--- Begin Message ---
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Subject: |
23.1; ps-print-buffer infinite loop on image-mode |
|
Date: |
Thu, 03 Dec 2009 09:26:27 +1100 |
|
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (gnu/linux) |
A ps-print-buffer on some image files in image-mode goes into an
infinite loop. For example "cut.xpm" in the current emacs cvs,
(progn
(switch-to-buffer "x")
(erase-buffer)
(insert-file-contents (concat data-directory "images/cut.xpm"))
(image-mode)
(ps-print-buffer "/tmp/foo.ps"))
shows message
Formatting... 0%
and then goes away apparently forever.
debug-on-quit says the loop is ps-mule-plot-string. It seems (point)
has gone past the intended `stop' position, so "(= (point) stop)" is not
satisfied, or something like that. Might be the forward-char under
"(looking-at ascii-or-latin-1)" going too far, maybe something to do
with the image overlay, or point movement within image mode ...
(What I actually hoped for was that it might print the image, but
perhaps it doesn't print images at all ...)
In GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.16.5)
of 2009-09-14 on raven, modified by Debian
configured using `configure '--build=i486-linux-gnu' '--host=i486-linux-gnu'
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
'--localstatedir=/var/lib' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim'
'--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars'
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g
-O2' 'LDFLAGS=-g' 'CPPFLAGS=''
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_AU
value of $XMODIFIERS: nil
locale-coding-system: iso-latin-1-unix
default-enable-multibyte-characters: t
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#5108: 23.1; ps-print-buffer infinite loop on image-mode |
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Date: |
Mon, 19 Sep 2011 15:27:36 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
>> (with-temp-buffer
>> (insert-file-contents (concat data-directory "images/cut.xpm"))
>> (image-mode)
>> (ps-print-buffer "/tmp/foo.ps"))
>> shows message
>> Formatting... 0%
>> and then goes away apparently forever.
> I can confirm that this bug is still present in Emacs 24.
Yes, it's the evil `intangible' property at work.
I've installed the patch below which should fix the immediate
inf-loop problem. I also removed the intangible property from
image-mode to avoid similar problems in other codes.
Stefan
--- lisp/ps-mule.el 2011-04-19 13:44:55 +0000
+++ lisp/ps-mule.el 2011-09-19 18:57:29 +0000
@@ -659,7 +659,7 @@
width)
(goto-char from)
(while (not endpos)
- (cond ((= (point) stop)
+ (cond ((>= (point) stop)
(if (= stop to)
(setq endpos stop)
(when (< from stop)
--- End Message ---