RFC 2045 §5.2 states that when no charset is specified, us-ascii should be assumed as default.
This change adds the us-ascii charset when no charset is specified but may be a breaking change as seen in the number of test cases that needed to be updated to accommodate this change.
117 makes a point about an implicit charset
RFC 2045 §5.2 states that when no charset is specified, us-ascii should be assumed as default. This change adds the us-ascii charset when no charset is specified but may be a breaking change as seen in the number of test cases that needed to be updated to accommodate this change.