Silly. Practical dictionary-based schemes have an entropy encoder on the back end and often that's a Huffman encoder or something similar in spirit. Huffman e

Silly. Practical dictionary-based schemes have an entropy encoder on the back end and often that's a Huffman encoder or something similar in spirit. Huffman encoding is superseded not by dictionary-based methods, but by arithmetic encoding, which can compress beyond the Huffman limit because it can use fractions of a bit. 7zip, for instance, beats the pants off gzip because it uses a very large dictionary window AND arithmetic compression instead of huffman encoding on the back end.