GNU bug report logs - #18304
24.3.92; Making and using side windows

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

From: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.92; Making and using side windows
Date: Wed, 20 Aug 2014 17:59:56 +0200

Running this:
emacs -q --eval '(display-buffer-in-major-side-window (current-buffer) (quote right) 0)' -f calendar

I get an error:

Debugger entered--Lisp error: (error "Cannot split side window or parent of side window")
  signal(error ("Cannot split side window or parent of side window"))
  error("Cannot split side window or parent of side window")
  byte-code(...)
  split-window(nil nil)
  split-window-below()
  calendar-basic-setup(nil)
  calendar(nil)
  call-interactively(calendar record nil)
  command-execute(calendar record)
  execute-extended-command(nil "calendar")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)

I have no idea if this is a bug because I don't know how the user is
supposed to use/create side windows (see also #18170).


In GNU Emacs 24.3.92.2 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2014-08-07 on geodiff-mac3

-- 
Nico.

Message #8 received at 18304 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>, 
 18304 <at> debbugs.gnu.org
Subject: Re: bug#18304: 24.3.92; Making and using side windows
Date: Thu, 21 Aug 2014 11:24:18 +0200

> emacs -q --eval '(display-buffer-in-major-side-window (current-buffer) (quote right) 0)' -f calendar
>
> I get an error:
>
> Debugger entered--Lisp error: (error "Cannot split side window or parent of side window")
>    signal(error ("Cannot split side window or parent of side window"))
>    error("Cannot split side window or parent of side window")
>    byte-code(...)
>    split-window(nil nil)
>    split-window-below()
>    calendar-basic-setup(nil)
>    calendar(nil)
>    call-interactively(calendar record nil)
>    command-execute(calendar record)
>    execute-extended-command(nil "calendar")
>    call-interactively(execute-extended-command nil nil)
>    command-execute(execute-extended-command)
>
> I have no idea if this is a bug

There were at least two bugs here, namely

(1) `calendar-basic-setup' calls `split-window-below' without checking
     whether the selected window can be split at all.

(2) `window-splittable-p' doesn't check whether the argument window is a
    side window.

Both should be fixed with revision 117719 on trunk.

> because I don't know how the user is
> supposed to use/create side windows (see also #18170).

Bugs like the ones you found here should get fixed before promoting side
windows generally.

BTW, if you intend to put the calendar in a side window

emacs -q --eval '(display-buffer-in-major-side-window (current-buffer) (quote bottom) 0)' -f calendar

should look better.

martin

Message #11 received at 18304 <at> debbugs.gnu.org (full text, mbox):

From: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Nicolas Richard <theonewiththeevillook <at> yahoo.fr>, 18304 <at> debbugs.gnu.org
Subject: Re: bug#18304: 24.3.92; Making and using side windows
Date: Thu, 21 Aug 2014 11:36:49 +0200

martin rudalics <rudalics <at> gmx.at> writes:
> Both should be fixed with revision 117719 on trunk.

Thanks for fixing it. I'm not using trunk yet, I'll give side windows
more testing after the release.

-- 
Nico.

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