[css3-fonts] fabulous fickle font fetching

Author: John Daggett

css-fonts/Fonts.html

@@ -115,15 +115,15 @@
 
    <h1>CSS Fonts Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=editors-draft-16-august-2013>Editor's Draft
-    16 August 2013</h2>
+   <h2 class="no-num no-toc" id=editors-draft-19-august-2013>Editor's Draft
+    19 August 2013</h2>
 
    <dl id=authors>
     <dt>This version:
 
     <dd><a
      href="http://dev.w3.org/csswg/css-fonts/">http://dev.w3.org/csswg/css-fonts/</a>
-     <!-- <dd><a href="http://www.w3.org/TR/2013/ED-css-fonts-3-20130816/">http://www.w3.org/TR/2013/ED-css-fonts-3-20130816/</a>  -->
+     <!-- <dd><a href="http://www.w3.org/TR/2013/ED-css-fonts-3-20130819/">http://www.w3.org/TR/2013/ED-css-fonts-3-20130819/</a>  -->
 
 
     <dt>Latest version:
@@ -3041,6 +3041,35 @@ <h3 id=font-fetching-requirements><span class=secno>4.9 </span>Font
    href="http://www.w3.org/TR/html5/infrastructure.html#cors-enabled-fetch">potentially
    CORS-enabled fetch</a> method, is defined or required.
 
+  <div class=example> For the examples given below, assume that a document is
+   located at <code>http://example.com/page.html</code> and all URL's link to
+   valid font resources supported by the user agent. Fonts defined with the
+   ‘<a href="#descdef-src"><code class=property>src</code></a>’
+   descriptor values below will be loaded:
+   <pre>/* same origin (i.e. domain, scheme, port match document) */
+src: url(fonts/simple.woff);
+src: url(//fonts/simple.woff);
+
+/* data url's with no redirects are treated as same origin */
+src: url("data:application/font-woff;base64,...");
+
+/* cross origin, different domain */
+/* Access-Control-Allow-Origin response header set to '*' */
+src: url(http://another.example.com/fonts/simple.woff);
+</pre>
+   Fonts defined with the ‘<a href="#descdef-src"><code
+   class=property>src</code></a>’ descriptor values below will fail to
+   load:
+   <pre>/* cross origin, different scheme */
+/* no Access-Control-xxx headers in response */
+src: url(https://example.com/fonts/simple.woff);
+
+/* cross origin, different domain */
+/* no Access-Control-xxx headers in response */
+src: url(http://another.example.com/fonts/simple.woff);
+</pre>
+  </div>
+
   <h2 id=font-matching-algorithm><span class=secno>5 </span>Font Matching
    Algorithm</h2>
 
@@ -5876,6 +5905,8 @@ <h3 class=no-num id=recent-changes> Changes from the <a
 
    <li>switched examples to use .woff files
 
+   <li>revised wording of font fetching algorithm
+
    <li>minor editorial cleanups
   </ul>