Multiple LHS values with indexing using math assignment operates on entire array
- ion revision: 04f7be9f
- expected behavior: indexed assignment only applies to the index position.
$ let a:[int] = [0 0 0]
$ let b:int = 0
$ let a[1] b += 1 1
$ echo @a
1 1 1 # [0 1 0] expected
$ echo $b
1