Bug#1121249: t-code: failing "apt install t-code"

[Junio C Hamano <gitster@pobox.com>]

Package: t-code
Version: 2:2.3.1-11
Severity: grave
Justification: renders package unusable
X-Debbugs-Cc: gitster@pobox.com

Dear Maintainer,

t-code fails to install with "sudo apt install t-code"; the most
crucial bit seems to be the error message about "new-style add-on,
with no compat file".

    ...md64 t-code all 2:2.3.1-11 [119 kB]
    Fetched 119 kB in 1s (172 kB/s)
    Selecting previously unselected package t-code.
    (Reading database ... 310340 files and directories currently installed.)
    Preparing to unpack .../t-code_2%3a2.3.1-11_all.deb ...
    Unpacking t-code (2:2.3.1-11) ...
    Setting up t-code (2:2.3.1-11) ...
    ERROR: t-code is broken - called emacs-package-install as a new-style add-on, but has no compat file.
    Install t-code for emacs
    Install t-code for emacs
    Processing triggers for install-info (7.2-4) ...

-- System Information:
Debian Release: rodete
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.16.12-1rodete1-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages t-code depends on:
ii  emacs-nox [emacsen]  1:30.1+1-9+gl0
ii  t-code-common        2:2.3.1-11

t-code recommends no packages.

t-code suggests no packages.

-- no debconf information