in reply to
Re^6: Regex help/ Lua parse
in thread Regex help/ Lua parse
Another book you may be interested is Perl Best Practices Standards and Styles for Developing Maintainable Code. Amongst all its other good advice, this has an entire chapter devoted to guidelines for code layout.
Be aware that this book provides guidelines; not rules. Also, as it was released in 2005, it won't make references to features added in more recent versions of Perl (perlhist provides a history of Perl releases, if you're interested).