The only reason I go with concatenation is that it is easier to see in my text editor which color codes everything. Everything between "" and '' is in gray. To find scalars and other code faster while debugging, it is just simpler to concatenate. Every once in a while I will use qq{} for really long strings with some scalars and code in it, but that is rare. I am not too partial of the color my text editor has for hashes. I really should change that. :)

I haven't really looked on CPAN for these, but I doubt that there are any modules that have this level of specificity. They are not too functional outside of their specific topics. I haven't checked speed, but they are small, so it stands to reason that they are fast. Well, at least my reasoning anyway. I am not sure how robust they are, but I tried to cover all the bases under the specific topic. They are pretty portable, I think, as I did not make them specific to one platform such as loading them down with HTML. I will have to look into what a test suite is.

Thank you for searching CPAN on my behalf, I appreciate it. One day I may make a presence for myself there, but I am not quite that good yet. :)