test/css2.1/blocking/margin-collapse: add more info

Author: fantasai

test/css2.1/blocking/margin-collapse.txt

@@ -6,23 +6,32 @@
   * [[http://test.csswg.org/suites/css2.1/latest/html4/margin-collapse-clear-005.htm|margin-collapse-clear-005]] - Microsoft
   * [[http://test.csswg.org/suites/css2.1/latest/html4/margin-collapse-clear-011.htm|margin-collapse-clear-011]] -  Microsoft
 
-All user agents tested on Windows 7 currently fail these tests:
+All browsers tested on Windows 7 currently fail these tests:
   * IE 7, 8, 9
   * Firefox 3.6.13, 4b8
   * Opera 11
   * Safari 5.0.3
   * Chrome 8.0.552.224
 
+The following implementations, however, pass the tests:
+
+  * WebToPDF
+  * Antenna House
+
+The following implementations that currently fail have patches to pass:
+
+  * IE
+  * Mozilla
+
 ==== Relevant links ====
 
   * [[http://lists.w3.org/Archives/Public/public-css-testsuite/2010Dec/0191.html]]
   * [[http://lists.w3.org/Archives/Public/www-style/2010Oct/0819.html]]
+  * [[http://lists.w3.org/Archives/Member/w3c-css-wg/2007JanMar/0514.html]]
 
 ==== Discussion ====
 
-All test cases fail in exactly the same way in all user agents tested.
-
-All implementations tested match the current Dec. 7 2010 spec text.
+All test cases fail in exactly the same way in all failing agents tested, and match the current Dec. 7 2010 spec text. However this text, which was introduced by edits in 2007, does not represent the intended behavior of those edits, which was to make the above tests pass.
 
 Correcting implementations to match the test case will alter the Acid2 test.