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<title>[13888] trunk/wp-content/themes/twentyten/functions.php:
Clarify order of operations for a child theme removing a filter of a parent theme
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<div id="msg">
<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/13888">13888</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2010-03-30 12:55:08 +0000 (Tue, 30 Mar 2010)</dd>
</dl>
<h3>Log Message</h3>
<pre>Clarify order of operations for a child theme removing a filter of a parent theme. see <a href="http://trac.wordpress.org/ticket/12695">#12695</a>, see <a href="http://trac.wordpress.org/ticket/12748">#12748</a></pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpcontentthemestwentytenfunctionsphp">trunk/wp-content/themes/twentyten/functions.php</a></li>
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<h3>Diff</h3>
<a id="trunkwpcontentthemestwentytenfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-content/themes/twentyten/functions.php (13887 => 13888)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-content/themes/twentyten/functions.php 2010-03-30 10:22:30 UTC (rev 13887)
+++ trunk/wp-content/themes/twentyten/functions.php 2010-03-30 12:55:08 UTC (rev 13888)
</span><span class="lines">@@ -17,13 +17,20 @@
</span><span class="cx"> *
</span><span class="cx"> * Functions that are not pluggable (not wrapped in function_exists()) are instead attached
</span><span class="cx"> * to a filter or action hook. The hook can be removed by using remove_action() or
</span><del>- * remove_filter() and you can attach your own function to the hook. For example:
</del><ins>+ * remove_filter() and you can attach your own function to the hook.
</ins><span class="cx"> *
</span><ins>+ * In this example, since both hooks are attached using the default priority (10), the first
+ * one attached (which would be the child theme) will run. We can remove the parent theme's
+ * hook only after it is attached, which means we need to wait until setting up the child theme:
+ *
</ins><span class="cx"> * <code>
</span><del>- * remove_action( 'after_setup_theme', 'twentyten_setup' );
</del><span class="cx"> * add_action( 'after_setup_theme', 'my_child_theme_setup' );
</span><span class="cx"> * function my_child_theme_setup() {
</span><del>- * ...
</del><ins>+ * // We are replacing twentyten_setup() with my_child_theme_setup()
+ * remove_action( 'after_setup_theme', 'twentyten_setup' );
+ * // We are providing our own filter for excerpt_length (or using the unfiltered value)
+ * remove_filter( 'excerpt_length', 'twentyten_excerpt_length' );
+ * ...
</ins><span class="cx"> * }
</span><span class="cx"> * </code>
</span><span class="cx"> *
</span></span></pre>
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