Re: [PATCH 3/3] format-patch: rfc2047-encode newlines in headers

Jeff King [off-list ref] writes:

These should generally never happen, as we already
concatenate multiples in subjects into a single line. But
let's be defensive, since not encoding them means we will
output malformed headers.

In this particular case, wouldn't it be more conservative and defensive to
produce malformed headers so that the patch won't leave the originator?  I
have a suspicion that mailinfo would choke on the output of this one, even
though I didn't try.