bug#21015: 25.0.50; Shell is now displayed in another window, what about EShell?

[Mark Karpov <markkarpov@openmailbox.org>]

From Emacs 25 NEWS:

> ** Shell
> 
> When you invoke `shell' interactively, the *shell* buffer will now
> display in a new window. <…>

I would say rather in other window (new is created if needed). Good. I
like this behavior because I still can see buffer that was active before
invocation of shell, but I usually use Emacs shell, not simple
shell. Can we have the same defaults for Emacs shell too? For the sake
of consistency, at least…




In GNU Emacs 25.0.50.14 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.4)
 of 2015-07-06 on arch
Repository revision: 8c81ac97fdd0d1dff7256dace45bdd48324a0963
Windowing system distributor `The X.Org Foundation', version 11.0.11702000
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS 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: iε

Minor modes in effect:
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  electric-indent-mode: t
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  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: do-auto-fill
  transient-mark-mode: t
  auto-fill-mode: 1

Recent messages:
Note: file is write protected
View mode: type C-h for help, h for commands, q to quit.
Quit
Type "q" in help window to restore its previous buffer, C-M-v to scroll help.
Mark set
Quit [2 times]
Type "q" in help window to restore its previous buffer.
Truncate long lines enabled
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Load-path shadows:
None found.

Features:
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