-which is dead now and it's just confusing to need to add space at the
-end of the program name to prevent this. If you use rules that
-depend on this, like the old "udev_run_hotlugd" and "udev_run_devd",
-switch them to: RUN+="/bin/program $env{SUBSYSTEM}", otherwise
-they will no longer work as expected.
+which is dead now and it's just confusing to need to add a space at
+the end of the program name to prevent this.
+If you use rules that need the subsystem as the first parameter,
+like the old "udev_run_hotlugd" and "udev_run_devd", add the subsystem
+to the key like RUN+="/bin/program $env{SUBSYSTEM}".