Nicholas,
> [I] wrote the attached convenience script ;-) Unfortunately the
> script requires a manual 'apt policy package'
Codswallop. *grin*
How about (untested):
$ rmadison --suite=stretch-backports $(dpkg-parsechangelog -SSource) \
| awk '{ print $3 }' | grep . || echo '0~'
Regards,
--
,''`.
: :' : Chris Lamb
`. `'` lamby@debian.org / chris-lamb.co.uk
`-