mh-letter-complete-function-alist

mh-letter-complete-function-alist is a variable defined in `mh-letter.el'.
Its value is shown below.

Documentation:
Alist of header fields and completion functions to use.

Value:

((bcc . mh-alias-letter-expand-alias)
 (cc . mh-alias-letter-expand-alias)
 (dcc . mh-alias-letter-expand-alias)
 (fcc . mh-folder-expand-at-point)
 (from . mh-alias-letter-expand-alias)
 (mail-followup-to . mh-alias-letter-expand-alias)
 (mail-reply-to . mh-alias-letter-expand-alias)
 (reply-to . mh-alias-letter-expand-alias)
 (to . mh-alias-letter-expand-alias))