Comment 11 for bug 1585556

A fix has been provided for Checkbox.

However, the submission files previously created by Checkbox have to be manually cleaned up to remove these strange characters (basically, "^[" should be replaced by "" (nothing)).

Then you can check if the edited submission file can be parsed by Checkbox:

    cat edited_submission.xml | plainbox dev parse submission

If Checkbox doesn't crash, then the submission is OK and can be sent over to C3!