Note issue about parentheses and @supports.

Author: dbaron

css3-conditional/Overview.html

@@ -591,6 +591,16 @@ <h2 id=at-supports><span class=secno>6. </span>Feature queries: the
    not</strong> use such a rule and processors <strong>must</strong> ignore
    such a rule.
 
+  <p class=issue>The grammar above attempted to prevent nesting of extra
+   parentheses; however, discussion in the working group has led to the
+   conclusion that this was a bad idea, and therefore it should be changed to
+   allow arbitrary nesting of extra parentheses (which, for example, makes it
+   easier to comment things out). There was also discussion of allowing the
+   toplevel parentheses around a declaration to be omitted, though opinion
+   tended towards thinking this was a bad idea. See <a
+   href="http://lists.w3.org/Archives/Public/www-style/2011Aug/thread.html#msg247">thread</a>
+   on www-style.
+
   <p class=note>Note that this means that declarations that meet the
    forward-compatible syntax for declarations are permitted (and support for
    them is then tested by the &lsquo;<code class=css>@supports</code>&rsquo;
@@ -1158,10 +1168,11 @@ <h2 class=no-num id=grammar>Grammar</h2>
 
   <h2 class=no-num id=acknowledgments>Acknowledgments</h2>
 
-  <p> Thanks to the ideas and feedback from <span lang=tr>Tantek
-   Çelik</span>, Elika Etemad, Pascal Germroth, <span lang=de>Björn
-   Höhrmann</span>, Paul Irish, Alex Mogilevsky, Chris Moschini, Ben Ward,
-   Zack Weinberg, Boris Zbarsky, and all the rest of the <a
+  <p> Thanks to the ideas and feedback from Tab Atkins, <span lang=tr>Tantek
+   Çelik</span>, Alex Danilo, Elika Etemad, Pascal Germroth, <span
+   lang=de>Björn Höhrmann</span>, Paul Irish, Vitor Menezes, Alex
+   Mogilevsky, Chris Moschini, Ben Ward, Zack Weinberg, Boris Zbarsky, and
+   all the rest of the <a
    href="http://lists.w3.org/Archives/Public/www-style/">www-style</a>
    community.
 

css3-conditional/Overview.src.html

@@ -400,6 +400,16 @@ <h2 id="at-supports">Feature queries: the '@supports' rule</h2>
 above is invalid.  Style sheets <strong>must not</strong> use such a
 rule and processors <strong>must</strong> ignore such a rule.</p>
 
+<p class="issue">The grammar above attempted to prevent nesting of extra
+parentheses; however, discussion in the working group has led to the
+conclusion that this was a bad idea, and therefore it should be changed
+to allow arbitrary nesting of extra parentheses (which, for example,
+makes it easier to comment things out).  There was also discussion of
+allowing the toplevel parentheses around a declaration to be omitted,
+though opinion tended towards thinking this was a bad idea.  See
+<a href="http://lists.w3.org/Archives/Public/www-style/2011Aug/thread.html#msg247">thread</a>
+on www-style.</p>
+
 <p class="note">Note that this means that declarations that meet the
 forward-compatible syntax for declarations are permitted (and support
 for them is then tested by the ''@supports'' rule), but declarations
@@ -903,11 +913,14 @@ <h2 class=no-num id=acknowledgments>Acknowledgments</h2>
 
 <p>
 Thanks to the ideas and feedback from
+Tab Atkins,
 <span lang="tr">Tantek Çelik</span>,
+Alex Danilo,
 Elika Etemad,
 Pascal Germroth,
 <span lang="de">Björn Höhrmann</span>,
 Paul Irish,
+Vitor Menezes,
 Alex Mogilevsky,
 Chris Moschini,
 Ben Ward,