Fixes #3461 Badword Filter Enhancement (2) (#3489)

* badword filter enhancement

* Filter bad words in text wrapped with url

inc/class_parser.php

@@ -679,9 +679,9 @@ function generate_regex($bad_word = "")
 			return;
 		}
 
-		// Neutralize multiple adjacent wildcards and generate pattern
-		$ptrn = array('/\*\++/', '/\++\*/', '/\*+/');
-		$rplc = array('*', '*', '[^\s\n]*');
+		// Neutralize escape character, regex operators, multiple adjacent wildcards and generate pattern
+		$ptrn = array('/\\\\/', '/([\[\^\$\.\|\?\(\)\{\}]{1})/', '/\*\++/', '/\++\*/', '/\*+/');
+		$rplc = array('\\\\\\\\','\\\\${1}', '*', '*', '[^\s\n]*');
 		$bad_word = preg_replace($ptrn, $rplc, $bad_word);
 
 		// Count + and generate pattern
@@ -707,7 +707,7 @@ function generate_regex($bad_word = "")
 			$trap .= '[^\s\n]{'.($plus-1).'}';
 		}
 
-		return '\b'.$trap.'\b';
+		return '[\b\B]{0}'.$trap.'[\b\B]{0}';
 	}
 
 	/**
@@ -1133,9 +1133,7 @@ function mycode_parse_url($url, $name="")
 
 		// Fix some entities in URLs
 		$url = $this->encode_url($url);
-
-
-		$name = preg_replace("#&\#([0-9]+);#si", "&#$1;", $name); // Fix & but allow unicode
+		$name = $this->parse_badwords(preg_replace("#&\#([0-9]+);#si", "&#$1;", $name)); // Fix & but allow unicode, filter bad words
 
 		eval("\$mycode_url = \"".$templates->get("mycode_url", 1, 0)."\";");
 		return $mycode_url;