--- /dev/null
+Perhaps something like
+ be-handle-mail --notify-since <revision-id>
+to tell subscribers about changes since the specified revision.
+
+This would duplicate mail to P in our first example above, but that's
+not too annoying, and P might _want_ to know what R had merged from Q.
+
+On the other hand it would be annoying if 10 other repos merged Q and
+ran the notification.
+
+We could make the subscription something like
+ subscribe BUG-ID HOST-LIST
+e.g.
+ subscribe 1234 bugseverywhere.org,fancy_branch.com
+ subscribe abcd *
+To allow users to whitelist hosts they want updates from.
--- /dev/null
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:52:25 +0000
+
+
+From: W. Trevor King <wking@drexel.edu>
+
+
+In-reply-to: 950ac308-f3e1-4956-885a-e79ce3025fd5
+
--- /dev/null
+"all" and "new" might be valid shortnames?
+
+Nope, UUID string representations are restricted to hex (0-9a-f) and
+"-" as per RFC 4122 section 3.
+
--- /dev/null
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:53:02 +0000
+
+
+From: W. Trevor King <wking@drexel.edu>
+
+
+In-reply-to: 85a2d1ac-200a-4ae7-841f-9f4e87795dbf
+
--- /dev/null
+Obviously via the control interface:
+ subscribe #BUG-ID
+ subscribe new
+ subscribe all
+ unsubscribe #BUG-ID
+ ...
+Implemented via .extra_strings, although we'll need
+BugDir.extra_strings for the repo-wide new/all.
--- /dev/null
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:34:20 +0000
+
+
+From: W. Trevor King <wking@drexel.edu>
+
--- /dev/null
+This creates an interesting situation:
+ Person P subscribes to bug B in repo R.
+ Repo S merges repo R.
+ Person Q comments on B in S.
+ S notifies P :).
+which is nice. However
+ Person P subscribes to bug B in repo R.
+ Person Q comments on B in repo S.
+ R merges S.
+ P never notified about Q's comment.
--- /dev/null
+Content-type: text/plain
+
+
+Date: Tue, 21 Jul 2009 19:34:32 +0000
+
+
+From: W. Trevor King <wking@drexel.edu>
+
+
+In-reply-to: 85a2d1ac-200a-4ae7-841f-9f4e87795dbf
+
--- /dev/null
+assigned: W. Trevor King <wking@drexel.edu>
+
+
+creator: W. Trevor King <wking@drexel.edu>
+
+
+reporter: W. Trevor King <wking@drexel.edu>
+
+
+severity: minor
+
+
+status: open
+
+
+summary: 'subscribe/unsubscribe (bug #..., "new bugs", "all", etc.)'
+
+
+time: Tue, 21 Jul 2009 19:27:04 +0000
+