in the 18w snapshots this command was working /give @a minecraft:iron_chestplate{Unbreakable:1,Damage:0,ench:[{id:0,lvl:1}]} 1 it still gives the unbreakable chestplate but with no enchants on it
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This is because you have to do " /give @a minecraft:iron_chestplate{Unbreakable:1,Damage:0,Enchantments:[
{id:(name of the enchantment, not the ID),lvl:1}]} 1"