PrettyFormat trips on invalid UTF-8 sequences

[lionello]

The guichan repo (https://code.google.com/p/guichan/) has some log entries which are utf-8 encoded, some which are not. All of these get appended together and the XML encoder has not way to parse the string.

Fixed by adding a single line to getPrettyFormat in Repository.php:

     public function getPrettyFormat($command)
     {
         $output = $this->getClient()->run($this, $command);
         $format = new PrettyFormat;

+        // Remove invalid UTF-8 sequences (which would trip the XML parser)
+        $output = mb_convert_encoding($output, 'UTF-8', 'UTF-8');
         return $format->parse($output);
     }

[p3x-robot]

please work here: https://github.com/patrikx3/gitter