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

Calculating dependencies ... done!
Dependency resolution took 1.09 s (backtrack: 0/20).

[ebuild  N     ] app-text/wdiff-1.2.3::gentoo  USE="-experimental -test" 1670 KiB

Total: 1 package (1 new), Size of downloads: 1670 KiB