Here is a sample program using the code I suggested and the data you supplied.

The criteria for deletion are the values of the first two extracted fields of your sample record. I hard coded the values for this demo.

Please note (as mentioned in another node) that if your data contains any kind if html code this technique will fail if the data matches your delimiters. 

    $location = "1";           # hard code deletion info
    $obj_name = "Stock3of1";

    undef $/;     # Slurp mode
    $_ = <DATA>;
    print "-Before=====================================\n";
    print "$_\n";
    

    while(/<\?--([^-]*)-([^-]*)-->(.*?)<\/\?--([^-]*)-([^-]*)-->/sg){
      $a=$1; $b=$2; $c=$3; $d=$4; $e=$5;
# debug output
#      print "-A--------\n$a\n-B--------\n$b\n-C--------\n$c\n-D------
+--\n$d\n-E--------\n$e\n-eor------\n\n";
      unless (($a eq $location) and ($b eq $obj_name)) { 
        $list=$list. "<?--$a-$b-->$c</?--$d-$e-->\n";
}

    }
    print "-After======================================\n";
    print "$list\n";
__END__
<?--1-News1-->
<b>This is option News 1 of 1</b>
</?--1-News1-->

<?--1-Weather2of1-->
<b>This is option Weather 2 of 1</b> 
</?--1-Weather2of1-->

<?--1-Stock3of1-->
<b>This is option Stock 3 of 1</b>
</?--1-Stock3of1-->

<?--2-Second1of2-->
<b>Option Second 1 of 2</b>
</?--2-Second1of2-->

<?--3-Third1of3-->
<b>Option Third 1 of 3</b>
</?--3-Third1of3-->

[download]
Here are the results. 
-Before======================================
<?--1-News1-->
<b>This is option News 1 of 1</b>
</?--1-News1-->

<?--1-Weather2of1-->
<b>This is option Weather 2 of 1</b> 
</?--1-Weather2of1-->

<?--1-Stock3of1-->
<b>This is option Stock 3 of 1</b>
</?--1-Stock3of1-->

<?--2-Second1of2-->
<b>Option Second 1 of 2</b>
</?--2-Second1of2-->

<?--3-Third1of3-->
<b>Option Third 1 of 3</b>
</?--3-Third1of3-->

[download]
 
-After======================================
<?--1-News1-->
<b>This is option News 1 of 1</b>
</?--1-News1-->
<?--1-Weather2of1-->
<b>This is option Weather 2 of 1</b> 
</?--1-Weather2of1-->
<?--2-Second1of2-->
<b>Option Second 1 of 2</b>
</?--2-Second1of2-->
<?--3-Third1of3-->
<b>Option Third 1 of 3</b>
</?--3-Third1of3-->

[download]
Disclaimer

In reply to Re: Re: Re: Deleting on Text File by admiraln
in thread Deleting on Text File by Anonymous Monk

Title:
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