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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/IO-stringy-2.113.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 47 KiB
[ebuild  N     ] dev-perl/MIME-tools-5.517.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 416 KiB
[ebuild  N     ] dev-perl/Convert-TNEF-0.180.0-r3::gentoo  PERL_FEATURES="ithreads (-debug) -quadmath" 13 KiB

Total: 3 packages (3 new), Size of downloads: 474 KiB