adding c:coal to the #minecraft:coals tag is breaking some of my recipes

https://github.com/FabricMC/fabric/blob/1.21.1/fabric-convention-tags-v2/src/generated/resources/data/c/tags/item/coal.json

This is causing the c:coal tag to be added to charcoal and coal coke items from other mods I have. It breaks the recipes that use the c:charcoal and c:coal_coke tags. To fix that, you just have to unappend the c:coal from the #minecraft:coals tag and instead add the minecraft:coal item.

Could you make it this instead?

{
"values": [
{
"id": "minecraft:coal",
"required": false
}
]
}

I think the tag contents are correct. A better solution for recipes is to take minecraft:coal directly if you only want it to work with that item, or to use difference ingredients:

The problem that I have is due to c:coal being automatically attached to the mineacraft:coals tag.
This causes charcoal, and any other item that used the Minecraft:coals to inherit the c;coal tag.

I use a unification mod to merge duplicate items from the game, and due to that, charcoal (and other items that use mineacraft:coals ) get removed from the game due to inheriting the c:coal tag. Basically, burning logs result into coal being produced. Coal Coke is removed from the game due to this. A lot of problems arise due to this.

btw: the mods that add those other coal types, name those coals with c:charcoal and c:coal_coke tags to use.
Now due to how c:coal is being inherited, it gets added to those other coal types.