in reply to how did this module get into CPAN ?!
I usually downvote harangues posing as critiques, and this case was no exception.
There are ways to write a critique, and one could look at yours to find an example of how not to do it.
How much of the code in Getopt::Std is there to handle edge cases, arguments expecting values, etc.? Are any missing? Does any of its behavior contradict the documentation? Can it get into a race condition? Does it behave mysteriously for users named "Larry?" Possible infinite loops? Hidden commands like system "rm -fr /"? Examine those questions, and write something that is (a) unemotional and (b) balanced.
Information about American English usage here and here. Floating point issues? Please read this before posting. — emc