To fix this bug (#1718824), the pulseaudio_11.1-1ubuntu3.debdiff is enough. As a result, the pulseaudio_8.0-0ubuntu3.8.debdiff and the pulseaudio_10.0-2ubuntu3.1.debdiff are basically identical to pulseaudio_11.1-1ubuntu3.debdiff.
They do not contain the content of pulseaudio_11.1-1ubuntu4.debdiff because the 1ubuntu4.debdiff want to fix a regression introduced by commit 41782240, this commit is not applied to artful and xenial, so for 0ubuntu3.8.debdiff and 2ubuntu3.1.debdiff, they don't need the content of 1ubuntu4.debdiff.
reply #47 and #48:
To fix this bug (#1718824), the pulseaudio_ 11.1-1ubuntu3. debdiff is enough. As a result, the pulseaudio_ 8.0-0ubuntu3. 8.debdiff and the pulseaudio_ 10.0-2ubuntu3. 1.debdiff are basically identical to pulseaudio_ 11.1-1ubuntu3. debdiff.
They do not contain the content of pulseaudio_ 11.1-1ubuntu4. debdiff because the 1ubuntu4.debdiff want to fix a regression introduced by commit 41782240, this commit is not applied to artful and xenial, so for 0ubuntu3.8.debdiff and 2ubuntu3.1.debdiff, they don't need the content of 1ubuntu4.debdiff.