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Re: border-bottom-width-083/084 assume space in default font is 4px wide

From: Gérard Talbot <css21testsuite@gtalbot.org>
Date: Thu, 14 Oct 2010 10:17:41 -0700
Message-ID: <10e965d5e501c95a602a25cd46f83c9e.squirrel@cp3.shieldhost.com>
To: "L. David Baron" <dbaron@dbaron.org>
Cc: public-css-testsuite@w3.org

> http://test.csswg.org/suites/css2.1/20101001/xhtml1/border-bottom-width-083.xht
> http://test.csswg.org/suites/css2.1/20101001/xhtml1/border-bottom-width-084.xht
> http://test.csswg.org/suites/css2.1/20101001/html4/border-bottom-width-083.htm
> http://test.csswg.org/suites/css2.1/20101001/html4/border-bottom-width-084.htm
>
> These tests assume that a space in the default font is 4 pixels
> wide.  In Firefox on Linux, it appears to be 5 pixels wide, and
> therefore the tests have a one-pixel-wide column of red at the left
> edge.
>
> To explain in a drop more detail, since it wasn't immediately
> obvious:  the test consists of two 96px by 96px (really 1in by 1in,
> and the test suite assumes 96dpi) inline-blocks, separated by a
> space.  The second has margin-left: -100px to cause them to overlap,
> but this only works if a space in the default font is 4px wide.

David,

You have good eyes! This is a nice catch!

I confirm your findings and confirm that this one-pixel-wide column of
red at the left edge is also happening in Opera 10.63 (build 6450) and
in Konqueror 4.5.1.

Opera 10.63 fails this test pretty bad btw.

regards, Gérard
-- 
Contributions to the CSS 2.1 test suite:
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CSS 2.1 test suite (RC2; October 1st 2010):
http://test.csswg.org/suites/css2.1/20101001/html4/toc.html

CSS 2.1 test suite contributors:
http://test.csswg.org/source/contributors/
Received on Thursday, 14 October 2010 17:18:16 GMT

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