Describe the feature you'd like

You would basically use it like this:
craftingtable.addRegexTagRecipeShapeless( item:minecraft:.*planks [item:.*log]);

Describe alternatives you've considered

None, or maybe just adding the recipes by hand (boring).

Additional context

dont know how to explain it further

Minecraft version

1.16

You here ?

I dont think we understand themselves

I meant it otherwise

I mentioned it on discord

It has also other context

go discord, don't send some of this spam, thanks

Should i add aditional context ?

That is not how recipes work.

Even if I found a way to implement this it would be horribly slow and slow down all shapeless recipe crafting.

Just use tags and ingredient lists.