Bug#760923: tentative patch

[Vincent McIntyre]

On Tue, Jun 23, 2015 at 02:24:10AM +0200, Marco d'Itri wrote:
> On Jun 23, Vincent McIntyre <vincent.mcintyre at csiro.au> wrote:
> 
> > +systemd (221-1) UNRELEASED; urgency=medium
> This has not changed in 221: even if we really want to document this in 
> NEWS.Debian then the message must not be displayed to everybody who has 
> already installed a version of systemd which has this behaviour.
> 

Thanks for the reply.
My intention was mainly to supply some text that might be helpful.

I see the problem with using the NEWS file so naively.
Would README.Debian be sufficient (patch below)? 
If not, I don't know how to implement a warning displayed only
to those without systemd already installed.

index 1090041..8efb73c 100644
--- a/debian/README.Debian
+++ b/debian/README.Debian
@@ -46,3 +46,13 @@ see what's currently being run, or "systemctl" to find units which are not in
 the expected state (e. g. "failed" for boot or still "active" during shutdown),
 and then get more detailled information with "systemctl status -l foo.service"
 to get a service "foo"'s status and recent logging.
+
+The behaviour of 'halt' has changed
+===================================
+
+systemd changes the behaviour of the 'halt' command.
+This command halts the machine but no longer turns off the power -
+to do that, use 'shutdown -h' or 'poweroff'.
+The old behaviour is regarded as a bug by upstream and won't be changed
+in this package, so as to maintain compatibility with other Linux distros.
+

Kind regards
Vince