Date: 31 Oct 2001 00:36:14 +1100

  I haven't quite managed a recursive listing, but I have worked out a
  recursive store, which is still useful. Hinted by a builtin display
  string for mhshow, I found the following works for mhstore:

    mhstore-store-message/rfc822: | mhstore -file -

  With that, mhstore will happily recurse down storing everything on
  its way. Not very discriminate, but the line can be altered to limit
  without destroying the recursion:

    mhstore-store-message/rfc822: | mhstore -auto -type message/rfc822 -type image/jpeg -file -

  which also names the files automatically for good measure.

  And, FWIW, I engage this by putting it in a separate file and
  invoking mhstore like

    env MHSTORE=mhn.rec mhstore

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