Which of the user options controls it? This would be good to know when posting some code samples. For instance the syntax for taking a code ref in Perl is \\&foo, and someone just pasting from existing code might not notice that the \\ went away.
Ooh, speaking of user options. Perhaps each user option should have a link to a post explaing the feature? That way someone who wonders WTF they are can readily figure it out...
Cheers,
Ben