Import: Don't copy nulls from emails into git
Recently I ran git --git-dir=lkml/git/1.git fsck
and it reported:
> warning in commit
299dbd50b6995c6debe2275f0df984ce697fb4cc: nulInCommit: NULL byte inthe commit object body
Which I found quite scary. Nulls in the wrong place have a bad tendency
to make programs misbehave.
It turns out someone had placed "=?iso-8859-1?q?=00?=" at the end of
their subject line. Which is the mime encoding for NULL. Email::Mime
had correctly decoded the header, and then public-inbox had simply
copied the contents of the header into the subject line of the git
commit.
To prevent that from causing problems replace nulls in such subject
lines with spaces.
Signed-off-by: Eric Biederman <ebiederm@xmission.com>