Code macro fails to escape "broken" Wiki syntax

Not sure if this is a feature or a bug, but just in case... The code macro fails to render the following snippet:

{{code}}
SELECT * FROM XYZ -- this will select from XYZ
{{/code}}

This outputs no result (seems to be because of the double dash). This also starts to become an issue when pasting snippets like the following:

{{code}}
int x = 5;
System.out.println(--x);
{{/code}}

This also fails to render properly when pasted into the GWT editor...