Used with functions like gmime.filter_best.FilterBest.encoding and gmime.object.ObjectWrap.encode as the 'constraint' argument. These values provide a means of letting the filter know what the encoding constraints are for the stream.
The stream data must fit within the 7bit ASCII range.
The stream data may have bytes with the high bit set, but no null bytes.
The stream may contain any binary data.
Used with functions like gmime.filter_best.FilterBest.encoding and gmime.object.ObjectWrap.encode as the 'constraint' argument. These values provide a means of letting the filter know what the encoding constraints are for the stream.