exclude page parts from indexing using a regex

conf/default.php

@@ -53,4 +53,5 @@ $conf['logging'] = 0;
 $conf['restrict'] = '';
 $conf['skipRegex'] = ':(playground|sandbox)(:|$)';
 $conf['matchRegex'] = '';
+$conf['ignoreRegex'] = '';
 $conf['preferUIlanguage'] = 0;

conf/metadata.php

@@ -60,6 +60,7 @@ $meta['logging'] = array('onoff');
 $meta['restrict'] = array('string');
 $meta['skipRegex'] = array('string');
 $meta['matchRegex'] = array('string');
+$meta['ignoreRegex'] = array('string');
 $meta['preferUIlanguage'] = array('multichoice', '_choices' => array(
     \dokuwiki\plugin\aichat\AIChat::LANG_AUTO_ALL,
     \dokuwiki\plugin\aichat\AIChat::LANG_UI_ALL,

lang/en/settings.php

@@ -45,6 +45,7 @@ $lang['logging'] = 'Log all questions and answers. Use the <a href="?do=admin&pa
 $lang['restrict'] = 'Restrict access to these users and groups (comma separated). Leave empty to allow all users.';
 $lang['skipRegex'] = 'Skip indexing pages matching this regular expression (no delimiters).';
 $lang['matchRegex'] = 'Only index pages matching this regular expression (no delimiters).';
+$lang['ignoreRegex'] = 'Ignore parts of the page content matching this regular expression (no delimiters).';
 $lang['preferUIlanguage'] = 'How to work with multilingual wikis? (Requires the translation plugin)';
 
 $lang['preferUIlanguage_o_0'] = 'Guess language, use all sources';

renderer.php

@@ -87,6 +87,12 @@ class renderer_plugin_aichat extends Doku_Renderer_xhtml
     {
         $this->doc = preg_replace("/(\r?\n){3,}/", "\n\n", $this->doc);
         $this->doc = ltrim($this->doc); // remove leading space and empty lines
+
+        // remove ignored parts
+        $regex = $this->getConf('ignoreRegex');
+        if($regex) {
+            $this->doc = preg_replace('/' . $regex . '/i', '', $this->doc);
+        }
     }
 
     /** @inheritdoc */