Is this search string a regexp or a normal string?

If not: 
foreach $line ( @data ) {
  $line =~ s/ //gm;
  $first_part = substr($line, 0, 16); # get first 16
  $idx = index( $line, "Search String", 16 );
  $second_start = $idx > 30 ? $idx - 30 : 0;
  
  if ( $idx != -1 ) {
    $second_part = substr( $line, $second_start, 30 );
    $third_part  = substr( $line, $idx+length("Search String"), 30 );
  } else {
    $second_part = $third_part = "";
  }
  $line = "";
}

[download]
(untested)

Update: Added some bounds checking to avoid errors

In reply to Re: regex man they are tough by Transient
in thread regex man they are tough by tgolf4fun

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