Fix missing types

Author: dantleech

src/TextUI/Configuration/SourceFilter.php

@@ -39,8 +39,9 @@ public static function instance(): self
     {
         if (self::$instance === null) {
             $source = Registry::get()->source();
+            self::$instance = new self($source);
 
-            return new self($source);
+            return self::$instance;
         }
 
         return self::$instance;

src/Util/FileMatcher.php

@@ -90,11 +90,9 @@ private static function mapToRegex(array $tokens): FileMatcherRegex
                 self::T_BRACKET_OPEN    => '[',
                 self::T_BRACKET_CLOSE   => ']',
                 self::T_HYPHEN          => '-',
+                self::T_COLON           => ':',
+                self::T_BACKSLASH           => '\\',
                 self::T_CHAR_CLASS      => '[:' . $token[1] . ':]',
-                default                 => throw new RuntimeException(sprintf(
-                    'Unhandled token type: %s - this should not happen',
-                    $type,
-                )),
             };
         }
         $regex .= '(/|$)';