Comment # 4 on bug 984778 from Andreas Stieger

The problem here would e detecting which patch was now suddenly implicitly
installed. And it is not sufficient that the patch is no longer required, as a
dependency solution could switch vendors and do other stuff that installs
packages from a repository other than the update repository.

Also note that there are three actions to account for:

https://github.com/openSUSE/open-build-service/blob/master/docs/api/api/patchinfo.rng

* reboot_needed
* relogin_needed
* zypp_restart_needed

The latter also triggers an installation of the zypper patches prior to all
others.

All of the above would make "zypper up" all but identical to "patch". :-) I
adjusted the summary to reflect the enhancement request.