By exclude "new lines" I assume you mean "blank lines" ?
while (<>) {
  if (my $stat = /^group:/../^data:/) {
    print unless /^\s*$/ or $stat == 1 or $stat =~ /E/;
  }
}

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Update:Fixed during pfaut's reply to this node :-)

In reply to Re: File Parsing by runrig
in thread File Parsing by Anonymous Monk

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