David Hunt suggested to Gary Funck:
| ... You can tell formail how many consecutive header-fields to
| find before it considers that to be the start of a new message with
| the -m option. I haven't used this option yet, but the formail manpage
| has a bit on it under "Options, -m minfields" You might try flagging
| formail like this: -m 3 -ds
| I don't know if you'll need to spec 3 or 4, but give it a try, and let
| me know if it works.
Try -m3. Four are probably too many: a lot of digest articles will have only
From:, Subject:, and Date:, so if you insist on -m4 you'll find each of those
agglutinated to the preceding article.
If the list in question accepts articles without subjects, then even three
might be too many, and then we're back to -m2 (the default) and to getting
a spurious article because of those header fields at the start of the TOC.
If that's the case, run that particular list's digests through formail +2ds
rather than formail +1ds.