Got it. Added a method to return the node count of a nodepath. Now when a node delete leaves <2 nodes, it considered the same as if the whole thing was deleted.

Tried both node_delete() and node_delete_segment() with <2, 2, and >2 nodes. Seems to work OK. Looked in the XML and didn't see any phantoms.

Thank you, that works well. Although I would prefer the node tool to still be able to handle one-node path, and only delete it when you switch away from the node tool. So that e.g. I can leave one node and "draw" from it by pressing shift-d and arrow keys repeatedly. But perhaps it's not worth the extra trouble, and at least it's safer as you implemented it.

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