mh-index-update-maps

mh-index-update-maps is an autoloaded compiled Lisp function in `mh-search.el'.

(mh-index-update-maps FOLDER &optional ORIGIN-MAP)

Annotate all as yet unannotated messages in FOLDER with their MD5 hash.
As a side effect msg -> checksum map is updated. Optional
argument ORIGIN-MAP is a hashtable which maps each message in the
index folder to the original folder and message from whence it
was copied. If present the checksum -> (origin-folder,
origin-index) map is updated too.