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Re: Making a non-ASCII space character visible


From: Will Parsons
Subject: Re: Making a non-ASCII space character visible
Date: Sat, 16 Jun 2018 17:37:36 -0400
User-agent: slrn/1.0.3 (FreeBSD)

On Saturday, 16 Jun 2018  4:15 PM -0400, Will Parsons wrote:
> I have a desire to use the Unicode character A007 (FIGURE SPACE) in a
> document and to be able to distinguish it visually from a regular ASCII
> space.  This seems to be already done in the case of 00A0 (NO-BREAK
> SPACE) which appears as an underscore with a distinctive face.
>
> It *looks* like I should be able to do this via the customization
> option "Whitespace Display Mappings", but no matter what I do,
> attempting to "Apply" the changes results in an error message, "This
> field should contain a single character".  (This message occurs even
> if I try to change one of the display characters of an existing entry
> in the list and apply.)
>
> Feeling desperate, I copied the existing value of
> whitespace-display-mappings directly into my custom.el file, and
> manually added a new entry for A007 (8199) on the model of the
> existing entry for 00A0 (160), but this seems to have no effect on the
> display.
>
> (This is using Emacs 25, in case it should make a difference.)

Correction:  FIGURE SPACE is actually 0x2007, not 0xA007, but that's
simply a mistake in my post, not the actual code.  (Sorry for not
being more careful.)

-- 
Will


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