I am writing a few websites using Mason. I would like some advice on how to deal with input from forms. With each value from the form I currently pass it through a regex to check it for unsafe characters. This works well, but hampers the user interface. For example I currently disallow the use of the ' character. This has the effect of incurring spelling and grammar mistakes, such as isn't can not be entered.
I was thinking maybe the way to deal with it is to convert the characters into something non dangerous to process, and then re-convert then back when outputting.
Also I have read about converting input based on its character set into Perl's internal format, would this be an answer?
I appreciate any thoughts and help. Thanks in advance for any help.

In reply to Securing HTML query strings by rooneyl

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