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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Algorithm-Diff-1.201.0::gentoo  USE="-examples" PERL_FEATURES="ithreads (-debug) -quadmath" 30 KiB
[ebuild  N     ] dev-perl/Text-Diff-1.450.0-r1::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 29 KiB
[ebuild  N     ] dev-perl/Test-Snapshot-0.61.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 8 KiB

Total: 3 packages (3 new), Size of downloads: 66 KiB