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bug#11224: 23.2; `comint-history-isearch' with value 'dwim causes error
From: |
Wesley Dawson |
Subject: |
bug#11224: 23.2; `comint-history-isearch' with value 'dwim causes error when comint process is finished |
Date: |
Wed, 11 Apr 2012 02:49:06 -0700 |
Setting `comint-history-isearch' to 'dwim causes comint buffers where
the process has exited to give the following error:
(comint-after-pmark-p: Wrong type argument: processp, nil)
isearch works as expected after the message, however. Following is a fix
to `comint-after-pmark-p', which makes it simply return nil if the
process has already ended:
(defun comint-after-pmark-p ()
"Return t if point is after the process output marker.
Return nil if the process has ended."
(let* ((process (get-buffer-process (current-buffer)))
(pmark (and process (process-mark process))))
(and pmark (<= (marker-position pmark) (point)))))
It seems it is currently impossible to recover the input history once
the process exits, so I believe this is the sensible thing to do. In
addition, `async-shell-command' is often used to execute arbitrary
long-running processes that don't require input but that you don't want
to hang emacs, and so an input history won't even be available in those
cases.
Recipe for emacs -Q:
(setq comint-history-isearch 'dwim)
C-j
M-x async-shell-command : RET
C-x o
C-s (comint-after-pmark-p: Wrong type argument: processp, nil)
In GNU Emacs 23.2.1 (i486-pc-linux-gnu)
of 2010-12-11 on raven, modified by Debian
configured using `configure '--build' 'i486-linux-gnu' '--build'
'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/23.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.2/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.2/leim'
'--with-x=no' '--without-gconf' 'build_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN
-g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''
Important settings:
value of $LC_ALL: en_US.UTF-8
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: Shell
Minor modes in effect:
shell-dirtrack-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
ESC [ > 0 ; 2 7 7 ; 0 c ESC ] 1 1 ; r g b : a 5 a 5
/ 2 a 2 a / 2 a 2 a ESC \ ( s e t q SPC c o m i n t
- h i s t o r y - i s e a r c h SPC ' d w i m ) C-j
ESC & : RET C-x o C-s ESC x r e p o r t - e m a c s
- b u g RET
Recent messages:
("emacs")
For information about GNU Emacs and the GNU system, type C-h C-a.
:: finished.
comint-after-pmark-p: Wrong type argument: processp, nil
Load-path shadows:
/usr/share/emacs/23.2/site-lisp/debian-startup hides
/usr/share/emacs/site-lisp/debian-startup
Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap
mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader
gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit
mailheader canlock sha1 hex-util hashcash mail-utils emacsbug shell
comint ring ediff-hook vc-hooks lisp-float-type lisp-mode register page
menu-bar rfn-eshadow timer select mldrag mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces
cus-face files text-properties overlay md5 base64 format env code-pages
mule custom widget hashtable-print-readable backquote
make-network-process dbusbind multi-tty emacs)
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- bug#11224: 23.2; `comint-history-isearch' with value 'dwim causes error when comint process is finished,
Wesley Dawson <=