I'm doing this quickly, as I'm rushing off to the airport for a cross-US trip, but it looks like your grammar is something like: 
document: chunk(s?) /\z/
chunk: open chunk close | word(s)
open: "<open>"
close: "<close>"
word: /\w+/

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That should be enough to hang the proper return values from.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

update: 
document: stuff /\z/ { return $item{stuff} }
stuff: chunk(s?) { return [map {@$_} @{$item[1]} ] } # flatten adjacen
+t arrayrefs
chunk: open stuff close { return $item{stuff} } | word(s?) # returns a
+rrayref
open: "<open>"
close: "<close>"
word: /\w+/

[download]

In reply to Re: Parse RecDescent Nesting (Followup) by merlyn
in thread Parse RecDescent Nesting (Followup) by tphyahoo

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