change fill-rule default for path() in SVG shapes

Author: astearns

css-shapes-1/Overview.bs

@@ -488,7 +488,7 @@ Supported Shapes</h3>
 		<dt><dfn>polygon()</dfn>
 		<dd>
 			* The <<'fill-rule'>> specifies the filling rule used
-				to determine the interior
+				to determine the interior.
 				Defaults to ''nonzero'' if omitted.
 
 			* An optional <<length>> after a <css>round</css> keyword 
@@ -537,8 +537,13 @@ Supported Shapes</h3>
 		<dt><dfn>path()</dfn>
 		<dd dfn-type=value dfn-for="path()">
 			* The <<'fill-rule'>> specifies the filling rule used
-				to determine the interior
-				Defaults to ''nonzero'' if omitted.
+				to determine the interior.
+				Defaults to ''nonzero'' if omitted,
+				unless the function is being used 
+				in a context such as SVG shapes 
+				where the 'fill-rule' property is relevant. 
+				In that case an omitted value will use 
+				the computed value of the 'fill-rule' property.
 
 			* The <<string>> represents an
 				<a href="https://www.w3.org/TR/SVG11/paths.html#PathData">SVG Path data string</a>.
@@ -1176,6 +1181,7 @@ Change Log</h2>
 		<li>Added vertex rounding for polygon() for <a href="https://github.com/w3c/csswg-drafts/issues/9843">issue #9843</a> </li>
 		<li>Updated shape-outside prose to include all <<basic-shape>>s for <a href="https://github.com/w3c/csswg-drafts/issues/9728">issue #9728</a> </li>
 		<li>Clarified the shape-margin contribution to float areas for <a href="https://github.com/w3c/csswg-drafts/issues/2949">issue #2949</a> </li>
+		<li>Added fill-rule default handling for SVG shapes from <a href="https://github.com/w3c/csswg-drafts/issues/3468">issue #3468</a> </li>
 	</ul>
 
 <h3 class="no-num" id="20140320">