I think there was a misunderstanding. I have perl 5.8.8 which has the history UP TO 5.8.8. I need to read changes from versions after 5.8.8 to 5.20.x to determine if anything will break. Last time we upgraded from Perl 5.004 to 5.8.8 the (s)printf function went from rounding, to not rounding, which caused us quite a lot of problems.
Thank you.