Feature request: add unread items count in the Unity Launcher entry

In case it may help adding this feature, I have attached a debdiff.

Note, that the UnityLauncherEntry is not destroyed, I did not found how to properly do it.

I have tested this patch with Natty and Unity-2d (I cannot run the 'normal' Unity')

Attached a new debdiff, the previous one was missing the builddep to libunity.

I have also uploaded a PPA with the fix:
sudo apt-add-repository ppa:jfi/liferea
sudo apt-get update
sudo apt-get install liferea

I have put also the 'fix' into bzr: lp:~jfi/liferea/fix-for-bug-732848

Subscribed release-team to ask for a Feature Freeze Exception.

Rationnal: Natty is going to introduce Unity. I think that adding support of the Launcher entry count in an application like Liferea which has a significant number of users, is good to promote Unity. Anyway, it is definitively not a critical or major feature addition, more a 'nice to have' one.

The feature implementation can be retrieved from: lp:~jfi/liferea/fix-for-bug-732848 . It has been reviewed and approved by Ken VanDine.
The diff can be retrieved from: https://code.launchpad.net/~jfi/liferea/fix-for-bug-732848/+merge/53010/+preview-diff/+files/preview.diff

The package is compiling and installing in a clean way without issues. You can see the log or/and test the packaging from my PPA: https://launchpad.net/~jfi/+archive/liferea/+packages.

AFAIK, the changes does not introduce any regression, bug or issues or break packages which depends on it. Note, that the binary packages has a new dependence to Unity packages. Because of the small changes in term of code, I believe that the risk of regression should be considered as low.

I have successfully tested the changes during few days with Unity 2D and checked that it also works correctly with the 'Classic Desktop'. Note, that I did not test with 3D version of Unity.

I reviewed the diff, it's small enough. Also, this isn't a dependency for other features/packages, so it's easy to back out if it causes trouble. Approved.

This bug was fixed in the package liferea - 1.6.4-1ubuntu6

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liferea (1.6.4-1ubuntu6) natty; urgency=low

  * debian/patches/libunity.patch
    - Displays the number of unread items in the Unity Launcher
      entry (LP: #732848).
  * debian/control
    - Added missing build dep to libunity-dev
 -- Jean-Philippe Orsini <email address hidden> Thu, 10 Mar 2011 20:37:50 +0100

The feature is missing for me in Ubuntu 12.04 with version 1.8.3-0.1ubuntu2 of Liferea.