Adam Kennedy's new module PPI:

   http://www.perl.com/pub/a/2005/06/09/ppi.html
   http://search.cpan.org/perldoc?PPI

His module attempts to implement a parser that:
>  ... creates a "round-trip" capability, parsing a file into an internal 
>  model and back out again without moving a single white space character 
>  out of place. Even if parts of a file are broken or badly formatted, 
>  you can still change other parts of the file and save it correctly 
>  without it changing anything you don't alter.
> 
>  Second, it makes the parser extremely safe and error-tolerant. Any 
>  code open in an editor is there for a reason--generally because it 
>  isn't finished yet, is broken, or needs changing. A document parser 
>  can hit a problem, flag it, stumble for a character or so until it 
>  finds something it recognizes, and then continue on.

I wonder if there are concepts in his implementation that have a 
bearing on Perl 6 design?

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Matisse Enzer <matisse@[...].net> 
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