Comment # 4 on bug 768947 from Christian Boltz

I heard something about libzypp parsing /v/l/zypp/history, but I'm not sure if
it's really implemented or "just" an idea that was never implemented.

Anyway, I searched for lines about deleting packages, and an example is:

    2017-08-05 23:26:45|remove |libGLEW1_13|1.13.0-2.7|x86_64||

so the general (quite simple) format is

    $date $time|remove |$package|$version|$arch||

Also, lines starting with   #   can be added as comments. This is used for
things like %post output, but could also be used for comments by purge-kernels.


That said - no promises about a patch ;-) It shouldn't be hard, but my perl is
a bit rusty and I suffer from the usual EBUSY error you probably also know ;-)