hpj-pretty-expr

Copperbox revision 2710.

I've started a new project for pretty printing expressions.

The base code is from Norman Ramsey's paper "Unparsing Expressions With Prefix and Postfix Operators". My hypothesis is that if I define sets of expression / operator printers for languages like C or Haskell people can use the library and get good parenthesized pretty printing with only a little more code than writing a naive (brackets everywhere) pretty printer.