spec/Overview.html 1.1650 2479 Update guidance on writing alt='' text f

Update guidance on writing alt='' text for markup generators to handle
image links. (whatwg r2479)

4.8.2.1.13 Guidance for markup generators
http://people.w3.org/mike/diffs/html5/spec/Overview.1.1650.html#guidance-for-markup-generators
4.8.3 The iframe element
http://people.w3.org/mike/diffs/html5/spec/Overview.1.1650.html#the-iframe-element

http://people.w3.org/mike/diffs/html5/spec/Overview.diff.html
http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.1649&r2=1.1650&f=h
http://html5.org/tools/web-apps-tracker?from=2478&to=2479

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RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.1649
retrieving revision 1.1650
diff -u -d -r1.1649 -r1.1650
--- Overview.html 29 Nov 2008 22:57:18 -0000 1.1649
+++ Overview.html 29 Nov 2008 23:00:22 -0000 1.1650
@@ -12476,13 +12476,16 @@
   start for writing the alternative text.<h6 id=guidance-for-markup-generators><span class=secno>4.8.2.1.13 </span>Guidance for markup generators</h6><p>Markup generators (such as WYSIWYG authoring tools) should,
   wherever possible, obtain alternative text from their
   users. However, it is recognised that in many cases, this will not
-  be possible.<p>As a last resort, implementors should either set the <code title=attr-img-alt><a href=#attr-img-alt>alt</a></code> attribute to the empty string, under
+  be possible.<p>For images that are the sole contents of links, markup generators
+  should examine the link target to determine the title of the target,
+  or the URL of the target, and use information obtained in this
+  manner as the alternative text.<p>As a last resort, implementors should either set the <code title=attr-img-alt><a href=#attr-img-alt>alt</a></code> attribute to the empty string, under
   the assumption that the image is a purely decorative image that
   doesn't add any information but is still specific to the surrounding
   content, or omit the <code title=attr-img-alt><a href=#attr-img-alt>alt</a></code> attribute
   altogther, under the assumption that the image is a key part of the
-  content.<p>Markup generators should generally avoid using the image's file
-  name as the alternative text.<h4 id=the-iframe-element><span class=secno>4.8.3 </span>The <dfn><code>iframe</code></dfn> element</h4><dl class=element><dt>Categories</dt>
+  content.<p>Markup generators should generally avoid using the image's own
+  file name as the alternative text.<h4 id=the-iframe-element><span class=secno>4.8.3 </span>The <dfn><code>iframe</code></dfn> element</h4><dl class=element><dt>Categories</dt>
    <dd><a href=#embedded-content-1>Embedded content</a>.</dd>
    <dt>Contexts in which this element may be used:</dt>
    <dd>Where <a href=#embedded-content-1>embedded content</a> is expected.</dd>

Received on Saturday, 29 November 2008 23:03:55 UTC