Last call document: http://www.w3.org/TR/2012/WD-css3-conditional-20121213/
Editor's draft: http://dev.w3.org/csswg/css3-conditional/
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Issue 1: http://lists.w3.org/Archives/Public/www-style/2012Dec/0224.html improve examples Raised By: Ben Callahan Resolution: Editorial, but will improve examples. Fixed in: https://hg.csswg.org/drafts/rev/06244e910e27 Group response: http://lists.w3.org/Archives/Public/www-style/2013Feb/0231.html
Issue 2: http://lists.w3.org/Archives/Public/www-style/2012Dec/0084.html @supports not( without space Raised By: Simon Pieters Proposal: http://lists.w3.org/Archives/Public/www-style/2012Dec/0277.html Resolution: require spaces, per http://lists.w3.org/Archives/Public/www-style/2012Dec/0330.html Fixed in: https://hg.csswg.org/drafts/rev/34b185ae3bac Group response: http://lists.w3.org/Archives/Public/www-style/2013Feb/0232.html
Issue 3: http://lists.w3.org/Archives/Public/www-style/2013Jan/0070.html What does @supports return when the OS prevents the support? Raised By: James Nurthen Resolution: user and system preferences do not affect what @supports returns; it's only about UA capabilities, and must be the same as declaration fallback. So add a clarification of this, but no substantive change. (Resolved 2013-02-06, AM I.) Fixed in: https://hg.csswg.org/drafts/rev/6e5d9a1539bd Group response: http://lists.w3.org/Archives/Public/www-style/2013Feb/0233.html
Issue 4: http://lists.w3.org/Archives/Public/www-style/2013Jan/0436.html @supports all Raised by: Nicholas Shanks Reply: http://lists.w3.org/Archives/Public/www-style/2013Jan/0442.html Resolution: no change, per rationale in reply (Resolved 2013-02-06, AM I.) Group response: http://lists.w3.org/Archives/Public/www-style/2013Feb/0234.html
Issue 5: Issue in spec about insertRule, followup to Issue 7b also raised as first issue in http://lists.w3.org/Archives/Public/www-style/2013Feb/0228.html Raised by: David Baron, Florian Rivoal Proposed resolution: http://lists.w3.org/Archives/Public/www-style/2013Feb/0229.html Florian agrees: http://lists.w3.org/Archives/Public/www-style/2013Feb/0228.html Edited: http://lists.w3.org/Archives/Public/www-style/2013Feb/0256.html (Commenter agrees, of course.)
Issue 6 (prior to LC publication): http://lists.w3.org/Archives/Public/www-style/2012Nov/0014.html review of the new grammar for @supports Raised by: Florian Rivoal Addressed by: http://lists.w3.org/Archives/Public/www-style/2012Nov/0239.html Commenter agrees: http://lists.w3.org/Archives/Public/www-style/2013Feb/0228.html Resolution: Already fixed prior to LC; commenter agrees.
Issue 7a (prior to LC publication): http://lists.w3.org/Archives/Public/www-style/2012Nov/0329.html Each usage of CSSRuleList and MediaList should link to their definition. Raised by: Arthur Barstow Addressed by: http://lists.w3.org/Archives/Public/www-style/2012Dec/0102.html No response from commenter.
Issue 7b (prior to LC publication): http://lists.w3.org/Archives/Public/www-style/2012Nov/0329.html insertRule() should say what happens if index is already used Raised by: Arthur Barstow Addressed by: http://lists.w3.org/Archives/Public/www-style/2012Dec/0102.html No response from commenter.
Issue 7c (prior to LC publication): http://lists.w3.org/Archives/Public/www-style/2012Nov/0329.html not clear why there is a definition of conditionText in this section Raised by: Arthur Barstow Reason explained in: http://lists.w3.org/Archives/Public/www-style/2012Dec/0102.html No response from commenter.
Issue 7d (prior to LC publication): http://lists.w3.org/Archives/Public/www-style/2012Nov/0329.html for the second definition of supports(), there is a mismatch between the "declaration" argument and the use of "conditionText" in the text below. Raised by: Arthur Barstow Addressed by: http://lists.w3.org/Archives/Public/www-style/2012Dec/0102.html No response from commenter.
Issue 8: second issue in http://lists.w3.org/Archives/Public/www-style/2013Feb/0228.html serialization of supports_rule (forgot to edit in previous resolution) Raised By: Florian Rivoal Resolution: third resolution in http://lists.w3.org/Archives/Public/www-style/2012Aug/0749.html Fixed in https://hg.csswg.org/drafts/rev/7dace721dff3 Reply: http://lists.w3.org/Archives/Public/www-style/2013Feb/0235.html Additional clarification requested in: http://lists.w3.org/Archives/Public/www-style/2013Feb/0237.html Additional clarification added in: https://hg.csswg.org/drafts/rev/37491845e530 Additional reply: http://lists.w3.org/Archives/Public/www-style/2013Feb/0238.html Commenter agrees: http://lists.w3.org/Archives/Public/www-style/2013Feb/0244.html
Issue 9: http://lists.w3.org/Archives/Public/www-style/2013Feb/0236.html confusing to have OR in one place and AND and NOT in another Raised by: Björn Höhrmann Resolution: Assumed editorial Fixed in https://hg.csswg.org/drafts/rev/139db90ee7b2 Reply: http://lists.w3.org/Archives/Public/www-style/2013Feb/0239.html Commenter agrees: http://www.w3.org/mid/0ln8h81t117a49bc0queqm89o2fo4g65n7@hive.bjoern.hoehrmann.de