Subject: bug#10196: closed (Re: bug#10196: 24.0.92; prolog-mode error)

From: [email-masked] (GNU bug Tracking System)
Date: Sat, 03 Dec 2011 04:15:02 +0000

Your bug report

#10196: 24.0.92; prolog-mode error

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to [email-masked].

-- 
10196: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=10196
GNU Bug Tracking System
Contact [email-masked] with problems

Subject: Re: bug#10196: 24.0.92; prolog-mode error
From: Stefan Monnier <[email-masked]>
To: Simen Heggestøyl <[email-masked]>
Cc: [email-masked]
Date: Fri, 02 Dec 2011 23:13:59 -0500
List-Id: <debbugs-submit.debbugs.gnu.org>

> Starting from 'emacs -Q', running 'M-x prolog-mode' gives the following
> error message:
>       prolog-find-value-by-system: Wrong type argument: bufferp, nil

Thanks, I've installed the patch below which should avoid this error,
tho it may hide some underlying problem, so if some other problem shows
up, make sure to come back here.

        Stefan

=== modified file 'lisp/progmodes/prolog.el'
--- lisp/progmodes/prolog.el	2011-11-26 08:26:37 +0000
+++ lisp/progmodes/prolog.el	2011-12-03 04:05:34 +0000
@@ -868,8 +868,9 @@
 (defun prolog-find-value-by-system (alist)
   "Get value from ALIST according to `prolog-system'."
   (let ((system (or prolog-system
-                    (buffer-local-value 'prolog-system
-                                        (prolog-inferior-buffer 'dont-run)))))
+                    (let ((infbuf (prolog-inferior-buffer 'dont-run)))
+                      (when infbuf
+                        (buffer-local-value 'prolog-system infbuf))))))
     (if (listp alist)
         (let (result
               id)

Subject: 24.0.92; prolog-mode error
From: Simen Heggestøyl <[email-masked]>
To: <[email-masked]>
Date: Fri, 02 Dec 2011 12:03:48 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

 Starting from 'emacs -Q', running 'M-x prolog-mode' gives the following
 error message:
       prolog-find-value-by-system: Wrong type argument: bufferp, nil

 In GNU Emacs 24.0.92.1 (i686-pc-linux-gnu, GTK+ Version 2.24.8)
  of 2011-12-02 on d610
 Windowing system distributor `The X.Org Foundation', version 
 11.0.11102000
 Important settings:
   value of $LC_ALL: nil
   value of $LC_COLLATE: nil
   value of $LC_CTYPE: nil
   value of $LC_MESSAGES: nil
   value of $LC_MONETARY: nil
   value of $LC_NUMERIC: nil
   value of $LC_TIME: nil
   value of $LANG: en_US.UTF-8
   value of $XMODIFIERS: nil
   locale-coding-system: utf-8-unix
   default enable-multibyte-characters: t

 Major mode: Prolog

 Minor modes in effect:
   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:
 M-x p r o l <tab> <return> M-x r e p o r t - e m <tab>
 <return>

 Recent messages:
 For information about GNU Emacs and the GNU system, type C-h C-a.
 prolog-find-value-by-system: Wrong type argument: bufferp, nil

 Load-path shadows:
 None found.

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