And I also changed /\S+/ to /\S+(?!\S)/ to make sure each elem was a maximum-length word.

Useless. P::RD will not backtrack through /.../. They always match as much as possible.

For example, 

use Data::Dumper qw( Dumper );
use Parse::RecDescent ();

my $p = Parse::RecDescent->new(<<'__END_OF_GRAMMAR__');
parse : /a*/ /a/ /\Z/ { [ $item[1], $item[2] ] }
__END_OF_GRAMMAR__

print(Dumper($p->parse('aaaaa')));

[download]

outputs 

$VAR1 = undef;

[download]

I almost said "The \b in /\d+\b/ is also useless.", but it turns "2foo bar" into an error.

In reply to Re^2: Parse::RecDescent and Dynamically Matched Subrule Repetition by ikegami
in thread Parse::RecDescent and Dynamically Matched Subrule Repetition by lhoward

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