```ucm:hide
scratch/main> builtins.merge
```

```unison:hide
structural ability CLI where
  print : Text ->{CLI} ()
  input : {CLI} Text
```

```ucm:hide
scratch/main> add
```

The `input` here should parse as a wildcard, not as `CLI.input`.

```unison
repro : Text -> ()
repro = cases
  input -> ()
```