This can be made slightly less ugly by 

c:\@Work\Perl>perl -wMstrict -le
"use Data::Dumper qw(Dumper);
 ;;
 print qq{perl version $]};
 ;;
 q(abc de f abcdef) =~ m/
   ( (\w{3}) (?{ $+{x} = $^N; }) .* (??{ $+{x}; }) )
   /x and print qq{\$1 '$1' \n}, Dumper \%+;
"
perl version 5.008009
$1 'abc de f abc'
$VAR1 = {
          'x' => 'abc'
        };

[download]
if it's really necessary to have named backreferences in the regex via a hash.

Otherwise, I'm not sure I see its advantage over something like 

c:\@Work\Perl>perl -wMstrict -le
"print qq{perl version $]};
 ;;
 q(abc de f abcdef) =~ m/
   ( (\w{3}) .* \2 )
   /x and print qq{\$1 '$1'};
"
perl version 5.008009
$1 'abc de f abc'

[download]
or perhaps like 
c:\@Work\Perl>perl -wMstrict -le
"print qq{perl version $]};
 ;;
 my $match = my ($whole, $first_part) = q(abc de f abcdef) =~ m/
   ( (\w{3}) .* \2 )
   /x
 ;;
 print qq{first part '$first_part'  whole '$whole'} if $match;
"
perl version 5.008009
first part 'abc'  whole 'abc de f abc'

[download]

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Do a named regex group in 5.8? by AnomalousMonk
in thread Do a named regex group in 5.8? by crusty_collins

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