bug#18756: 24.4; shell-script-mode does wrong indentation

[Daniel Daboul <danieldaboul@gmail.com>]

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M-x shell-script-mode<Enter>
#hi<Enter>
ls<Enter>
x-3<Enter>

With every <Enter> key-press the current line gets indeted, so that
the buffer looks like:
    #hi
        ls
            x=3

<Tab> also mis-behaves. Emacs 24.3.1, OTOH, works fine for me.



In GNU Emacs 24.4.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2014-10-17 on icsl5123
System Description:    SUSE Linux Enterprise Server 10 (x86_64)

Configured using:
 `configure --prefix=/nfs/iil/home/ddaboul/r/sles10 --with-gif=no
 --without-pop --without-sound --without-gpm --without-dbus
 --with-x-toolkit=lucid'

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

Major mode: Shell-script

Minor modes in effect:
  sh-electric-here-document-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-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
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC [ > 0 ; 2 0 8 ; 0 c ESC x s h e l l - s c r i p
t - m o d e RET # h i RET l s RET x = 3 RET ESC x r
e p o r t - e m a c s - b u g RET

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
No indentation for this shell type.

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util help-fns mail-prsvr mail-utils sh-script smie executable xterm
time-date tooltip electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment lisp-mode prog-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer nadvice loaddefs button
faces cus-face macroexp files text-properties overlay sha1 md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dynamic-setting x-toolkit x multi-tty
emacs)

Memory information:
((conses 16 83253 3991)
 (symbols 48 18103 0)
 (miscs 40 31 113)
 (strings 32 12327 4537)
 (string-bytes 1 361598)
 (vectors 16 7894)
 (vector-slots 8 361363 27987)
 (floats 8 63 284)
 (intervals 56 186 0)
 (buffers 960 11)
 (heap 1024 8017 572))

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