In both sys-apps/portage-2.2.26 and sys-apps/portage-2.2.27 `man 1 emaint` states: emaint - performs package managment related system health checks and maintenance Please s/managment/management/
Typo still present in sys-apps/portage-2.2.28
Fix sent to https://archives.gentoo.org/gentoo-portage-dev/message/18efcc138ff4177d67e130c8f9c41c36
Thanks, this is in the master branch: https://gitweb.gentoo.org/proj/portage.git/commit/?id=a29847f77d57f2c423c30b931fa40e65523795c4
Fixed in portage-2.3.5.