I worked on some perl code to extract some information I have on file about quotes (see Quote Page Help, posted earlier). I came up with some simple code, and before going into a database or any decision about that, I first want to see if what I have can suit my needs. However I get this error: 

Unmatched before ( HERE mark in regex m//-s(\S+)[^\n]*\n\/\-q(( << 
HERE ?:./  at qoutes.pl line 12

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Any reason/possible fixes for this? Thanks. 
my @files = qw(quotePAGE1 quotePAGE2);

for (@files) {
    open IN, $_ or die "failed opening file $_, at";
    $\ = "\n\n";
    my $num = 0;
    my($chunk,$q_num,%s_nums,%auth,@s,%subj);
    while($chunk = <IN>) {
        ++$num;
        $chunk =~ s|^/-a(\S+)[^/n]*\n|| or 
     die "no author?  file $_, chunk $num; at";
        $a = $1;
        while($chunk =~ s|/-s(\S+)[^\n]*\n/-q((?:.|\n)+?(?=/-))||) {
            $q_num = 0;
            $auth{$a}->[$q_num] = $2;
            @s = split /,/,$1;
            for (@s) { (undef($s_nums{$_}) && $s_nums{$_} = 0) || 
         $s_nums{$_} += 1 }
            $subj{$_}->[$s_nums{$_}] = $2 for @s;
        }
    }
}

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In reply to Perl code error by dimmesdale

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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