Should these be separated with an `=`?  Also should the names be the same casing found in the model?  It would be more consistent with how we treat the shorthand syntax (even though I realize this isn't shorthand):

```
---shorthand-param Foo=BarValue

--headers ContentType=text/plain
```

It looks like we're currently relying on the fact that the param name can be programatically determined from the `location_name` which might not always be the case.