Last call document: http://www.w3.org/TR/2013/WD-css-variables-1-20130620/
Editor's draft: http://dev.w3.org/csswg/css-variables-1/
The following color coding convention is used for comments:
Open issues are marked like this
An issue can be closed as Accepted, OutOfScope,
Invalid, Rejected, or Retracted.
Verified indicates commentor's acceptance of the response.
Issue 1. # Summary: Animating a custom property used as an 'animation-name' value introduces circular dependencies. From: Tab Atkins Comment: http://lists.w3.org/Archives/Public/www-style/2013Jun/0173.html Response: http://lists.w3.org/Archives/Public/www-style/2013Jun/0436.html Closed: Accepted
Issue 2. # Summary: How should custom properties treat the CSS-wide keywords? From: Tab Atkins Comment: http://lists.w3.org/Archives/Public/www-style/2013Jun/0173.html Response: http://lists.w3.org/Archives/Public/www-style/2013Jun/0392.html Closed: Accepted
Issue 3. # Summary: Should the 'all' property affect custom properties? From: Tab Atkins Comment: http://lists.w3.org/Archives/Public/www-style/2013Jun/0173.html Response: http://lists.w3.org/Archives/Public/www-style/2013Jun/0392.html Closed: Accepted
Issue 4. # Summary: How is a CSSVariablesMap enumerated? From: Alan Cutter Comment: http://lists.w3.org/Archives/Public/www-style/2013Jun/0413.html Response: (moot, interface was removed) Closed: Invalid
Issue 5. # Summary: What's the syntax of the "variable-name" argument in var()? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0507.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0510.html Closed: Accepted
Issue 6. # Summary: What affect do var() functions have on @support queries? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0506.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0509.html Closed: Accepted
Issue 7. # Summary: Should BADSTRING and BADURL tokens be allowed in custom properties? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0525.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0539.html Closed: Accepted
Issue 8. # Summary: Are empty or white-space-only custom property values valid? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0520.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0540.html Closed: Accepted
Issue 9. # Summary: What is the computed value of a property that contains abutted tokens due to variable substitution? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0555.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0561.html Closed: Accepted
Issue 10. # Summary: Why aren't custom properties exposed through CSSStyleDeclaration? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0572.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0578.html Closed: Invalid
Issue 11. # Summary: The value of a longhand when var() is used on the shorthand is undefined. From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Aug/0573.html Response: http://lists.w3.org/Archives/Public/www-style/2013Aug/0644.html Closed: Accepted
Issue 12. # Summary: Undefined whether a var() with invalid syntax invalidates the property or not. From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Dec/0148.html Response: http://lists.w3.org/Archives/Public/www-style/2013Dec/0158.html Closed: Accepted
Issue 13. # Summary: Spec doesn't define what to do with a cycle of a single variable. From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Dec/0316.html Response: http://lists.w3.org/Archives/Public/www-style/2013Dec/0323.html Closed: Accepted
Issue 14. # Summary: Should cyclic var()s with non-cyclic fallbacks be invalid? From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2013Dec/0315.html Response: http://lists.w3.org/Archives/Public/www-style/2013Dec/0357.html Closed: Accepted
Issue 15. # Summary: Custom Properties should be split from Variables into a separate spec. From: Alan Stearns Comment: http://lists.w3.org/Archives/Public/www-style/2014Mar/0385.html Response: http://lists.w3.org/Archives/Public/www-style/2014Mar/0386.html Closed: Rejected Verified: http://lists.w3.org/Archives/Public/www-style/2014Apr/0224.html
Issue 16. # Summary: Custom Property names should be consistent with the names of other custom things. From: Tab Atkins Comment: http://lists.w3.org/Archives/Public/www-style/2014Mar/0261.html Response: http://lists.w3.org/Archives/Public/www-style/2014Mar/0467.html Closed: Accepted
Issue 17. # Summary: The spec should drop the CSSVariableMap interface. From: Cameron McCormack Comment: http://lists.w3.org/Archives/Public/www-style/2014Feb/0223.html Response: http://lists.w3.org/Archives/Public/www-style/2014Mar/0571.html Closed: Accepted
Issue 18. # Summary: Some people don't like the custom-property/var() syntax. From: Mark Volkmann Comment: http://lists.w3.org/Archives/Public/www-style/2014Apr/0026.html Response: http://lists.w3.org/Archives/Public/www-style/2014Apr/0034.html Closed: Rejected