From: Juri Linkov <juri@jurta.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Chong Yidong <cyd@stupidchicken.com>, emacs-devel@gnu.org
Subject: Re: C-n and C-a
Date: Thu, 12 Feb 2009 00:45:48 +0200 [thread overview]
Message-ID: <87vdrgwq1v.fsf@jurta.org> (raw)
In-Reply-To: <jwvfxiozo7h.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Sun, 08 Feb 2009 15:08:57 -0500")
>> For starters, the following patch does this for dired-mode:
>
> FWIW, I think the right patch for dired would be to set truncate-lines
> to t.
I have no opinion on the default of truncate-lines in dired but I think
setting word-wrap to nil in dired-mode is necessary as well to prevent
the problem I described in the case when someone sets truncate-lines to nil
and word-wrap to t globally.
There are also two other ways to mitigate the word-wrap problem in Dired:
1. display arrows at the right fringe in visual-line-mode indicating
that the file name is wrapped to the left side of the dired buffer;
2. add an option to the variable word-wrap to wrap at word boundaries
instead of whitespace as is currently implemented. Thus wrapping might
occur inside a long file name that has non-word non-whitespace characters,
and it's likely that at least the first word will remain unwrapped.
However, this is not for the coming release.
For the same reason I think we should not set word-mode in
visual-line-mode. Someone might want to enable visual-line-mode in
dired and stumble upon the same problem. The following patch
fixes this.
Also there is a problem with the terminology. The term "logical line"
causes cognitive dissonance - it is a common synonym of "virtual line"
and is opposite to the "real line". But currently "logical line"
is used as a synonym of "real line".
From Jargon File 4.4.4 (14 Aug 2003):
virtual
1. Common alternative to logical; often used to refer to the
artificial objects (like addressable virtual memory larger than
physical memory) simulated by a computer system as a convenient way
to manage access to shared resources.
2. Simulated; performing the functions of something that isn't
really there. An imaginative child's doll may be a virtual playmate.
Oppose real.
I suggest using the term "real lines" instead of "logical lines".
Index: lisp/simple.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/simple.el,v
retrieving revision 1.971
diff -c -r1.971 simple.el
*** lisp/simple.el 8 Feb 2009 00:46:38 -0000 1.971
--- lisp/simple.el 11 Feb 2009 22:44:57 -0000
***************
*** 4554,4564 ****
(defvar visual-line--saved-state nil)
(define-minor-mode visual-line-mode
! "Redefine simple editing commands to act on visual lines, not logical lines.
! This also turns on `word-wrap' in the buffer."
:keymap visual-line-mode-map
:group 'visual-line
:lighter " wrap"
--- 4564,4574 ----
(defvar visual-line--saved-state nil)
(define-minor-mode visual-line-mode
! "Redefine simple editing commands to act on visual lines, not real lines.
! This also turns off `truncate-lines' in the buffer."
:keymap visual-line-mode-map
:group 'visual-line
:lighter " wrap"
***************
*** 4566,4584 ****
;; visual-line-mode is turned off.
(dolist (var '(line-move-visual truncate-lines
truncate-partial-width-windows
! word-wrap fringe-indicator-alist))
(if (local-variable-p var)
(push (cons var (symbol-value var))
visual-line--saved-state)))
(set (make-local-variable 'line-move-visual) t)
(set (make-local-variable 'truncate-partial-width-windows) nil)
(setq truncate-lines nil
- word-wrap t
fringe-indicator-alist
(cons (cons 'continuation visual-line-fringe-indicators)
fringe-indicator-alist)))
(kill-local-variable 'line-move-visual)
- (kill-local-variable 'word-wrap)
(kill-local-variable 'truncate-lines)
(kill-local-variable 'truncate-partial-width-windows)
(kill-local-variable 'fringe-indicator-alist)
--- 4576,4592 ----
;; visual-line-mode is turned off.
(dolist (var '(line-move-visual truncate-lines
truncate-partial-width-windows
! fringe-indicator-alist))
(if (local-variable-p var)
(push (cons var (symbol-value var))
visual-line--saved-state)))
(set (make-local-variable 'line-move-visual) t)
(set (make-local-variable 'truncate-partial-width-windows) nil)
(setq truncate-lines nil
fringe-indicator-alist
(cons (cons 'continuation visual-line-fringe-indicators)
fringe-indicator-alist)))
(kill-local-variable 'line-move-visual)
(kill-local-variable 'truncate-lines)
(kill-local-variable 'truncate-partial-width-windows)
(kill-local-variable 'fringe-indicator-alist)
--
Juri Linkov
http://www.jurta.org/emacs/
next prev parent reply other threads:[~2009-02-11 22:45 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 14:32 C-n and C-a Richard M Stallman
2009-01-29 15:10 ` Tassilo Horn
2009-01-29 16:09 ` Harald Hanche-Olsen
2009-01-29 17:15 ` Tassilo Horn
2009-01-29 19:40 ` Adrian Robert
2009-01-30 0:32 ` Juri Linkov
2009-01-30 1:20 ` Stefan Monnier
2009-01-30 9:45 ` Eli Zaretskii
2009-01-31 17:45 ` Juri Linkov
2009-01-31 19:47 ` Stefan Monnier
2009-02-02 1:45 ` Juri Linkov
2009-01-31 20:33 ` Chong Yidong
2009-02-02 1:47 ` Juri Linkov
2009-01-30 7:25 ` Richard M Stallman
2009-01-29 18:24 ` Karl Fogel
2009-01-29 18:48 ` Harald Hanche-Olsen
2009-01-29 21:41 ` Stefan Monnier
2009-01-30 16:07 ` Sascha Wilde
2009-01-31 20:34 ` Chong Yidong
2009-01-30 0:29 ` Juri Linkov
2009-01-30 6:12 ` mail
2009-01-31 17:45 ` Juri Linkov
2009-01-31 22:35 ` Drew Adams
2009-02-01 20:11 ` Leo
2009-02-03 15:11 ` Carsten Dominik
2009-02-02 1:54 ` Juri Linkov
2009-02-02 2:25 ` Drew Adams
2009-02-02 9:45 ` Juri Linkov
2009-02-06 0:45 ` Juri Linkov
2009-02-06 16:04 ` Chong Yidong
2009-02-08 0:48 ` Juri Linkov
2009-02-08 20:08 ` Stefan Monnier
2009-02-09 21:22 ` Christian Schlauer
2009-02-09 22:02 ` Drew Adams
2009-02-10 2:05 ` Stefan Monnier
2009-02-10 3:11 ` Drew Adams
2009-02-11 22:45 ` Juri Linkov [this message]
2009-02-12 2:01 ` Miles Bader
2009-02-12 10:05 ` Juri Linkov
2009-02-12 11:04 ` Miles Bader
2009-02-13 6:33 ` Richard M Stallman
2009-02-07 1:52 ` Stefan Monnier
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