It seems that a new line is required before a fenced code block, it shouldn't be. `````` text ``` fenced code block ``` `````` http://johnmacfarlane.net/babelmark2/?text=no+need+for+new+line%0A%60%60%60%0Abefore+fenced+code+block%0A%60%60%60 Presumably this is an issue upstream?