I've just started incorporating bugfixes (or my versions of them) from the NMU series into dpkg proper.
I'm going to abuse the BTS, by recording whether I've incorporated a particular bugfix, or intend not to before I release a non-NMU-based version, by the use of the `forwarded' flag. So, I hereby declare that nobody but me personally is to mark a bug against dpkg or dpkg-dev as forwarded. If you do so and I don't notice then the bug will reappear in a future non-NMU dpkg version. I have just unforwarded the one bug which was currently marked as forwarded. Ian.