For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:sprattem/openSUSE_Tumbleweed/home:sprattem.repo
zypper refresh
zypper install emacs
For openSUSE Leap 42.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:sprattem/openSUSE_Leap_42.3/home:sprattem.repo
zypper refresh
zypper install emacs
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:sprattem/15.6/home:sprattem.repo
zypper refresh
zypper install emacs
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:sprattem/15.5/home:sprattem.repo
zypper refresh
zypper install emacs