mix-in functionality for mbox2dok, see A2E::Lokvars(3) regarding the mix-in concept.
mbox2dok(1) A2E::Mktdir(3)
the non overwritable part for mixin use
Deriving the mbox name from the rest (relative filename starting after current month mbox directory) and the dok, as in
rest:adv, dok:oas_adv1003 --> adv
rest:ocr, dok:od_ocr1003 --> d_ocr
rest:ocr, dok:d_ocr1003 --> ocr
rest:ocr, dok:adv_ocr1003 --> ocr
rest:adv/maus07, dok: od_maus100307 --> d_maus07
rest:adv/maus07, dok: oas_maus100307 --> adv_maus07
basic variant for use in A2E::Mktdir, usable in directories that are not yet committed to svn
commmandline_variant: assuming that we are working in a directory that is already in svn