add possibility to view config values, including description, default value and whether it is an adjusted config value in the ui

1 files changed, 24 insertions, 0 deletions

diff --git a/core/Twig.php b/core/Twig.php
index 06706d7b44..5968b965eb 100755
--- a/core/Twig.php
+++ b/core/Twig.php
@@ -104,6 +104,8 @@ class Twig
         $this->twig->addTokenParser(new RenderTokenParser());
 
         $this->addTest_false();
+        $this->addTest_true();
+        $this->addTest_emptyString();
     }
 
     private function addTest_false()
@@ -117,6 +119,28 @@ class Twig
         $this->twig->addTest($test);
     }
 
+    private function addTest_true()
+    {
+        $test = new Twig_SimpleTest(
+            'true',
+            function ($value) {
+                return true === $value;
+            }
+        );
+        $this->twig->addTest($test);
+    }
+
+    private function addTest_emptyString()
+    {
+        $test = new Twig_SimpleTest(
+            'emptyString',
+            function ($value) {
+                return '' === $value;
+            }
+        );
+        $this->twig->addTest($test);
+    }
+
     protected function addFunction_getJavascriptTranslations()
     {
         $getJavascriptTranslations = new Twig_SimpleFunction(