Villager trading involving two object inputs, one of them being emeralds, now require only the non emerald input. For Example, a village previously accepting a book and 48 emeralds, and returning sharpness IV, now accepts just a book and returns an enchanted book. This is the case for enchanted tools (pick axe, sword), as well as for trades of gravel and emeralds for flint.
Duplicate of MC-29498