Hi, I just want to make sure, so we need to implement this operator in C code right? And for the operation behaviour, there's something that's not clear.
Is it only working for continuous selection or it can work in any condition? If we select disjoint selection, what will happen? And should be the edge produced by the extrude be straight, or it keeps the handle like before, or there's some adjustment for the handle?
From the python code above, I can see that he use subdivision operator to create a new node, and if I remember correctly, the subdivision change the handle position. I wonder if it's a wanted behaviour.