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Re: Minor spelling

From: Ian Hickson <ian@hixie.ch>
Date: Mon, 22 Nov 2004 15:58:44 +0000 (UTC)
To: "Justin Wood (Callek)" <116057@bacon.qcc.mass.edu>
Cc: Tantek Çelik <tantek@cs.stanford.edu>, Michael Day <mikeday@yeslogic.com>, public-css-testsuite@w3.org
Message-ID: <Pine.LNX.4.61.0411221546360.13371@dhalsim.dreamhost.com>

On Sun, 21 Nov 2004, Justin Wood (Callek) wrote:
> > >
> > > Well, they're not testing PNG support either, but sure.
> > > 
> > > I've converted all the GIFs to PNGs. This will probably cause IE6 to 
> > > fail on a couple more tests.
> > 
> > This is contrary to some of the CSS test suite philosophy, which is to 
> > not test the things that are not being tested.  And given that GIF 
> > support is more prevalent than PNG support, of the two, GIFs should be 
> > preferred.
>
> In that case I would propose and request that a version of the same test 
> be released both with PNG and GIF versions, with a note that EITHER 
> version's success will "PASS"...
> 
> Yes GIF is more prevelant but current Copyright issues prevent some UA's 
> from supporting GIF at all.

Patent issues.

But: which UAs do not support GIFs yet do support enough of (X)HTML and 
CSS that they will be relevant when showing interoperability of CSS2.1?

(Note that our exit criteria excludes UAs that are not "intended for a 
wide audience" and that could not "be used on a daily basis".)

The simplest compromise from my point of view would be to make the 1x1 
transparent image (the only image that is likely to cause WinIE any 
trouble) a GIF, and the rest PNGs. Or to make the 1x1 image both GIF and 
PNG and use HTTP content negotiation to serve one or the other depending 
on what the UA claims to support. (But bugs in WinIE's HTTP implementation 
may make that self-defeating.)

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Monday, 22 November 2004 15:58:46 GMT

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