emacs hangs in ansi-term

emacs hangs in ansi-term

[Harald.Maier.BW]

This bug report will be sent to the Free Software Foundation,
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Please write in English, because the Emacs maintainers do not have
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In GNU Emacs 21.2.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-03-18 on athene
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: POSIX
  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: de_DE@euro
  locale-coding-system: iso-latin-9
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

The problem that was discussed in the gnu.emacs.help newsgroup happens
by me always. To produce the bug I do the following:

$ emacs -q --no-site-file
M-x ansi-term
Run program: /bin/bash

Now type in in the buffer *ansi-term* for example 'ls' and then emacs
seems to be in a endless loop and consumes a lots of memory. Stopping
with C-g is not possible. This happens also with the most other
commands. E.g. 'echo $ABC' (ABC is a non exixting env variable)
produces strange output. 'echo $HOME' causes the same as ls. Emacs
hangs!

Harald

Recent input:
<help-echo> <down-mouse-1> <mouse-1> M-x a n s i - 
t e r m <return> <return> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <re
port-emacs-bug>

Recent messages:
(emacs -q --no-site-file)
Loading disp-table...done
Loading tool-bar...done
Loading image...done
Loading tooltip...done
For information about the GNU Project and its goals, type C-h C-p.
Loading term...done
Loading emacsbug...done

Re: emacs hangs in ansi-term

[Harry Kuiper]

Harald.Maier.BW@t-online.de writes:

<snip>
> Please describe exactly what actions triggered the bug
> and the precise symptoms of the bug:
> 
> The problem that was discussed in the gnu.emacs.help newsgroup happens
> by me always. To produce the bug I do the following:
> 
> $ emacs -q --no-site-file
> M-x ansi-term
> Run program: /bin/bash
> 
> Now type in in the buffer *ansi-term* for example 'ls' and then emacs
> seems to be in a endless loop and consumes a lots of memory. Stopping
> with C-g is not possible. This happens also with the most other
> commands. E.g. 'echo $ABC' (ABC is a non exixting env variable)
> produces strange output. 'echo $HOME' causes the same as ls. Emacs
> hangs!

This problem was solved by Daiki Ueno.  His patch will be part of the
next Emacs release.  FYI here is the patch:

Index: term.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/term.el,v
retrieving revision 1.46
diff -u -F^( -r1.46 term.el
--- term.el	3 Feb 2002 11:25:23 -0000	1.46
+++ term.el	14 Apr 2002 00:56:23 -0000
@@ -2827,11 +2827,11 @@ (defun term-emulate-terminal (proc str)
 			   ((eq char ?\^G)
 			    (beep t)) ; Bell
 			   ((eq char ?\032)
-			    (let ((end (string-match "\r?$" str i)))
+			    (let ((end (string-match "\r?\n" str i)))
 			      (if end
-				  (progn (funcall term-command-hook
-						  (substring str (1+ i) end))
-					 (setq i (match-end 0)))
+				  (funcall term-command-hook
+					   (prog1 (substring str (1+ i) end)
+					      (setq i (match-end 0))))
 				(setq term-terminal-parameter
 				      (substring str i))
 				(setq term-terminal-state 4)

-- 
Harry Kuiper                 hkuiper@xs4all.nl
Haarlem, The Netherlands

Re: emacs hangs in ansi-term

[Harald.Maier.BW]

hkuiper@xs4all.nl (Harry Kuiper) writes:

> Harald.Maier.BW@t-online.de writes:
> 
> <snip>
> > 
> > $ emacs -q --no-site-file
> > M-x ansi-term
> > Run program: /bin/bash
> > 
> > Now type in in the buffer *ansi-term* for example 'ls' and then emacs
> > seems to be in a endless loop and consumes a lots of memory. Stopping
> > with C-g is not possible.
> 
> This problem was solved by Daiki Ueno.  His patch will be part of the
> next Emacs release.  FYI here is the patch:

Thanks, the patch works fine.
Harald