Do Librarians sell custom enchantment books by default?

[FenrisFox86]

I'm creating a Mod that contains a Lot of new Enchantments, some of which are treasure enchantments. And as everybody knows, Villagers also trade with treasure enchants and that is one of the fastest ways to get your hands on a mending book.

Since enchantment generation in the Enchanting Table is automatically done by the game without having to create something like a "enchantment recipe", I started asking myself if my Enchantments are also automatically applied to dungeon loot, Villager Trades and Fishing outputs. That would save me a lot of work. 

Edited July 8, 2021 by FenrisFox86

[Luis_ST]

18 minutes ago, FenrisFox86 said:

I started asking myself if my Enchantments are also automatically applied to dungeon loot, Villager Trades and Fishing outputs. That would save me a lot of work. 

villager can trade an enchantment, if the method Enchantment#isTradeable returns true
a LootTable can contain the enchantment, if the method Enchantment#isDiscoverable returns true

both methods return true by default

Edited July 8, 2021 by Luis_ST

[FenrisFox86]

Ah thanks! That's even more useful simple customisation options than I expected.