matching the last part of a url

I am not managing to crack this for a syntax highlight rile.

http|www.foo.bar/baz/baz -> I want to match baz
http|www.foo.bar/baz/baz/ -> I want to match baz/
http|www.foo.bar/baz/baz/biz -> I want to match biz

Thanks for any solution.

Eric

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