bug#22861: 25.0.90; mm-display-external deletes all other windows

bug#22861: 25.0.90; mm-display-external deletes all other windows

[Ingo Lohmar]

Any mail buffer with a MIME part configured for "external"
(separate-buffer) display should do.  If you have multiple windows open,
mm-decode.el's mm-display-part (clicking/RET on a MIME part) creates a
buffer to display the part, and then calls (delete-other-windows).  This
is a bug --- destroying the window configuration like this should not
happen if the user has not demanded it (via configuration or via
customizing a hook variable).



In GNU Emacs 25.0.90.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.7)
 of 2016-02-10 built on acer
Repository revision: 7777e8089fe3ea260b3f591e67c0e66c44d9969e
Windowing system distributor 'The X.Org Foundation', version 11.0.11703000
System Description:	Debian GNU/Linux testing-updates (sid)

Configured using:
 'configure --with-imagemagick'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY LIBSELINUX LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Org

Minor modes in effect:
  ido-everywhere: t
  global-git-commit-mode: t
  async-bytecomp-package-mode: t
  TeX-PDF-mode: t
  TeX-source-correlate-mode: t
  shell-dirtrack-mode: t
  org-indent-mode: t
  dired-async-mode: t
  goto-address-mode: t
  beacon-mode: t
  mimuma-global-mode: t
  gud-tooltip-mode: t
  diff-auto-refine-mode: t
  ivy-mode: t
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  savehist-mode: t
  xterm-mouse-mode: t
  ws-butler-global-mode: t
  ws-butler-mode: t
  global-auto-revert-mode: t
  desktop-save-mode: t
  my/window-number-mode: t
  company-skewer-mode: t
  company-statistics-mode: t
  global-company-mode: t
  company-mode: t
  show-smartparens-global-mode: t
  show-smartparens-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  delete-selection-mode: t
  guide-key-mode: t
  server-mode: t
  global-eldoc-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: org-auto-fill-function
  transient-mark-mode: t

Recent messages:
Git finished [2 times]
next-line: End of buffer [10 times]
wconf: Switched to configuration 0:def
Auto-saving...done
TODO state changed to TODO
[... snipping unrelated messages ...]

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Memory information:
((conses 16 3856511 539081)
 (symbols 48 72801 0)
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 (string-bytes 1 8730959)
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bug#22861: 25.0.90; mm-display-external deletes all other windows

[Lars Ingebrigtsen]

Ingo Lohmar <i.lohmar@gmail.com> writes:

> Any mail buffer with a MIME part configured for "external"
> (separate-buffer) display should do.  If you have multiple windows open,
> mm-decode.el's mm-display-part (clicking/RET on a MIME part) creates a
> buffer to display the part, and then calls (delete-other-windows).  This
> is a bug --- destroying the window configuration like this should not
> happen if the user has not demanded it (via configuration or via
> customizing a hook variable).

Makes sense, I think.  I've now done so on the Emacs trunk, and we'll
see how that feels in practice.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no