[e] (0) cleanup of the lang='' processing for clarity.

Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=9263 git-svn-id: http://svn.whatwg.org/webapps@4943 340c8d12-0b0e-0410-8428-c7bf67bfef74
whatwg · Apr 2, 2010 · 220494a · 220494a
1 parent 275afc0
commit 220494a
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Showing 3 changed files with 48 additions and 33 deletions.
diff --git a/complete.html b/complete.html
@@ -8906,7 +8906,8 @@ <h5 id=the-lang-and-xml:lang-attributes><span class=secno>3.2.3.3 </span>The <co
   if the node is an element) that has a <a href=#attr-xml-lang title=attr-xml-lang><code title="">lang</code> attribute in the
   <span>XML namespace</span></a> set or is an <a href=#html-elements title="HTML
   elements">HTML element</a> and has a <code title=attr-lang><a href=#attr-lang>lang</a></code> in no namespace attribute set. That
-  attribute specifies the language of the node.</p>
+  attribute specifies the language of the node (regardless of its
+  value).</p>
 
   <p>If both the <code title=attr-lang><a href=#attr-lang>lang</a></code> attribute in no
   namespace and the <a href=#attr-xml-lang title=attr-xml-lang><code title="">lang</code> attribute in the <span>XML
@@ -8916,17 +8917,16 @@ <h5 id=the-lang-and-xml:lang-attributes><span class=secno>3.2.3.3 </span>The <co
   <a href=#ignore title=ignore>ignored</a> for the purposes of determining
   the element's language.</p>
 
-  <p>If no explicit language is given for any ancestors of the node,
-  including the <a href=#root-element>root element</a>, but there is a
+  <p>If none of the node's ancestors, including the <a href=#root-element>root
+  element</a>, have either attribute set, but there is a
   <a href=#pragma-set-default-language>pragma-set default language</a> set, then that is the
-  language of the node.</p>
-
-  <p>If there is no <a href=#pragma-set-default-language>pragma-set default language</a>, then
-  language information from a higher-level protocol (such as HTTP), if
-  any, must be used as the final fallback language. In the absence of
-  any language information, and in cases where the higher-level
-  protocol reports multiple languages, the language of the node is
-  unknown (the empty string).</p>
+  language of the node. If there is no <a href=#pragma-set-default-language>pragma-set default
+  language</a> set, then language information from a higher-level
+  protocol (such as HTTP), if any, must be used as the final fallback
+  language instead. In the absence of any such language information,
+  and in cases where the higher-level protocol reports multiple
+  languages, the language of the node is unknown, and the
+  corresponding language code is the empty string.</p>
 
   <p>If the resulting value is not a recognized language code, then it
   must be treated as an unknown language having the given language
@@ -8943,6 +8943,10 @@ <h5 id=the-lang-and-xml:lang-attributes><span class=secno>3.2.3.3 </span>The <co
   "xyzzy", even if it knew it was invalid, just in case the screen
   reader actually supported a language with that code after all.</p>
 
+  <p>If the resulting value is the empty string, then it must be
+  interpreted as meaning that the language of the node is explicitly
+  unknown.</p>
+
   <hr><p>User agents may use the element's language to determine proper
   processing or rendering (e.g. in the selection of appropriate
   fonts or pronunciations, or for dictionary selection). <!--User
@@ -8957,6 +8961,7 @@ <h5 id=the-lang-and-xml:lang-attributes><span class=secno>3.2.3.3 </span>The <co
   </div>
 
 
+
   <h5 id=the-xml:base-attribute-(xml-only)><span class=secno>3.2.3.4 </span>The <dfn title=attr-xml-base><code>xml:base</code></dfn>
   attribute (XML only)</h5>
 

diff --git a/index b/index
@@ -8804,7 +8804,8 @@ Transport Protocol"&gt;HTTP&lt;/abbr&gt; today.&lt;/p&gt;</pre>
   if the node is an element) that has a <a href=#attr-xml-lang title=attr-xml-lang><code title="">lang</code> attribute in the
   <span>XML namespace</span></a> set or is an <a href=#html-elements title="HTML
   elements">HTML element</a> and has a <code title=attr-lang><a href=#attr-lang>lang</a></code> in no namespace attribute set. That
-  attribute specifies the language of the node.</p>
+  attribute specifies the language of the node (regardless of its
+  value).</p>
 
   <p>If both the <code title=attr-lang><a href=#attr-lang>lang</a></code> attribute in no
   namespace and the <a href=#attr-xml-lang title=attr-xml-lang><code title="">lang</code> attribute in the <span>XML
@@ -8814,17 +8815,16 @@ Transport Protocol"&gt;HTTP&lt;/abbr&gt; today.&lt;/p&gt;</pre>
   <a href=#ignore title=ignore>ignored</a> for the purposes of determining
   the element's language.</p>
 
-  <p>If no explicit language is given for any ancestors of the node,
-  including the <a href=#root-element>root element</a>, but there is a
+  <p>If none of the node's ancestors, including the <a href=#root-element>root
+  element</a>, have either attribute set, but there is a
   <a href=#pragma-set-default-language>pragma-set default language</a> set, then that is the
-  language of the node.</p>
-
-  <p>If there is no <a href=#pragma-set-default-language>pragma-set default language</a>, then
-  language information from a higher-level protocol (such as HTTP), if
-  any, must be used as the final fallback language. In the absence of
-  any language information, and in cases where the higher-level
-  protocol reports multiple languages, the language of the node is
-  unknown (the empty string).</p>
+  language of the node. If there is no <a href=#pragma-set-default-language>pragma-set default
+  language</a> set, then language information from a higher-level
+  protocol (such as HTTP), if any, must be used as the final fallback
+  language instead. In the absence of any such language information,
+  and in cases where the higher-level protocol reports multiple
+  languages, the language of the node is unknown, and the
+  corresponding language code is the empty string.</p>
 
   <p>If the resulting value is not a recognized language code, then it
   must be treated as an unknown language having the given language
@@ -8841,6 +8841,10 @@ Transport Protocol"&gt;HTTP&lt;/abbr&gt; today.&lt;/p&gt;</pre>
   "xyzzy", even if it knew it was invalid, just in case the screen
   reader actually supported a language with that code after all.</p>
 
+  <p>If the resulting value is the empty string, then it must be
+  interpreted as meaning that the language of the node is explicitly
+  unknown.</p>
+
   <hr><p>User agents may use the element's language to determine proper
   processing or rendering (e.g. in the selection of appropriate
   fonts or pronunciations, or for dictionary selection). <!--User
@@ -8855,6 +8859,7 @@ Transport Protocol"&gt;HTTP&lt;/abbr&gt; today.&lt;/p&gt;</pre>
   </div>
 
 
+
   <h5 id=the-xml:base-attribute-(xml-only)><span class=secno>3.2.3.4 </span>The <dfn title=attr-xml-base><code>xml:base</code></dfn>
   attribute (XML only)</h5>
 

diff --git a/source b/source
@@ -8889,7 +8889,8 @@ Transport Protocol">HTTP&lt;/abbr> today.&lt;/p></pre>
   <span>XML namespace</span></span> set or is an <span title="HTML
   elements">HTML element</span> and has a <code
   title="attr-lang">lang</code> in no namespace attribute set. That
-  attribute specifies the language of the node.</p>
+  attribute specifies the language of the node (regardless of its
+  value).</p>
 
   <p>If both the <code title="attr-lang">lang</code> attribute in no
   namespace and the <span title="attr-xml-lang"><code
@@ -8901,17 +8902,16 @@ Transport Protocol">HTTP&lt;/abbr> today.&lt;/p></pre>
   <span title="ignore">ignored</span> for the purposes of determining
   the element's language.</p>
 
-  <p>If no explicit language is given for any ancestors of the node,
-  including the <span>root element</span>, but there is a
+  <p>If none of the node's ancestors, including the <span>root
+  element</span>, have either attribute set, but there is a
   <span>pragma-set default language</span> set, then that is the
-  language of the node.</p>
-
-  <p>If there is no <span>pragma-set default language</span>, then
-  language information from a higher-level protocol (such as HTTP), if
-  any, must be used as the final fallback language. In the absence of
-  any language information, and in cases where the higher-level
-  protocol reports multiple languages, the language of the node is
-  unknown (the empty string).</p>
+  language of the node. If there is no <span>pragma-set default
+  language</span> set, then language information from a higher-level
+  protocol (such as HTTP), if any, must be used as the final fallback
+  language instead. In the absence of any such language information,
+  and in cases where the higher-level protocol reports multiple
+  languages, the language of the node is unknown, and the
+  corresponding language code is the empty string.</p>
 
   <p>If the resulting value is not a recognized language code, then it
   must be treated as an unknown language having the given language
@@ -8930,6 +8930,10 @@ Transport Protocol">HTTP&lt;/abbr> today.&lt;/p></pre>
   "xyzzy", even if it knew it was invalid, just in case the screen
   reader actually supported a language with that code after all.</p>
 
+  <p>If the resulting value is the empty string, then it must be
+  interpreted as meaning that the language of the node is explicitly
+  unknown.</p>
+
   <hr>
 
   <p>User agents may use the element's language to determine proper
@@ -8948,6 +8952,7 @@ Transport Protocol">HTTP&lt;/abbr> today.&lt;/p></pre>
   </div>
 
 
+
   <h5>The <dfn title="attr-xml-base"><code>xml:base</code></dfn>
   attribute (XML only)</h5>