--- /dev/null
+--TEST--
+"autoescape" tag handles filters preserving the safety
+--TEMPLATE--
+{% autoescape 'html' %}
+
+(preserves_safety is preserving safety for "html")
+
+1. Unsafe values are still unsafe
+( var|preserves_safety|escape )
+{{ var|preserves_safety }}
+
+2. Safe values are still safe
+( var|escape|preserves_safety )
+{{ var|escape|preserves_safety }}
+
+3. Re-escape values that are escaped for an other contexts
+( var|escape_something|preserves_safety|escape )
+{{ var|escape_something|preserves_safety }}
+
+4. Still escape when using filters not declared safe
+( var|escape|preserves_safety|replace({'FABIEN': 'FABPOT'})|escape )
+{{ var|escape|preserves_safety|replace({'FABIEN': 'FABPOT'}) }}
+
+{% endautoescape %}
+--DATA--
+return array('var' => "<Fabien>\nTwig")
+--EXPECT--
+
+(preserves_safety is preserving safety for "html")
+
+1. Unsafe values are still unsafe
+( var|preserves_safety|escape )
+<FABIEN>
+TWIG
+
+2. Safe values are still safe
+( var|escape|preserves_safety )
+<FABIEN>
+TWIG
+
+3. Re-escape values that are escaped for an other contexts
+( var|escape_something|preserves_safety|escape )
+<FABIEN>
+TWIG
+
+4. Still escape when using filters not declared safe
+( var|escape|preserves_safety|replace({'FABIEN': 'FABPOT'})|escape )
+&LT;FABPOT&GT;
+TWIG
+