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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/md4c-0.5.3::gentoo  USE="md2html -test" 239 KiB

Total: 1 package (1 new), Size of downloads: 239 KiB