From d5cccc0ce3bbe1d82670f397de83649850a32719 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Fri, 26 Jun 2015 14:58:52 +0200
Subject: [PATCH] Skip already included JavaScript files

---
 .../plugin/JsFunctionTemplatePlugin.class.php         | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/wcfsetup/install/files/lib/system/template/plugin/JsFunctionTemplatePlugin.class.php b/wcfsetup/install/files/lib/system/template/plugin/JsFunctionTemplatePlugin.class.php
index c71989c2d8..a318370a21 100644
--- a/wcfsetup/install/files/lib/system/template/plugin/JsFunctionTemplatePlugin.class.php
+++ b/wcfsetup/install/files/lib/system/template/plugin/JsFunctionTemplatePlugin.class.php
@@ -33,6 +33,12 @@ use wcf\util\StringUtil;
  * @category	Community Framework
  */
 class JsFunctionTemplatePlugin implements IFunctionTemplatePlugin {
+	/**
+	 * list of already included JavaScript files
+	 * @var	array<string>
+	 */
+	protected $includedFiles = [];
+	
 	/**
 	 * @see	\wcf\system\template\IFunctionTemplatePlugin::execute()
 	 */
@@ -66,6 +72,11 @@ class JsFunctionTemplatePlugin implements IFunctionTemplatePlugin {
 			$src .= $tagArgs['file'];
 		}
 		
+		if (in_array($src, $this->includedFiles)) {
+			return '';
+		}
+		
+		$this->includedFiles[] = $src;
 		$src .= (!ENABLE_DEBUG_MODE ? '.min' : '') . '.js?v=' . LAST_UPDATE_TIME;
 		
 		$html = '<script' . (!isset($tagArgs['core']) || $tagArgs['core'] !== 'true' ? ' data-relocate="true"' : '') . ' src="' . $src . '"></script>'."\n";
-- 
2.20.1