Re: 22.2.50; Display of "zero width no-break space" (U+FEFF)

[Reiner Steib]

On Sun, Apr 06 2008, Reiner Steib wrote:

> in Emacs 22.2.50, "zero width no-break space" (U+FEFF) is displayed as
> a hollow box. [1]
>
> I think for normal buffers it should be displayed like ` ' (NO-BREAK
> SPACE, U+00A0) i.e. using the face face `nobreak-space'.  But when
> `nobreak-char-display' is nil, it should not be displayed at all or
> like a normal SPC.  (Dunno what Unicode says about it.)

Any opinions on this?

> In gedit, xedit (with the same font as in Emacs) and Firefox[2], the
> char is displayed like a space char (i.e. not "zero width").

Similar: U+2403

,----
|       character: ␃ (343747, #o1237303, #x53ec3, U+2403)
| [...]
|         display: by this font (glyph code)
|      -Misc-Fixed-Medium-R-SemiCondensed--12-110-75-75-C-60-ISO10646-1 (#x2403)
|    Unicode data:  
|            Name: SYMBOL FOR END OF TEXT
|        Category: other symbol
| Combining class: Spacing
|   Bidi category: Other Neutrals
|        Old name: GRAPHIC FOR END OF TEXT
`----

> [1]
> ,----[ M-x describe-char RET ]
> |       character:  (325983, #o1174537, #x4f95f, U+FEFF)
> |         charset: mule-unicode-e000-ffff
> |              (Unicode characters of the range U+E000..U+FFFF.)
> |      code point: #x72 #x5F
> |          syntax: w  which means: word
> |     buffer code: #x9C #xF3 #xF2 #xDF
> |       file code: #xEF #xBB #xBF (encoded by coding system utf-8)
> |         display: by this font (glyph code)
> |      -Misc-Fixed-Medium-R-SemiCondensed--13-120-75-75-C-60-ISO10646-1 
> (#xFEFF)
> |    Unicode data:  
> |            Name: ZERO WIDTH NO-BREAK SPACE
> |        Category: other format
> | Combining class: Spacing
> |   Bidi category: Boundary Neutral
> |        Old name: BYTE ORDER MARK
> `----
>
> [2] In both lines, the first char after the first space is U+FFFF:
> ,----[ http://article.gmane.org/gmane.discuss/11614/ ]
> |regarding gmane.linux.debian.devel.www :  [...]
> |like http://news.gmane.org/gmane.linux.debian.devel.www 
> `----

Bye, Reiner.
-- 
       ,,,
      (o o)
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