- From: Bert Bos <bert@w3.org>
- Date: Sun, 24 Dec 2006 11:30:50 +0100
- To: www-style@w3.org
Anne van Kesteren wrote:
>
> Per section 10.8 of CSS 2.1
> http://www.w3.org/TR/2006/WD-CSS21-20061106/visudet.html#line-height
> empty inline elements generate empty inline boxes which will still have
> margins, etc. We implemented this in Opera, but in doing so it appeared
> that quite some internal testcases already relied on the "non-standard"
> behavior so we reverted the fix. We also reverted it because Internet
> Explorer and Firefox don't seem to implement this per the specification:
Not very strong arguments, are they? :-)
>
> http://www.hixie.ch/tests/adhoc/css/box/inline/008.xml
> http://www.hixie.ch/tests/adhoc/css/box/inline/018.html
> http://www.hixie.ch/tests/adhoc/css/box/table/empty-cells/006.html
>
> Perhaps it's better for empty inline elements to not generate empty
> inline boxes.
Why should there be a difference between empty and non-empty elements? I
don't see why <span>x</span> should have different height and margins
then <span></span> (or indeed <span> </span>, even if the space is
collapsed).
Anyway, you'll need empty elements to generate boxes for cases like these:
strut {line-height: 2em}
square {margin-left: 1em}
another-square {content: "\2003" /* em space */}
<p>Some text<strut/> more text<square/> and <another-square/>
Netscape's HTML extension <spacer> is also an example.
Bert
--
Bert Bos ( W 3 C ) http://www.w3.org/
http://www.w3.org/people/bos W3C/ERCIM
bert@w3.org 2004 Rt des Lucioles / BP 93
+33 (0)4 92 38 76 92 06902 Sophia Antipolis Cedex, France
Received on Sunday, 24 December 2006 10:30:58 UTC