Allow custom prefix for Browser Search entries

Prior to this, the prefix for OpenSearch entries generated by
browser_search_plugin.php was hardcoded to 'MantisBT'.

This defines a new '$g_search_title' config option (which defaults to
the value of $g_window_title) to be used as prefix, allowing
- administrators to customize the name of their browser search entries
- users to have distinct search engines for multiple MantisBT instances

$g_search_title should be shorter than 8 chars to be compliant with the
maximum size of 16 chars for the ShortName element as per OpenSearch
specification [1]

Fixes #11964

[1] http://www.opensearch.org/Specifications/OpenSearch/1.1

browser_search_plugin.php

@@ -37,16 +37,17 @@
 $f_type = gpc_get_string( 'type', 'text' );
 
 $t_path = config_get_global( 'path' );
+$t_title = config_get_global( 'search_title' );
 $t_icon = $t_path . config_get_global( 'favicon_image' );
 $t_searchform = $t_path . 'view_all_bug_page.php';
 
 if( strtolower( $f_type ) == 'id' ) {
-	$t_shortname = 'MantisBT IssueId';
-	$t_description = 'MantisBT Issue Id Search';
+	$t_shortname = $t_title . ' IssueId';
+	$t_description = $t_title .' Issue Id Search';
 	$t_url = $t_path . 'view.php?id={searchTerms}';
 } else {
-	$t_shortname = 'MantisBT Search';
-	$t_description = 'MantisBT Text Search';
+	$t_shortname = $t_title . ' Search';
+	$t_description = $t_title . ' Text Search';
 	$t_url = $t_path . 'view_all_set.php?type=1&temporary=y&handler_id=[all]&search={searchTerms}';
 }
 

config_defaults_inc.php

@@ -850,6 +850,18 @@
  */
 $g_window_title = 'MantisBT';
 
+/**
+ * OpenSearch ShortName prefix.
+ * This is used to describe Browser Search entries, and must be 8 chars or
+ * less to be compliant with the OpenSearch specification (since we append up to
+ * 8 chars to differentiate text- and id-based searches, and the maximum length
+ * of the ShortName element is 16 chars).
+ * @link http://www.opensearch.org/Specifications/OpenSearch/1.1
+ * @see $g_window_title
+ * @global string $g_search_title
+ */
+$g_search_title = '%window_title%';
+
 /**
  * Check for admin directory, database upgrades, etc.
  * @global integer $g_admin_checks

docbook/Admin_Guide/en-US/config/display.xml

@@ -9,11 +9,25 @@
 		<varlistentry>
 			<term>$g_window_title</term>
 			<listitem>
-				<para>This is the browser window title (&lt;TITLE&gt;
-					tag).
+				<para>This is the browser window title (&lt;TITLE&gt; tag).
 				</para>
 			</listitem>
 		</varlistentry>
+		<varlistentry>
+			<term>$g_search_title</term>
+			<listitem>
+				<para>This is used as prefix for Browser Search entries,
+					and must be 8 chars or less to be compliant with the
+					<ulink url="http://www.opensearch.org/Specifications/OpenSearch/1.1">
+						OpenSearch specification
+					</ulink>
+					(since we append up to 8 chars to differentiate text- and
+					id-based searches, and the maximum length of the
+					<emphasis>ShortName </emphasis> element is 16 chars).
+				</para>
+				<para>Defaults to the value of $g_window_title.</para>
+			</listitem>
+		</varlistentry>
 		<varlistentry>
 			<term>$g_favicon_image</term>
 			<listitem>