* display zero with space U+200B
@ 2010-09-09 23:48 Florian Kaufmann
2010-09-09 23:58 ` Florian Kaufmann
2010-09-10 1:42 ` Pascal J. Bourguignon
0 siblings, 2 replies; 3+ messages in thread
From: Florian Kaufmann @ 2010-09-09 23:48 UTC (permalink / raw)
To: help-gnu-emacs
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.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: display zero with space U+200B
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
1 sibling, 0 replies; 3+ messages in thread
From: Florian Kaufmann @ 2010-09-09 23:58 UTC (permalink / raw)
To: help-gnu-emacs
of course I meant zero width space
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: display zero with space U+200B
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
1 sibling, 0 replies; 3+ messages in thread
From: Pascal J. Bourguignon @ 2010-09-10 1:42 UTC (permalink / raw)
To: help-gnu-emacs
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/
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2010-09-09 23:58 ` Florian Kaufmann
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