Comment 3 for bug 128978

I get this error:

Setting up emacs (22.1-0ubuntu3) ...
update-alternatives: priority must be an integer

Usage: update-alternatives [<option> ...] <command>

Commands:
  --install <link> <name> <path> <priority>
    [--slave <link> <name> <path>] ...
                           add a group of alternatives to the system.
  --remove <name> <path> remove <path> from the <name> group alternative.
  --remove-all <name> remove <name> group from the alternatives system.
  --auto <name> switch the master link <name> to automatic mode.
  --display <name> display information about the <name> group.
  --list <name> display all targets of the <name> group.
  --config <name> show alternatives for the <name> group and ask the
                           user to select which one to use.
  --set <name> <path> set <path> as alternative for <name>.
  --all call --config on all alternatives.

<link> is the symlink pointing to /etc/alternatives/<name>.
  (e.g. /usr/bin/pager)
<name> is the master name for this link group.
  (e.g. pager)
<path> is the location of one of the alternative target files.
  (e.g. /usr/bin/less)
<priority> is an integer; options with higher numbers have higher priority in
  automatic mode.

Options:
  --altdir <directory> change the alternatives directory.
  --admindir <directory> change the administrative directory.
  --test don't do anything, just demonstrate.
  --verbose verbose operation, more output.
  --quiet quiet operation, minimal output.
  --help show this help message.
  --version show the version.
dpkg: error processing emacs (--configure):
 subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
 emacs
E: Sub-process /usr/bin/dpkg returned an error code (1)