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Re: whitespace-mode and visual-line-mode


From: Matt McClure
Subject: Re: whitespace-mode and visual-line-mode
Date: Wed, 25 Apr 2012 10:17:07 -0400

On Wed, Apr 25, 2012 at 5:57 AM, Eli Zaretskii <address@hidden> wrote:
> Date: Sun, 22 Apr 2012 20:29:44 -0400
> From: Matt McClure <address@hidden>
>
> How can I make whitespace visible and keep lines wrapped at word boundaries
> simultaneously?

Customize whitespace-display-mappings so that the whitespace
characters are displayed as themselves, instead of as fancy non-ASCII
glyphs.  (You will still have the faces to show the whitespace.)

Hm. I tried, but Emacs still didn't wrap at word boundaries.

Here's my custom value after copy/paste/editing the value from whitespace.el to my emacs.el:

 '(whitespace-display-mappings (quote (
    (space-mark   ?\     [?.]     [?.]) ; space - centered dot
    (space-mark   ?\xA0  [?_]     [?_]) ; hard space - currency
    (space-mark   ?\x8A0 [?_]      [?_]) ; hard space - currency
    (space-mark   ?\x920 [?_]      [?_]) ; hard space - currency
    (space-mark   ?\xE20 [?_]      [?_]) ; hard space - currency
    (space-mark   ?\xF20 [?_]      [?_]) ; hard space - currency
    ;; NEWLINE is displayed using the face `whitespace-newline'
    (newline-mark ?\n    [?$ ?\n]) ; eol - dollar sign
    ;; (newline-mark ?\n    [?\u21B5 ?\n] [?$ ?\n]) ; eol - downwards arrow
    ;; (newline-mark ?\n    [?\u00B6 ?\n] [?$ ?\n]) ; eol - pilcrow
    ;; (newline-mark ?\n    [?\x8AF ?\n]  [?$ ?\n]) ; eol - overscore
    ;; (newline-mark ?\n    [?\x8AC ?\n]  [?$ ?\n]) ; eol - negation
    ;; (newline-mark ?\n    [?\x8B0 ?\n]  [?$ ?\n]) ; eol - grade
    ;;
    ;; WARNING: the mapping below has a problem.
    ;; When a TAB occupies exactly one column, it will display the
    ;; character ?\xBB at that column followed by a TAB which goes to
    ;; the next TAB column.
    ;; If this is a problem for you, please, comment the line below.
    (tab-mark     ?\t    [?\\ ?\t] [?\\ ?\t]) ; tab - left quote mark
    )))
 
Incidentally, `M-x customize-variable RET whitespace-display-mappings` complains when I try to set a value in any fashion: "This field should contain a single character".

For a better solution, please file a feature-request bug report, this
would require changes in the display engine.
 
Done. 

--
Matt McClure
http://www.matthewlmcclure.com
http://www.mapmyfitness.com/profile/matthewlmcclure


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