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

[Reiner Steib <reinersteib+gmane@imap.cc>]

Hi,

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.)

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").

Bye, Reiner.

[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 :  [...]
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`----
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