As far as identifying them goes, you could grep your files for ${%{$ . That sequence of characters isn't likely to show up anywhere else except in these constructs.

Automating a change would be more tricky, but could probably be done. Something like this which you could filter all problem files through: 

#!/usr/bin/env perl
use strict; use warnings;

while(<DATA>){
  print "before: $_";;
  s|\${%{\$(\w+)}}{'(\w+)'}|\$${1}->{'$2'}|g;
  print " after: $_";;
  }

__DATA__
my $lValue = ${%{$lHashRef}}{'a'};

[download]

That might not work on all your variable names or if some are formatted a bit differently, but it could be a start.

Aaron B.
Available for small or large Perl jobs and *nix system administration; see my home node.

In reply to Re^3: hash dereferencing issue with perl 5.16.3 by aaron_baugher
in thread hash dereferencing issue with perl 5.16.3 by KANAKADANDI

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