(emacs-nox) uninstall fails, with no modifications

[Loren McIntyre]

Uninstall fails on error from scripts unique to package.

$ sudo apt install emacs-nox
$ sudo apt purge emacs-nox
...
Removing emacs-nox (1:27.1+1-3ubuntu5.1) ...
update-alternatives: alternative /usr/bin/emacs for editor not registered; not removing
update-alternatives: alternative /usr/bin/emacs-nox for emacs not registered; not removing
chdir /var/lib/emacsen-common/state/flavor/installed: No such file or directory at /usr/lib/emacsen-common/lib.pl line 27.
dpkg: error processing package emacs-nox (--remove):
 installed emacs-nox package pre-removal script subprocess returned error exit status 2
dpkg: too many errors, stopping
update-alternatives: error: alternative path /usr/bin/emacs-nox doesn't exist
dpkg: error while cleaning up:
 installed emacs-nox package post-installation script subprocess returned error exit status 2
Errors were encountered while processing:
 emacs-nox
Processing was halted because there were too many errors.
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)

Description: Ubuntu 22.04.4
LTS Release: 22.04

$ apt-cache policy emacs-nox
emacs-nox:
  Installed: 1:27.1+1-3ubuntu5.1
  Candidate: 1:27.1+1-3ubuntu5.1
  Version table:
 *** 1:27.1+1-3ubuntu5.1 500
        500 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     1:27.1+1-3ubuntu5 500
        500 https://mirror.enzu.com/ubuntu jammy/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu jammy/universe amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: emacs-nox 1:27.1+1-3ubuntu5.1
ProcVersionSignature: Ubuntu 6.5.0-45.45~22.04.1-generic 6.5.13
Uname: Linux 6.5.0-45-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.20.11-0ubuntu82.6
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Thu Sep 5 16:32:25 2024
SourcePackage: emacs
UpgradeStatus: No upgrade log present (probably fresh install)