Error detected while processing function sideways#MoveLeft:
line 1:
E688: More targets than List items
line 2:
E121: Undefined variable: items
E116: Invalid arguments for function empty(items)
E15: Invalid expression: empty(items)
...
sideways.vim\autoload\sideways\parsing.vim, line 38:
when sideways#parsing#Parse return []:
sideways.vim\autoload\sideways\parsing.vim, line 38:
instead.