bug#18444: 24.3.93; Error running timer 'compilation-auto-jump' from grep-mode

[Martin Apel]

To reproduce the bug, perform the following steps:
emacs -Q
Customize compilation-auto-jump-to-first-error to enabled
M-x rgrep for an arbitrary string in an arbitrary directory
This results in the following error message:

Error running timer `compilation-auto-jump': (error "No grep hit here")

This also avoids using the return key to jump to the location of the hit
displayed by grep.

In GNU Emacs 24.3.93.2 (x86_64-unknown-linux-gnu, X toolkit, Xaw scroll 
bars)
 of 2014-09-03 on debian64
Windowing system distributor `The X.Org Foundation', version 11.0.11600000
System Description:    Debian GNU/Linux testing (jessie)

Configured using:
 `configure --program-suffix=-24.3.93'

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

Major mode: Messages

Minor modes in effect:
  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
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x c u s t o m i z e - g r o u <tab> <return> c o
m p l i <tab> <backspace> <backspace> i l <tab> <return>
<help-echo> <down-mouse-1> <mouse-1> <help-echo> <help-echo>
<down-mouse-1> <mouse-1> <help-echo> <down-mouse-1>
C-x k <return> M-x r e g <backspace> <backspace> g
r e p <return> T e s t <return> <return> <return> <S-down>
<S-up> C-x b * g r e <return> C-x b * M e s <return>
C-x C-b <S-down> C-x o <down> <down> <down> <down>
<up> <return> C-x 1 <help-echo> M-x r e p o <tab> r
t - e m <tab> <return>

Recent messages:
Creating customization items ...done
Resetting customization items...done
Creating customization setup...done
To install your edits, invoke [State] and choose the Set operation
Error running timer `compilation-auto-jump': (error "No grep hit here")
Mark set
End of buffer
Mark set
End of buffer
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
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 help-mode find-dired dired grep compile
comint ansi-color ring cus-edit easymenu cus-start cus-load wid-edit
cl-loaddefs cl-lib 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 dbusbind
gfilenotify dynamic-setting system-font-setting font-render-setting
x-toolkit x multi-tty emacs)

Memory information:
((conses 16 118479 9335)
 (symbols 48 20250 0)
 (miscs 40 827 716)
 (strings 32 17636 3165)
 (string-bytes 1 494491)
 (vectors 16 11292)
 (vector-slots 8 406259 4384)
 (floats 8 80 281)
 (intervals 56 2509 258)
 (buffers 960 18)
 (heap 1024 39879 942))

Martin