https://devmanual.gentoo.org/eclass-reference/xdg-utils.eclass/ FUNCTIONS [..] fdo-xdg_desktop_database_update Updates the .desktop files database. Generates a list of mimetypes linked to applications that can handle them [..]
commit 1b62e7745ff3a741d503b0e7f5724f9572f8e8a6 Author: Tim Harder <radhermit@gentoo.org> Date: Mon Aug 21 17:14:16 2017 -0400 xdg-utils.eclass: fix xdg_desktop_database_update function doc typo