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

Calculating dependencies ... done!
Dependency resolution took 1.51 s (backtrack: 0/20).

[ebuild     U  ] sys-apps/groff-1.23.0-r2::gentoo [1.23.0-r1::gentoo] USE="X -examples -uchardet" 7259 KiB

Total: 1 package (1 upgrade), Size of downloads: 7259 KiB