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An alternative to pacman sudo nag?

Some pacman functions require sudo. When I forget the sudo, you get:

```
error: you cannot perform this operation unless you are root.
```

I then have to press the keys: `up, home, s, u, d, o, space, enter` to rerun with sudo. I find this irritating and it breaks my flow.

Is there a better solution here? If sudo is required for an operation, it should be run with sudo, rather than erroring out. In most situations where sudo is *dangerous*, it would prompt for a password anyway, so there's very little danger here. I have almost never ran pacman with sudo when I didn't mean to, but I have forgotten the sudo many times.

I could alias `pacman` to `sudo pacman`. However, some operations don't need sudo, like `-Q`. That alias would result in needless password prompts, which I also want to avoid.

How can I make pacman automatically use sudo when needed? I'd also like it to participate in sudo caching, so for example I don't want a situation like `systemctl` which automatically asks for sudo password when needed, but fails to remember it.