Indenting of function arguments

Hi.

There's a case where the indentation is not what I would expect.

For example, I get the following indentation:
```
a(
b(
c(
)
)
)
```

But I get this indentation for similar code:
```
a($o
->b($o
->c(
)
)
)
```
The first argument list gets indented by the following ones use the same indentation level.

I expected this:
```
a($o
->b($o
->c(
)
)
)
```

Is that possible?

Thanks for your work.