These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] gnome-extra/gnome-user-docs-50.5::gentoo  USE="-test" 17970 KiB

Total: 1 package (1 new), Size of downloads: 17970 KiB