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bug#14376: 24.3; comment-search-forward in SQL-mode raises an error

From: Eric Hanchrow
Subject: bug#14376: 24.3; comment-search-forward in SQL-mode raises an error
Date: Thu, 9 May 2013 13:04:54 -0700

This bug report will be sent to the Bug-GNU-Emacs mailing list
and the GNU bug tracker at debbugs.gnu.org.  Please check that
the From: line contains a valid email address.  After a delay of up
to one day, you should receive an acknowledgment at that address.

Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from `emacs -Q':

* Create a file that contains three bytes: two dashes followed by a
* Start emacs -Q 
* M-x sql-mode RET
* M-<
* M-: (comment-search-forward (point-max) t) RET

You'll see this error:

    Debugger entered--Lisp error: (wrong-type-argument stringp nil)
      comment-search-forward(4 t)
      eval((comment-search-forward (point-max) t) nil)
      eval-_expression_((comment-search-forward (point-max) t) nil)
      call-interactively(eval-_expression_ nil nil)

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file

In GNU Emacs 24.3.1 (x86_64-apple-darwin, NS apple-appkit-1038.36)
 of 2013-03-12 on bob.porkrind.org
Windowing system distributor `Apple', version 10.3.1187
Configured using:
 `configure '--host=x86_64-apple-darwin' '--build=i686-apple-darwin'
 '--with-ns' 'build_alias=i686-apple-darwin'
 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.7

Important settings:
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: SQL[ANSI]

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-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
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-x C-f / t m p / f r o t z . s q l <return> - - <return> 
- - SPC H e y SPC y o u <return> - - <return> M-< M-: 
M-( c o m m e n t - s e a r c h - f o r w a r d M-( 
p o i n t - m a x C-f SPC t <return> q M-> C-SPC C-p 
C-p C-w M-. C-g M-> M-: M-p <return> M-< M-: M-p <return> 
q M-> C-x C-s M-! s t a t SPC f r <tab> <return> M-x 
r e p o r t - e m a c s - b <tab> <return>

Recent messages:
Mark set
Mark set
Entering debugger...
Back to top level.
Mark set
Saving file /tmp/frotz.sql...
Wrote /tmp/frotz.sql
16777224 1250723 -rw-r--r-- 1 erichanchrow wheel 0 3 "May  9 13:00:57 2013" "May  9 13:00:57 2013" "May  9 13:00:57 2013" "May  9 13:00:57 2013" 4096 8 0 frotz.sql

Load-path shadows:
None found.

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