There is no CPAN distribution that I could find called CGI::Escape - However, there is URI::Escape with which I have worked with before and does exactly what you need.
The function which performs the escaping, URI::Escape::uri_escape, can take two arguments, the first being the string to escape and the second a set of characters to escape - Unless otherwise specified, the function takes the following set as the characters to be escaped - "^A-Za-z0-9\-_.!~*'()". Usage of this function is documented in the module POD here.
Ooohhh, Rob no beer function well without! | [reply]
[d/l]
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