Why is water diggable?

[BF5258]

In versions 1.19 and 1.20 water and lava are marked as diggable. This cause mineflayer-collect block to try to mine them.

My understanding is that "diggable" means able to be broken in survival by mining. If this is not the case, please explain.

[rom1504]

yes we need to agree on the definition and fix it, can you look into it?

[BF5258]

minecraft-data-generator considers any non-air block with finite hardness to be diggable. (BlocksDataGenerator.java)

Water and lava both have a finite hardness but cannot be targeted. (minecraft.wiki)

Checking for water and lava as well as air should fix it, but I am unfamiliar with Java.

[BF5258]

Although they can only be mined by vanilla clients using bugs, the server seems to consider bubble columns to be mineable. They are placed back almost immediately but do cause block updates.

2025-01-31_18-04-56.mp4

Water and lava also seem to be minable but in 1.21 they are replaced by themselves, resulting in no change.
waterlogged slab -> waterlogged water + slab item
waterlogged water -> waterlogged water (no drop)
It might be possible to break liquids in versions before waterlogging was added.