`\d` (describe) does not work unscoped or with a table name

This is supposed to return a list of tables:

```
employees=> \d
ERROR: syntax error at position 666 near 'nspname' (errno 1105) (sqlstate HY000)
```

This is supposed to describe said table.

```
employees=> \d employees
ERROR: syntax error at position 158 near 'OPERATOR' (errno 1105) (sqlstate HY000)
```