For what it's worth, UW imapd only lists the trailing hierarchy delimiter
form in two cases:
. the zero-character match case. In other words, if you list junk/* or
junk/% then junk/ will be included in the results
. hierarchy delimiter after the wildcard. In other words, if you
list junk/%/ you'll get *only* the names that are not \NoInferiors
in junk
It tries hard (and AFAIK succeeds) not to issue both the form with and
without the trailing hierarchy delimiter.
It works by running down the hierarchy. If a directory is encountered, it
reports the directory if either the form with or without a trailing
hierarchy delimiter matches the pattern. It then looks inside the
directory, if and only if there is a chance of any inferior names matching
the pattern.
I'm surprised that you report that Exchange doesn't return a name that has
inferiors when you use the % wildcard. You should see the form without
the trailing hierarchy delimiter in that case. I don't see how a client
could navigate Exchange's hierarchy otherwise.
-- Mark --
http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.
