same URL, different encoding

If I have the following URL:

http://www.cistron.nl/~miquels/

I can encode it as:

http://www.cistron.nl/~miquels/
http://www.cistron.nl/%7emiquels/
http://www.cistron.nl/%7Emiquels/

Should squid realize that these are the same URLs and cache them only
once, or should squid treat them as 3 different URLs ? I think the
latter is what it does now.

Mike.

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