Ticket #113: i113.2.diff

p3-payload.xml

@@ -1170 +1170 @@
 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="Accept-Language"/><iref primary="true" item="Grammar" subitem="language-range"/>
   <x:ref>Accept-Language</x:ref> = "Accept-Language" ":"
                     1#( <x:ref>language-range</x:ref> [ ";" "q" "=" <x:ref>qvalue</x:ref> ] )
-  <x:ref>language-range</x:ref>  = ( ( 1*8<x:ref>ALPHA</x:ref> *( "-" 1*8<x:ref>ALPHA</x:ref> ) ) | "*" )
+  <x:ref>language-range</x:ref>  = 
+            &lt;language-range, defined in <xref target="RFC4647" x:fmt="," x:sec="2.1"/>&gt;
 </artwork></figure>
 <t>
-   Each language-range &MAY; be given an associated quality value which
+   Each language-range can be given an associated quality value which
    represents an estimate of the user's preference for the languages
    specified by that range. The quality value defaults to "q=1". For
    example,
@@ -1183 +1184 @@
 </artwork></figure>
 <t>
    would mean: "I prefer Danish, but will accept British English and
-   other types of English." A language-range matches a language-tag if
-   it exactly equals the tag, or if it exactly equals a prefix of the
-   tag such that the first tag character following the prefix is "-".
+   other types of English."
+</t>
+<t>
+   For matching, the "Basic Filtering" matching scheme, defined in
+   <xref target="RFC4647" x:sec="3.3.1" x:fmt="of"/>, is used:
+</t>
+<x:blockquote cite="http://tools.ietf.org/html/rfc4647#section-3.3.1">
+  <t>
+     A language range matches a
+     particular language tag if, in a case-insensitive comparison, it
+     exactly equals the tag, or if it exactly equals a prefix of the tag
+     such that the first character following the prefix is "-".
+  </t>
+</x:blockquote> 
+<t>
    The special range "*", if present in the Accept-Language field,
    matches every tag not matched by any other range present in the
    Accept-Language field.
@@ -2025 +2038 @@
   <seriesInfo name="RFC" value="2119"/>
 </reference>
 
+<reference anchor='RFC4647'>
+  <front>
+    <title>Matching of Language Tags</title>
+    <author initials='A.' surname='Phillips' fullname='Addison Phillips' role="editor">
+      <organization>Yahoo! Inc.</organization>
+      <address><email>addison@inter-locale.com</email></address>
+    </author>
+    <author initials='M.' surname='Davis' fullname='Mark Davis' role="editor">
+      <organization>Google</organization>
+      <address><email>mark.davis@macchiato.com</email></address>
+    </author>
+    <date year='2006' month='September' />
+  </front>
+  <seriesInfo name='BCP' value='47' />
+  <seriesInfo name='RFC' value='4647' />
+</reference>
+
 </references>
 
 <references title="Informative References">
@@ -2652 +2682 @@
       "Quoting Charsets"
     </t>
     <t>
+      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/113"/>:
+      "language tag matching (Accept-Language) vs RFC4647"
+    </t>
+    <t>
       <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/121"/>:
       "RFC 1806 has been replaced by RFC2183"
     </t>