Start recording.

syntax.php

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+<?php
+/**
+ * HTML Comment Plugin: allows HTML comments to be retained in the output
+ *
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Christopher Arndt <chris@chrisarndt.de>
+ */
+
+if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/');
+if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
+require_once(DOKU_PLUGIN.'syntax.php');
+
+define('HTMLCOMMENT_SAFE', true);
+
+/**
+ * All DokuWiki plugins to extend the parser/rendering mechanism
+ * need to inherit from this class
+ */
+class syntax_plugin_htmlcomment extends DokuWiki_Syntax_Plugin {
+
+    /**
+     * return some info
+     */
+    function getInfo(){
+        return array(
+            'author' => 'Christopher Arndt',
+            'email'  => 'chris@chrisarndt.de',
+            'date'   => '2005-10-08',
+            'name'   => 'HTML Comment Plugin',
+            'desc'   => 'allows HTML comments to be retained in the output',
+            'url'    => 'http://wiki.splitbrain.org/plugin:html_comment',
+        );
+    }
+
+    function getType() {
+        return 'substition';
+    }
+
+    function getSort() {
+        return 325;
+    }
+
+    function connectTo($mode) {
+        $this->Lexer->addSpecialPattern("<\!--.*?-->", $mode,
+          'plugin_htmlcomment');
+    }
+
+    function handle($match, $state, $pos, &$handler) {
+        if ($state == DOKU_LEXER_SPECIAL) {
+             // strip <!-- from start and --> from end
+            $match = substr($match,4,-3);
+            return array($state, $match);
+        }
+        return array();
+    }
+
+    function render($mode, &$renderer, $data) {
+        if ($mode == 'xhtml') {
+            list($state, $match) = $data;
+            if ($state == DOKU_LEXER_SPECIAL) {
+                $renderer->doc .= '<!--';
+                if (HTMLCOMMENT_SAFE) {
+                    $renderer->doc .= $renderer->_xmlEntities($match);
+                } else {
+                    $renderer->doc .= $match;
+                }
+                $renderer->doc .= '-->';
+            }
+            return true;
+        }
+        return false;
+    }
+}
+
+?>