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

Calculating dependencies ... done!
Dependency resolution took 1.53 s (backtrack: 0/20).

[ebuild     UD ] app-text/mandoc-1.14.6::gentoo [1.14.6-r1::gentoo] USE="-cgi (-selinux) -system-man -test" 681 KiB

Total: 1 package (1 downgrade), Size of downloads: 681 KiB