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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] x11-misc/xorg-cf-files-1.0.9::gentoo  171 KiB
[ebuild  N     ] x11-misc/imake-1.0.10::gentoo  152 KiB
[ebuild  N     ] x11-wm/treewm-0.4.5-r2::gentoo  86 KiB

Total: 3 packages (3 new), Size of downloads: 408 KiB