Comment 4 for bug 462936

The emacs changelog's latest entry is:

emacs22 (22.2-0ubuntu6.1) karmic-proposed; urgency=low

  * backport patch from emacs23 to ensure that dynamic menus get updated properly
    Closes: #550541, LP: #415101
 -- Reinhard Tartler <email address hidden> Mon, 09 Nov 2009 12:03:17 +0100

but apt-cache policy emacs says:

emacs:
  Installed: 23.1+1-4ubuntu2+22.2+0ubuntu6.1
  Candidate: 23.1+1-4ubuntu2+22.2+0ubuntu6.1
  Version table:
 *** 23.1+1-4ubuntu2+22.2+0ubuntu6.1 0
        500 http://mirror.cpsc.ucalgary.ca karmic-updates/main Packages
        100 /var/lib/dpkg/status
     23.1+1-4ubuntu2+22.2+0ubuntu6 0
        500 http://mirror.cpsc.ucalgary.ca karmic/main Packages

Why did 23.1 end up in the version string when apt got to it?