patch applied (ghc): Fix the alternative layout rule to handle explicit let/in

[Ian Lynagh]

Tue Mar  2 08:51:19 PST 2010  Ian Lynagh <igloo at earth.li>
  * Fix the alternative layout rule to handle explicit let/in
  It used to break on
      let {x = 'a'} in x
  as the 'in' token would keep closing contexts looking for an implicit
  'let' layout.

    M ./compiler/parser/Lexer.x -8 +31

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20100302165119-3fd76-61044629c3591d67133ae9c9474128f307e69841.gz