I also have a question on how you determine what a proper function length is. From your blog post I appreciate the notion that sometimes you need to refactor. But sometimes a function is long by design. For example, in a function I tested I get 78 lines of code. But if you don't count commented lines or my lines of Write-Verbose (or someone might use Write-Debug), then I'd get a line count of 60 which your analyzer would report as "better". For that matter if don't count white space, my function gets down to 46 lines of actual code that does something.

I completely understand where you are going with this metric but I'm trying to figure out how it is being determined and if that is the "best" way.