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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libunibreak-8.0:0/8::gentoo  USE="-doc -man -static-libs -test" 1063 KiB
[ebuild  N     ] dev-libs/libutf8proc-2.12.0:0/2.12.0::gentoo  USE="-cjk -static-libs -test" 200 KiB
[ebuild  N     ] app-text/crengine-ng-0.9.13-r1:0/0.9.13::gentoo  USE="chm fontconfig fribidi gif harfbuzz jpeg libunibreak libutf8proc png zstd -static-libs -svg -test -webp" 4281 KiB

Total: 3 packages (3 new), Size of downloads: 5544 KiB