10381 <at> debbugs.gnu.org
Subject: Re: bug#10381: 24.0.92;	delete-other-windows-vertically depends on
	the window split order
Date: Wed, 28 Dec 2011 19:34:43 +0100

> Because in this case delete-other-windows-vertically deletes windows
> horizontally.

Really?

> I would have understood if the function did _nothing_, but deleting
> windows horizontally is clearly wrong.

If you want the function to do nothing in that case, you would have to
tell it do nothing.  `window-combined-p' can help here.

>>   Delete the windows in the same column with WINDOW, but not WINDOW itself.
>>
>> That sentence is vague but doesn't contradict what the function does.
>
> this makes for a very unintuitive notion of a column.

You probably should use the term "edge" instead of "column".  Then you
would see that the function indeed deletes every window whose
corresponding edge has the same coordinate value as that of WINDOW.

>>  Then you will probably
>> understand that the behavior you apparently strive for cannot be
>> obtained when the first split of a frame's root window creates windows
>> one above the other.
>
> this is very unfortunate.

... but deeply rooted in the way Emacs splits windows ever since.

martin

Message #20 received at 10381 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: sds <at> gnu.org
Cc: 10381 <at> debbugs.gnu.org
Subject: Re: bug#10381: 24.0.92;	delete-other-windows-vertically depends on
	the window split order
Date: Wed, 28 Dec 2011 19:35:00 +0100

> C-h i runs the command info:
> in Elisp manual:
>
> 28 Maintaining Large Programs
> 28.2 Change Logs

If you read this your are in the Emacs manual.  Elisp manual stands for
the "The Emacs Lisp Reference Manual".

martin

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