[Haskell-cafe] Alex and Flex

[Manlio Perillo]

Hi.

I'm starting to write a CSS parser with Alex and Happy.
The grammar is defined here:
http://www.w3.org/TR/CSS21/grammar.html

However I have noted that there are some difference in the syntax 
between Alex and Flex?
What is the rationale?


One more thing.
Here: http://www.haskell.org/alex/doc/html/alex-files.html
it seems that there is an error with
macrodef  :=  @smac '=' set
            |  @rmac '=' regexp

it should be
macrodef  :=  $smac '=' set
            |  @rmac '=' regexp




Thanks   Manlio Perillo