In regards to the feature flag, I had considered that general approach.
The problem is that feature flags are for page context.  That's not what
we are interested in here: we are interested in bug tasks.  For any bug
modified, we will need to iterate over its bug tasks to see if the bug
is pertinent.  We could force feature flags to have this connotation as
well, but it would be different than what devs would generally expect a
feature flag to do: if I say "project:launchpad" for a scope then I
would expect that to be pertinent to be pages within a pillar.  Making
it mean both would be surprising in a bad way, IMO.  Therefore, I was
thinking of the simple default scope with comma-delimited values for
distributions and projects.  I presented this to Graham and Francis over
the phone, and they agreed.

I had a pre-imp with Graham.  The following are what we agreed.

 * Contrary to a strict interpretation of the bug description, but following 
the "Confirmed" policy from https://wiki.ubuntu.com/Bugs/Status , a bug task 
should move from "New" to "Confirmed" if there is a single duplicate bug *filed 
by another person or affecting more than one person* (duplicate bugs >= 1), or 
if a bug affects more than one person (affects >= 2).
 * OPEN QUESTION: if a bug has been explicitly moved back to "New," should we 
not make the change--that is, should we honor explicit moves back to "New"?  
Given current feedback on related issues, I believe the answer is that we 
should still make the change, ignoring any previous explicit moves.  That would 
certainly be easier.
 * [@Martin] the Launchpad Janitor will be the person who moves the status from 
"New" to "Confirmed," as recorded in logs and mail.
 * We will decide whether or not we need to change the value under these 
circumstances, hopefully using event listeners.
   * Duplicate is added.  According to Graham we fire events in some but not 
all of the pertinent cases at this time.
   * "Also affects" is added.  Graham thinks we do not fire events for this at 
all right now.
   * When a bug task is added.  Note that in this case we will want the bug to 
start in the "New" state but then moved to "Confirmed" within the same 
transaction (but with a separate log entry and notification).  That might be a 
bit tricky.
 * Similarly, for as long as following this policy is optional, here are some 
reaction thoughts.
   * When a bugtask changes targets (we may be moving from a target that does 
not participate to one that does) we should react.
   * We should NOT try to undo a move from new to confirmed if the bug task 
switches targets to a project that does not participate.
 * The feature flag will be able to specify projects and distributions to 
participate.  Packages in a distribution will be affected by the configuration 
for the distribution.  Milestone bugtasks will be affected by the associated 
project etc.

In a follow-up with Francis, I received another clarification.

 * We plan to roll this behavior out to *all* projects/distros, without
a configuration option.  The feature flag is just there to help us qa
and test, and we should include a "*" option for the feature flag so
that we can open the feature up to all projects (and revert it if there
are problems).  Launchpad has a position that we control the definition
and workflow of statuses, and this is our decision of how we want to
define the statuses.  We will expect to take some flak over the change.

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https://bugs.launchpad.net/bugs/777874

Title:
  If multiple reports on new bug, mark it confirmed

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