mh-variant-set
mh-variant-set is an interactive compiled Lisp function in `mh-e.el
'.
(mh-variant-set VARIANT)
Set the MH variant to VARIANT.
Sets `mh-progs', `mh-lib', `mh-lib-progs' and
`mh-flists-present-flag'.
If the VARIANT is "autodetect", then first try nmh, then MH and
finally GNU mailutils MH.