[Mailman-Developers] MimeDel.py: after filtering, munge text/plain's back together

[Dan Mick]

> 2) at the end of filtering, there needs to be a check to see if
> all the remaining parts can profitably be recombined into
> one part, at least for text/plain.

a) obviously this is wrong for multiple real text attachments

b) maybe a better answer is "don't add headers and footers until
MimeDel runs (i.e. maybe MimeDel should come earlier in the
pipeline)

Hmm.