Package: emacs;
Reported by: Johan Claesson <johanclaesson <at> bredband.net>
Date: Thu, 3 Jan 2013 20:32:02 UTC
Severity: normal
Tags: fixed, patch
Found in version 24.2
Fixed in version 26.1
Done: npostavs <at> users.sourceforge.net
Bug is archived. No further changes may be made.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Johan Claesson <johanclaesson <at> bredband.net> To: bug-gnu-emacs <at> gnu.org Subject: 24.2; term.el is confused when bash prints almost 4096 bytes Date: Thu, 03 Jan 2013 21:31:16 +0100
[Message part 1 (text/plain, inline)]
emacs -Q
M-x ansi-term
/bin/bash
cd /tmp
printf '%4090s' x
On my system this gives the error message:
error in process filter: No such directory found via CDPATH environment variable
I think the following is happening:
- Bash will after each command send ?\032 and the current directory
"/tmp" to inform term.el.
- Bash output is buffered in 4096 bytes chunks. The end of the first
chunk will be "/tm"
- term.el interprets "/tm" as the current directory and tries to cd
there. Since /tm does not exist it signals an error.
I don't know if this buffer size of 4096 varies from system to system.
In that case maybe the above recipe will not trigger the error on all
systems.
The following term.el patch is an attempt to fix this:
--- original/term.el 2013-01-03 20:33:13.862726000 +0100
+++ elisp/term.el 2013-01-03 20:35:02.374726000 +0100
@@ -2895,11 +2895,11 @@
(beep t))
((and (eq char ?\032)
(not handled-ansi-message))
- (let ((end (string-match "\r?$" str i)))
+ (let ((end (string-match "\r?\n" str i)))
(if end
(funcall term-command-hook
(prog1 (substring str (1+ i) end)
- (setq i (match-end 0))))
+ (setq i (1- (match-end 0)))))
(setq term-terminal-parameter (substring str i))
(setq term-terminal-state 4)
(setq i str-length))))
I guess that all 032 escape sequences ends with a newline and that this
is what the regex wants to detect. But the current regex "\r?$" will
match all strings. And therefore the mechanism for saving the first
part of the command until the second part arrives will never run.
Regards,
/Johan
[term.patch (text/x-diff, inline)]
--- original/term.el 2013-01-03 20:33:13.862726000 +0100
+++ elisp/term.el 2013-01-03 20:35:02.374726000 +0100
@@ -2895,11 +2895,11 @@
(beep t))
((and (eq char ?\032)
(not handled-ansi-message))
- (let ((end (string-match "\r?$" str i)))
+ (let ((end (string-match "\r?\n" str i)))
(if end
(funcall term-command-hook
(prog1 (substring str (1+ i) end)
- (setq i (match-end 0))))
+ (setq i (1- (match-end 0)))))
(setq term-terminal-parameter (substring str i))
(setq term-terminal-state 4)
(setq i str-length))))
[Message part 3 (text/plain, inline)]
In GNU Emacs 24.2.1 (i686-pc-linux-gnu, GTK+ Version 2.24.10) of 2012-09-03 on goblin Windowing system distributor `The X.Org Foundation', version 11.0.11203000 Configured using: `configure '--prefix=/home/jcl/usr' '--without-toolkit-scroll-bars' '-C' '--disable-maintainer-mode' '--without-compress-info'' 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: Buffer Menu Minor modes in effect: global-cwarn-mode: t which-function-mode: t display-time-mode: t icomplete-mode: t minibuffer-depth-indicate-mode: t diff-auto-refine-mode: t shell-dirtrack-mode: t ido-everywhere: t electric-layout-mode: t electric-indent-mode: t mouse-wheel-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: <up> <up> <up> <up> <down> <return> <C-tab> C-q C-q SPC C-r <return> C-n C-n C-n C-n C-n C-n C-n <tab> C-a C-k C-k C-k C-k C-k C-k C-k C-k C-x C-s <C-tab> <up> <return> <C-tab> <C-tab> <return> <return> <return> <C-tab> M-x m a n <return> d i f f <return> C-s n a u r <end> M-x m a n <return> p a t c h <return> C-s C-s <C-tab> d i f f SPC - N a u r SPC o r i <tab> <tab> e l i <tab> t e r <tab> C-) SPC t e r m . p a t c h <return> C-x C-f C-f t e r <return> <C-tab> M-x r e p o r t - e m <tab> b <tab> - q <tab> <return> <return> C-g M-x <up> <return> q <C-tab> <C-tab> c d <backspace> <S-backspace> C D P A T H SPC t e r m <return> <tab> <return> <up> <down> <right> <right> <return> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <right> <left> C-x o C-x C-b <down-mouse-2> <mouse-movement> <mouse-2> <C-tab> M-x f i n d - f u n <tab> <return> r e p l <backspace> o r t - e m <tab> b u <tab> - <tab> q <tab> <return> <down> <down> <down> <down> <down> <down> <down> <down> M-f C-s C-d C-r C-r <C-down> <down> <down> <down> <down> C-s C-d C-s C-s <C-down> <C-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <C-M-down> <prior> <prior> <prior> <prior> <prior> <prior> <prior> <prior> <prior> <prior> <prior> <next> <next> <next> <C-tab> M-x <up> <down> r e p o r t - e m <tab> b <tab> <return> Recent messages: Quit call-interactively: Buffer is read-only: #<buffer *Existing Emacs Bugs*> Contacting host: debbugs.gnu.org:80 Reporting new bug! [2 times] Commands: d, s, x, u; f, o, 1, 2, m, v; ~, %; q to quit; ? for help. Reporting new bug! Making completion list... Mark saved where search started [2 times] scroll-down: Beginning of buffer [2 times] Reverting buffer `procmail_inbox'. Load-path shadows: /home/jcl/elisp/term hides /home/jcl/usr/share/emacs/24.2/lisp/term /home/jcl/elisp/elpa/emms-20121219.1939/tq hides /home/jcl/usr/share/emacs/24.2/lisp/emacs-lisp/tq Features: (shadow emacsbug smerge-mode gnus-fun vc-bzr man tabify w3m-form w3m-lnum w3m-bookmark w3m-tabmenu w3m-session cl-specs edebug jcl-wesnoth-init wesnoth-mode wesnoth-wml-data wesnoth-update emms-bookmarks emms-lastfm-client emms-cue emms-mode-line-icon emms-browser emms-playlist-sort emms-last-played emms-player-xine emms-player-mpd emms-lyrics emms-url emms-streams emms-tag-editor emms-info-metaflac emms-mark emms-playlist-limit emms-volume emms-volume-amixer emms-i18n emms-history emms-score emms-stream-info emms-metaplaylist-mode elp nnrss xml mm-url tramp-cache mailalias hippie-exp dabbrev gnus-dired url-cache url-http url-gw url-auth haskell-mode jcl-w3m w3m-search jcl-work-buffer jcl-games jcl-text-translator-init text-translator text-translator-window text-translator-vars 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