Sorry, this isn't clear: I wanted to separate between these two possible alignments:

```
foo <- function_call(
         a,
         b,
         c
)
```

and

```
foo <- function_call(
  a,
  b,
  c
)
```

Which is made apparent if you try switching the parameter on and off, and testing the alignment. But the parameter name is, once again, not great -- perhaps it should be `ess-vertically-align-continued-statement-on-R-assignment-operator` or something. Naming things is hard.