Duplicate "cache" in doveadm's help text

Hi there,

when I type doveadm help to print out the basic usage of the command then it lists the following:

… mailbox cache|cache|create|delete|list|metadata|mutf7|path| rename|status|subscribe|unsubscribe|update …

I'm somewhat curious about that double "cache" which looks a bit irritating to me. I would understand it, if it was 3 "cache"s (one for each of 'purge', 'decision', and 'remove', see doveadm help mailbox). But I do not understand 2 entries. :^) Looks like a minor bug to me.

regards, H. Thiele

(maybe it should list things verbosely anyway: "cache purge|cache decision|cache remove|…" ?)