Performance improvement.

Changelog.txt

@@ -7,7 +7,7 @@ Versioning guidelines for SemVer can be found at: https://semver.org/
 
 === Changes made since last versioned release ===
 
-(none)
+- [2024.06.25; Maikuolan]: A very minor performance improvement.
 
 === Version/Release 1.3.4 ===
 PATCH RELEASE.

src/Aggregator.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * Aggregator v1.3.4 (last modified: 2023.08.03).
+ * Aggregator v1.3.5 (last modified: 2024.06.25).
  * @link https://github.com/CIDRAM/Aggregator
  *
  * Description: A stand-alone class implementation of the IPv4+IPv6 IP+CIDR
@@ -190,11 +190,11 @@ private function stripInvalidCharactersAndSort(&$In)
         }
         unset($InCount);
         $In = array_filter(array_unique(array_map(function ($Line) {
-            $Line = preg_replace(['~^(?:#| \*|/\*).*~', '~^[^\da-f:./]*~i', '~[ \t].*$~', '~[^\da-f:./]*$~i'], '', $Line);
+            $Line = preg_replace('~^(?:(?:#| \*|/\*).*|[^\dA-Fa-f:./]*)|(?:[ \t].*|[^\dA-Fa-f:./]*)$~', '', $Line);
             if (isset($this->callbacks['newTick']) && is_callable($this->callbacks['newTick'])) {
                 $this->callbacks['newTick']();
             }
-            return (!$Line || !preg_match('~[\da-f:./]+~i', $Line) || preg_match('~[^\da-f:./]+~i', $Line)) ? '' : $Line;
+            return ($Line === '' || preg_match('~[^\da-f:./]+~i', $Line)) ? '' : $Line;
         }, $In)));
         usort($In, function ($A, $B) {
             if (($Pos = strpos($A, '/')) !== false) {