File: demo_reentrant.pl

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libtext-reform-perl 1.12.2-1
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#! /usr/bin/perl -w

use Text::Reform;

sub igpay_atinlay {
	return $2.$1.'way' if $_[0] =~ /^([aeiou])(.*)/;
	return $2.$1.'ay'  if $_[0] =~ /^(.)(.*)/;
}

$original = 
"Here is a piece of text of no special account, signifying
 nothing of consequence, existing solely to demonstrate a
 useful application of the re-entrant nature of form";

($translation = $original) =~ s/([^\s,]+)/igpay_atinlay($1)/ge;

print +form 
        "||||||||||||||||||||||||||||    |||||||||||||||||||||||||||||",
        scalar form("[[[[[[[[[]]]]]]]]]",$original),
        scalar form("[[[[[[[[[[[[[[[]]]]]]]]]]",$translation);