Comment 3 for bug 1251495

It feels I'm the only one coming by to clean every now and then - feels bad :-/
The change was revno: 1433

For the sake of any progress I made a ppa with the fix available at [1].

I thought lacking the experience to set it up correctly I can't drive a SRU [2]
But actually, this is easy enough just by looking at the code:

That should be enough I'd think:
$ grep -A 2 'change_header(' Mailman/Handlers/Tagger.py; grep -A 2 def Mailman/Handlers/CookHeaders.py | grep 'change_header('
        change_header('X-Topics', NLTAB.join(hits.keys()),
                      mlist, msg, msgdata, Delete=False)
def change_header(name, value, mlist, msg, msgdata, delete=True, repl=True):

@Mark - if you have not given up on this bug, if you can provide a "steps to reproduce" please feel free to add.

[1]: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3011
[2]: https://wiki.ubuntu.com/StableReleaseUpdates