No clay?

[j-r]

I'm probably too stupid, but it seems like commit 2e0c7a1 removed generation of clay. There is still an alias to mapgen_clay, but since default:clay does not exist it doesn't do anything AFAICT.

[HybridDog]

I think so, too.
I used grep to search for clay:

./mods/grounds/init.lua
./mods/grounds/dirt.lua
./mods/default/init.lua
./mods/default/mapgen.lua
./mods/metals/init.lua
./mods/core/legacy.lua

and for on_generated:

./mods/trees/init.lua
./mods/default/mapgen.lua
./mods/ores/generation.lua
./mods/icicles/init.lua

and at ./mods/default/mapgen.lua there's just an alias

[Kotolegokot]

I affirm the bug.