- Patch #546302 by jhodgdon: improved help text of search module so people know how they can pimp their search.

modules/search/search.module

@@ -97,6 +97,7 @@ function search_help($path, $arg) {
   switch ($path) {
     case 'admin/help#search':
       $output = '<p>' . t('The search module adds the ability to search for content by keywords. Search is often the only practical way to find content on a large site, and is useful for finding both users and posts.') . '</p>';
+      $output = '<p>' . t('It is important to note that by default, the search module only supports exact keyword matching. You can modify this behavior by installing a language-specific stemming module for your language, which allows words such as walk, walking, and walked all to match each other. Another approach is to install an n-gram module, which breaks words down into small, overlapping chunks and finds words with a high degree of overlap, so that words like earthquake and quake can match each other. A third approach is to use a third-party search technology with features like this built in; there are modules available for several of these, such as Apache Solr and Sphinx.') . '</p>';
       $output .= '<p>' . t('To provide keyword searching, the search engine maintains an index of words found in your site\'s content. To build and maintain this index, a correctly configured <a href="@cron">cron maintenance task</a> is required. Indexing behavior can be adjusted using the <a href="@searchsettings">search settings page</a>; for example, the <em>Number of items to index per cron run</em> sets the maximum number of items indexed in each pass of a <a href="@cron">cron maintenance task</a>. If necessary, reduce this number to prevent timeouts and memory errors when indexing.', array('@cron' => url('admin/reports/status'), '@searchsettings' => url('admin/config/search/settings'))) . '</p>';
       $output .= '<p>' . t('For more information, see the online handbook entry for <a href="@search">Search module</a>.', array('@search' => 'http://drupal.org/handbook/modules/search/')) . '</p>';
       return $output;