I often have to compare different function nodes (within the same tab or different tabs) in order to find their differences out, and transfer some of the differences from one to the other.
Actually the easiest way to do this is to copy/paste their code in an external diff tool, find the differences, manually merge them by copying pieces to a final version, and finally paste the result back into the flow.
I think that an integrated tool to do so would help a lot and save much time.
I'm thinking about a classic diff/merge UI, with side-by-side contents, visually highlighted differences (added lines in green, removed lines in red, changed lines in blue or another color), and commands to transfer changes right-to-left or left-to-right.
Thanks for your attention!