If it should be what are you looking out for?

I assumed it should be, but the implementation <del>sucks</del> is suboptimal, it should be something like:

```
which uf && complete -C 'uf commands'
```

I.e. _if_ there is a `uf` command on this system _then_ setup completions for it. All lines assume something (like the `uf` command being there) should be guarded by checks that ensure the assumption is valid first