--- /dev/null
+[[!comment format=mdwn
+ username="amcalvo"
+ ip="78.53.114.169"
+ subject="comment 4"
+ date="2014-05-05T21:56:36Z"
+ content="""
+A correction to the above comment, one needs activate multiple replacements:
+
+~~~
+ sub_filter 'http://example.com' 'https://example.com';
+ sub_filter_once off;
+~~~
+"""]]