This isn't exactly the same as subscription, but the bug-affects-person relationship is now capable of following dups; see the branch that fixed bug #505845. Some of the code there might be useful in resolving this too.
This isn't exactly the same as subscription, but the bug-affects-person relationship is now capable of following dups; see the branch that fixed bug #505845. Some of the code there might be useful in resolving this too.