From: pjb@informatimago.com (Pascal J. Bourguignon)
To: help-gnu-emacs@gnu.org
Subject: Re: display zero with space U+200B
Date: Fri, 10 Sep 2010 03:42:20 +0200 [thread overview]
Message-ID: <87bp869xxf.fsf@kuiper.lan.informatimago.com> (raw)
In-Reply-To: 460c5513-10aa-45f5-9449-11fca22068b5@z25g2000vbn.googlegroups.com
Florian Kaufmann <sensorflo@gmail.com> writes:
> I have a file containing zero with space characters (unicode code
> point U+200B). Any idea how I can get a visual feedback where they
> are? I tried to customize whitespace-display-mappings of whitespace.el
> like this:
>
> (defcustom whitespace-display-mappings '( (space-mark ?\x200B [?\xB7]
> [?.]) ...
>
> But I still don't see it. Normal spaces are displayed as intented by
> whitespace.el.
My advice would be to delete them from the file.
Since they have a null width, you cannot see them, obviously.
But you could show the characters that are around them.
(let ((zws ?\u200b))
(re-search-forward (format "\\(^%c.\\|.%c.\\|.%c$\\|^%c$\\)" zws zws zws zws)))
Another way to do it would involve compose-region:
(font-lock-add-keywords nil
`((,(format "\\(%c\\)" ?\u200b) ; #\ZERO_WIDTH_SPACE
(1 (progn (compose-region (match-beginning 1) (match-end 1)
?\u2b1b ; #\BLACK_LARGE_SQUARE
'decompose-region)
nil)))))
--
__Pascal Bourguignon__ http://www.informatimago.com/
prev parent reply other threads:[~2010-09-10 1:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-09 23:48 display zero with space U+200B Florian Kaufmann
2010-09-09 23:58 ` Florian Kaufmann
2010-09-10 1:42 ` Pascal J. Bourguignon [this message]
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