Java Edition 12w41a

12w41a is the twelfth snapshot released for 1.4.2.

Additions

 * Added a new Anvil Block for repairing, merging & naming items.
 * Three different damage states: Anvil, Slightly Damaged Anvil, and Very Damaged Anvil.
 * Anvils can not only rename tools and armor, but any item.
 * Renamed placeable items will not retain their name if placed.
 * Anvils can merge enchantments
 * Items with two different enchantments will give an item with both
 * Items with the same enchantment will increase the level of the enchantment if they have the same level or take only the highest if they don't
 * Some enchantments can be lost during the merging because of incompatibility (ex: Sharpness I + Smite I)
 * The first item seems to have the priority (the lost enchantments are on the second item)
 * Anvils can also be dropped in a similar manner to Sand, Gravel, and Dragon Eggs.
 * When landing on a mob, the anvil will deal damage relative to the distance it fell.
 * Creepers now can have custom explosion radius and fuse timer using edited mob spawners and NBT tags.

Changes

 * Renamed "Chat Settings" to "Multiplayer Settings".
 * Contains the old chat settings menu.
 * Option for cape-owners to hide their capes ingame.
 * Tweaks to debugging
 * F3+H now shows tool and armor durability on damaged items – On maps it shows the zoom level.
 * Now shows which cardinal direction the player is facing on the f value.
 * The pie chart on the F3 overlay is now shown when opening it using shift+F3 instead of vice versa.
 * Mobs no longer forget that they are aggressive against a player in Creative mode after a few seconds anymore.
 * Potion-like effects given by the Beacon now use semi-transparent particles, to be less intrusive.
 * Normal potions remain unchanged.
 * Level-up sound now only plays every 5 levels and has been tweaked.
 * Experience can now be gained by breeding animals

Fixes
4 bugs fixed


 * When placing the Anvil in mid air in a certain orientation the entity will be sideways until it lands.
 * Breaking the block under any Anvil resets it to a regular Anvil.
 * When using the /kill command an error appears, when holding a block it gives the normal message but you don't die.
 * When in a multiplayer server and trying to rename an item, if entire name is erased the client will crash.