Describe the feature you'd like

Creative tab allows you to press an inventory slot keybind on top of an item, and it will give you a stack of said item in the said slot.

Since it's more comfortable to search for items using REI, how about simulate a similar behavior instead of just raw giving you the item?

Describe alternatives you've considered

No response

Additional context

No response

Minecraft version

No response

Modloader

All

Either I'm misunderstanding this, or you meant to make this issue on the REI issue tracker.

This feature has nothing to do with CraftTweaker.