Multi line substitute swapping sometimes doesn't work correctly

[svermeulen]

Given the following buffer with cursor at ^

^one
two
three
four

jim
joe
frank
fred

Execute yjjjyj to copy two multiline yanks to yoink history. Move cursor:

one
two
three
four

^jim
joe
frank
fred

Hit sj<c-n> to perform a substitute then swap. Notice the buffer now appears as:

one
two
three
four

jim
one
two
fred

When it should be:

one
two
three
four

one
two
frank
fred

[svermeulen]

This is because the vim undo operation does not always restore the cursor to the position it was before the operation took place, and the swapping logic assumes this. So I think we need to wait for neovim to fix this issue