chickadee » internet-message » msg-id

A message identifier, e.g. <1234@local.machine.example>, with the angle brackets dropped, not stored. bi-msg-id-list1 matches one or more, with no separator character required between them (each one self-delimits), folded to a list of msg-id values, and printed with a canonical space between them. Accessors: msg-id-id-left, msg-id-id-right.