emacs 23 whitespace-mode, change newline display glyph

emacs 23 whitespace-mode, change newline display glyph

[Xah Lee]

On Aug 12, 4:31 am, Teemu Likonen <tliko...@iki.fi> wrote:
> On 2009-08-12 11:23 (UTC), Vincent Lefevre wrote:
>
> > Otherwise one can still use the Long Lines mode (longlines-mode, that
> > was already present in Emacs 22), which shows the logical lines in
> > some other way: with a character ("|" in Emacs 22, "¶" in Emacs 23) in
> > a different color at the end of the logical line (but with the
> > longlines mode, the show-trailing-whitespace variable has no effect).
>
> One can pretty much replace longlines-mode with this:
>
>     (visual-line-mode 1)
>     (whitespace-newline-mode 1)
>     (setq fill-column 999999)
>
> This is nicer because longlines-mode is a hack which actually modifies
> the buffer in order to differentiate between hard and soft newlines.
> Emacs 23 has this proper way of doing it.

in my emacs 23 both on Windows and Mac, the white space shows as $,
not ¶, when in whitespace-mode or whitespace-newline-mode.

How to make it show line breaks using ¶ ?

i tried to read the doc... which took me too See also `whitespace-
style', `whitespace-newline' and `whitespace-display-mappings', and
customize... but its rather confusing.

  Xah
∑ http://xahlee.org/

☄

Re: emacs 23 whitespace-mode, change newline display glyph

[CHENG Gao]

*On Wed, 12 Aug 2009 05:21:00 -0700 (PDT)
* Also sprach Xah Lee <xahlee@gmail.com>:

> On Aug 12, 4:31 am, Teemu Likonen <tliko...@iki.fi> wrote:
>> On 2009-08-12 11:23 (UTC), Vincent Lefevre wrote:
>>
>> > Otherwise one can still use the Long Lines mode (longlines-mode, that
>> > was already present in Emacs 22), which shows the logical lines in
>> > some other way: with a character ("|" in Emacs 22, "¶" in Emacs 23) in
>> > a different color at the end of the logical line (but with the
>> > longlines mode, the show-trailing-whitespace variable has no effect).
>>
>> One can pretty much replace longlines-mode with this:
>>
>>     (visual-line-mode 1)
>>     (whitespace-newline-mode 1)
>>     (setq fill-column 999999)
>>
>> This is nicer because longlines-mode is a hack which actually modifies
>> the buffer in order to differentiate between hard and soft newlines.
>> Emacs 23 has this proper way of doing it.
>
> in my emacs 23 both on Windows and Mac, the white space shows as $,
> not ¶, when in whitespace-mode or whitespace-newline-mode.
>
> How to make it show line breaks using ¶ ?
>
> i tried to read the doc... which took me too See also `whitespace-
> style', `whitespace-newline' and `whitespace-display-mappings', and
> customize... but its rather confusing.
>
>   Xah
> ∑ http://xahlee.org/
>
> ☄

Through reading whitespace-mode source, I found this works:

,----
| (setq whitespace-display-mappings '(
|  (newline-mark 10
| 			   [182 10])))
`----

Re: emacs 23 whitespace-mode, change newline display glyph

[Xah Lee]

Xah Lee <xah...@gmail.com>:
> > in my emacs 23 both on Windows and Mac, the white space shows as $,
> > not ¶, when in whitespace-mode or whitespace-newline-mode.
>
> > How to make it show line breaks using ¶ ?

On Aug 12, 5:44 am, CHENG Gao <cheng...@gmail.com> wrote:
> Through reading whitespace-mode source, I found this works:
>
> ,----
> | (setq whitespace-display-mappings '(
> |  (newline-mark 10
> |                          [182 10])))
> `----

Thanks!

 Xah

Re: emacs 23 whitespace-mode, change newline display glyph

[Xah Lee]

On Aug 12, 5:44 am, CHENG Gao <cheng...@gmail.com> wrote:
> > in my emacs 23 both on Windows and Mac, the white space shows as $,
> > not ¶, when in whitespace-mode or whitespace-newline-mode.
>
> > How to make it show line breaks using ¶ ?
>
> > i tried to read the doc... which took me too See also `whitespace-
> > style', `whitespace-newline' and `whitespace-display-mappings', and
> > customize... but its rather confusing.

> Through reading whitespace-mode source, I found this works:
>  (setq whitespace-display-mappings '(
>   (newline-mark 10
>                           [182 10])))

it turns out, you have to set the whole list, not just one. The above
will basically make it not display any glyphs to tabs and spaces.

I spent several hours looking into this, here's the solution:

(setq whitespace-display-mappings
 '(
   (space-mark 32 [183] [46]) ; normal space
   (space-mark 160 [164] [95])
   (space-mark 2208 [2212] [95])
   (space-mark 2336 [2340] [95])
   (space-mark 3616 [3620] [95])
   (space-mark 3872 [3876] [95])
   (newline-mark 10 [182 10]) ; newlne
   (tab-mark 9 [9655 9] [92 9]) ; tab
))

more detail here:

• How to use and setup Emacs's whitespace-mode
  http://xahlee.org/emacs/whitespace-mode.html

  Xah
∑ http://xahlee.org/

☄

Re: emacs 23 whitespace-mode, change newline display glyph

[Stefan Vollmar]

Dear Xah,
dear Cheng,

On 12.08.2009, at 15:47, Xah Lee wrote:

> Xah Lee <xah...@gmail.com>:
>>> in my emacs 23 both on Windows and Mac, the white space shows as $,
>>> not ¶, when in whitespace-mode or whitespace-newline-mode.
>>
>>> How to make it show line breaks using ¶ ?
>
> On Aug 12, 5:44 am, CHENG Gao <cheng...@gmail.com> wrote:
>> Through reading whitespace-mode source, I found this works:
>>
>> ,----
>> | (setq whitespace-display-mappings '(
>> |  (newline-mark 10
>> |                          [182 10])))
>> `----

I had a problem with Global-Show-Newlines in Aquamacs 2.0pr2 which is  
possibly related and David Reitter provided a solution which works  
fine for me:

> From: David Reitter <david.reitter@gmail.com>
> Date: 16. August 2009 15:12:25 MESZ
> To: Emacs on Mac OS X Mailing List <macosx-emacs@email.esm.psu.edu>
> Subject: Re: [OS X Emacs] wrong glyphs in Show-Newlines mode
> Reply-To: Emacs on Mac OS X Mailing List <macosx-emacs@email.esm.psu.edu 
> >
>
> On Aug 16, 2009, at 6:14 AM, Stefan Vollmar wrote:
>
>> in Aquamacs 2.0preview2, when enabling the menu entry  
>> Options:View:Show Newlines the message "Global-Show-Newlines mode  
>> enabled" appears and all newlines are marked with a grey rectangle.  
>> I observed this with several fonts.
>
> Thanks, fixed.  This lets you set your own symbol:
>
> (setq show-newlines-newline-code
>  (vector (make-glyph-code ?\x00B6  'blank-newline) 10))
>
> - David


-- 
Dr. Stefan Vollmar, Dipl.-Phys.
Max-Planck-Institut für neurologische Forschung
Gleuelerstr. 50, 50931 Köln, Germany
Tel.: +49-221-4726-213  FAX +49-221-4726-298
Tel.: +49-221-478-5713  Mobile: 0160-93874279
Email: vollmar@nf.mpg.de   http://www.nf.mpg.de

Re: emacs 23 whitespace-mode, change newline display glyph

[Kevin Rodgers]

Xah Lee wrote:
> On Aug 12, 5:44 am, CHENG Gao <cheng...@gmail.com> wrote:
>>> in my emacs 23 both on Windows and Mac, the white space shows as $,
>>> not ¶, when in whitespace-mode or whitespace-newline-mode.
>>> How to make it show line breaks using ¶ ?
>>> i tried to read the doc... which took me too See also `whitespace-
>>> style', `whitespace-newline' and `whitespace-display-mappings', and
>>> customize... but its rather confusing.
> 
>> Through reading whitespace-mode source, I found this works:
>>  (setq whitespace-display-mappings '(
>>   (newline-mark 10
>>                           [182 10])))
> 
> it turns out, you have to set the whole list, not just one. The above
> will basically make it not display any glyphs to tabs and spaces.
> 
> I spent several hours looking into this, here's the solution:
> 
> (setq whitespace-display-mappings
>  '(
>    (space-mark 32 [183] [46]) ; normal space
>    (space-mark 160 [164] [95])
>    (space-mark 2208 [2212] [95])
>    (space-mark 2336 [2340] [95])
>    (space-mark 3616 [3620] [95])
>    (space-mark 3872 [3876] [95])
>    (newline-mark 10 [182 10]) ; newlne
>    (tab-mark 9 [9655 9] [92 9]) ; tab
> ))

Why not just:

(require 'whitespace-mode)
(setq whitespace-display-mappings
       (cons '(newline-mark 10 [182 10]) whitespace-display-mappings))

> more detail here:
> 
> • How to use and setup Emacs's whitespace-mode
>   http://xahlee.org/emacs/whitespace-mode.html
> 
>   Xah
> ∑ http://xahlee.org/
> 
> ☄
> 


-- 
Kevin Rodgers
Denver, Colorado, USA