I dunno, like spears do not extend from SwordItem so that makes difficult to workaround for other mods like quark to avoid damaging your own pets.

In this case is even more anoying since you attack with the spear while mounting a horse and your attacks almost always damage them.

Any solution to avoid it?

I'll add this to the list, shouldnt be too difficult.

thx! do you have any clues for me to implement, im playing on 1.16

What do you mean?

I just tested, spears do not damage mounted entities.

proof

yes, in 1.16 it does. Will check what I can do

1.16 is no longer supported