Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Here's a regexp based solution, with minor tweeks on your code:

#!/usr/bin/perl use strict; use warnings; use Data::Dumper; sub strip_paren { my $input = $_[0]; our $re; $re = qr/ ( [^()]+ ) (?: \( ( (?: (??{$re}) )+ )+ \) )? /x; my @output = (); @output = $input =~ /$re/g; return @output; } sub print_crud { print "\nLine: ", shift, "\n"; foreach my $line (@_) { next if not defined $line; print " '$line'\n"; } } while (<DATA>) { chomp; print_crud( $_, strip_paren($_)); } exit; __DATA__ A A B A B C (A B) C A (B) C A (B C D) A(B C D) A (B C D) E A (B C D)E A (B C D) (E F G) A (B C D) (E F G) I A B (C (D E) (F G)) (H I) A B (C (D E) (F G)) (H I) J
I think it comes close to what you wanted.

In reply to Re: Help modifying recursive regex by Krambambuli
in thread Help modifying recursive regex by beeflobill

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others avoiding work at the Monastery: (13)
    As of 2014-11-28 08:39 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My preferred Perl binaries come from:














      Results (194 votes), past polls