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

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

[ebuild  N     ] app-text/wdiff-1.2.2-r2::gentoo  USE="-experimental -test" 1444 KiB

Total: 1 package (1 new), Size of downloads: 1444 KiB