#!/usr/bin/perl

use strict;
use warnings;
use Data::Dumper;
my ($selection,$selection2,$selection3,$value,$t2);
$value = "13gr";
print "regex question: How do I modify in place in only one character class?\n";

$selection = qq|
<option value="000-F--10180">000-F
<option value="11EG--10181">11EG
<option value="12160--10182">12160
<option value="12164--10185">12164
<option value="12170--10186">12170
<option value="12216--12216">12216
<option value="12330--12330">12330
<option value="12480--12480">12480
<option value="12484--12484">12484
<option value="12488--12488">12488
<option value="12534--12534">12534
<option value="12756--12756">12756
<option value="12760--12760">12760
<option value="12764--12764">12764
<option value="12813--12813">12813
<option value="12A--10983">12A
<option value="12B--10987">12B
<option value="12BB--10347">12BB
<option value="12D--10993">12D
<option value="12ea--10376">12ea
<option value="12JI--10438">12JI
<option value="12NO--10242">12NO
<option value="13gr--11117">13gr
<option value="2--2--11070">2--2
<option value="22QS--33337">22QS
<option value="22WO--55555">22WO
<option value="22WO.1--64444">22WO.1
|;
$selection2 = $selection ;
$selection3 = $selection ;
$selection =~ s/(\Q$value\E)/$1 selected/ ;

$selection2 =~ s/((?:.*?($value)){2}).*(\">)// ;

$selection3 =~ s/(?:.*?($value)){2}// ;
my $t3 = $&;

#print "Matches: $1, $2, $3, $4, $5, $6, $7\n";

($t2 = $t3) =~ s/(\">)/\" selected >/ ;
$selection3 .= $t2 ;

print "3: $selection3\n\n";

print "value $value\n"