I'm all for simplicity, so I'd split this into two steps: 
my $data = '<%def .errors>
missing_name: You must provide your name.
missing_email: You must provide your email address.
</%def>';

my ( $errors ) =
  $data =~ m[\Q<%def .errors>\E\n
             (.*\n)
             \Q</%def>\E
           ]sx;
my %errors = $errors =~ m{(\w+):\s*(.*?)\n}g;

print Dumper \%errors;

[download]

Output: 

$VAR1 = {
          'missing_email' => 'You must provide your email address.',
          'missing_name' => 'You must provide your name.'
        };

[download]

In reply to Re: regex parsing brainteaser by FunkyMonk
in thread regex parsing brainteaser by perrin

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