[Nmh-workers] Bad multipart boundary values, redux

[Ken Hornstein]

We had a discussion in November regarding the multipart boundary values
that nmh uses, and how it broke one particular mailing list software.

I just received an email with this:

Content-Type: multipart/alternative; 
        boundary="----4Oz1uemc|;yeFynqec7gEs^b|e.m;"

And that, it turns out, breaks exmh (it looks like the problem is the
semicolon).  But nmh is fine with it.

--Ken