Idea: Swap words/symbols below two cursors

[dschrempf]

I recently saw someone doing this in another editor, and it is pretty neat, for example, to swap arguments of a function call.

| is cursor position.

(W|ordA, W|ordB)

-> execute evil-mc-swap-word

(W|ordB, W|ordA)

For multiple cursors, one could implement evil-mc-rotate-X functions.