* Sebastian Reichel <sre@debian.org>, 2016-08-27, 02:24:
rc-alert -dU `wnpp-alert | grep "^O " | cut -d' ' -f 3`
I don't think this handles the case when the RC bug was filed against a binary package that has a different name than the source package.
Anyway, it's not like orphaned are the only packages that are neglected (or that all orphaned packages are neglected). Please consider running rc-alert against all packages you have installed (which incidentally make the command-line much simpler):
$ rc-alert -dU -- Jakub Wilk