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

Calculating dependencies ... done!
Dependency resolution took 1.06 s (backtrack: 0/20).

[ebuild  N     ] sys-apps/ed-1.22.5::gentoo  USE="-verify-sig" 70 KiB
[ebuild  N     ] dev-vcs/rcs-5.10.1-r1::gentoo  USE="-doc" 896 KiB
[ebuild  N     ] app-admin/filewatcher-2.4.6-r1::gentoo  37 KiB

Total: 3 packages (3 new), Size of downloads: 1003 KiB