use warnings;
use strict;

use Data::Dump qw(pp);

print "perl version $] \n\n";

for my $line (
  "\"quoted text\" \cM\cJ", "\"quoted_text\" \cM\cJ", "\"quoted-text\" \cM\cJ"
  ) {

  print 'line: ', pp($line), "\n";

  my @ra;

  @ra = $line =~ m/^(\s*)((?'quote'"?)[^\s"]*\g{quote})\s+(\[[^\]]*\]|)\s*$/;
  print 'rx 1: ', pp(\@ra), "\n";

  @ra = $line =~ m/^(\s*)((?'quote'"?)[^\s"]*")\s+(\[[^\]]*\]|)\s*$/;
  print 'rx 2: ', pp(\@ra), "\n";

  @ra = $line =~ m/^(\s*)(("?)[^\s"]*")\s+(\[[^\]]*\]|)\s*$/;
  print 'rx 3: ', pp(\@ra), "\n";

  @ra = $line =~ m/^(\s*)("?[^\s"]*")\s+(\[[^\]]*\]|)\s*$/;
  print 'rx 4: ', pp(\@ra), "\n";

  }

##</code><code>##

c:\@Work\Perl\monks\Ach>perl regex_problem_1.pl
perl version 5.014004

line: "\"quoted text\" \r\n"
rx 1: []
rx 2: []
rx 3: []
rx 4: []
line: "\"quoted_text\" \r\n"
rx 1: ["", "\"quoted_text\"", "\"", ""]
rx 2: ["", "\"quoted_text\"", "\"", ""]
rx 3: ["", "\"quoted_text\"", "\"", ""]
rx 4: ["", "\"quoted_text\"", ""]
line: "\"quoted-text\" \r\n"
rx 1: ["", "\"quoted-text\"", "\"", ""]
rx 2: ["", "\"quoted-text\"", "\"", ""]
rx 3: ["", "\"quoted-text\"", "\"", ""]
rx 4: ["", "\"quoted-text\"", ""]