Robert J. Cups writes:
Basically, 4 and 5 should return data for at least one message (the highest UID message). Instead, they return data for no messages.RFC 3501, page 60 (6.4.8 UID Command):
That paragraph isn't in RFC 2060. Mark Crispin added it after he had a major cow when Courier-IMAP followed the RFC 2060 behavior to the letter, which he apparently privately thought it was a mistake, but wasn't willing to admit it.
Courier-IMAP does not seem to treat the range as being independent of the order of the range endpoints, nor does it include the UID of the last message in the mailbox.
Correct. This is mostly academical hairsplitting and bellyaching, and nobody else in the world, besides Crispin, gives a fig.
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