Bug#856415: -n (dry-run) seems to be broken completely

[Michael Biebl]

Package: init-system-helpers
Version: 1.47
Severity: important
File: /usr/sbin/update-rc.d

update-rc.d -n seems to be broken i.e. ignored completely.

I've tested the sysv fallback and the systemd_toggle, but it looks like
upstart and insserv are affected as well (no idea about openrc).

While fixing the upstart toggle is not that important, we should at
least fix the sysv and systemd case or drop support for -n (and document
that change).


-- System Information:
Debian Release: 9.0
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages init-system-helpers depends on:
ii  perl-base  5.24.1-1

init-system-helpers recommends no packages.

init-system-helpers suggests no packages.

Versions of packages init-system-helpers is related to:
pn  insserv  <none>

-- no debconf information