[arch-general] How do you extract version from pacman?

[Oon-Ee Ng]

With the new virtualbox update I had to obtain virtualbox version in a
script (and of course, virtualbox binary doesn't have a sane --version
parameter...).

Anyway, its pretty simple to pacman -Qi virtualbox | grep -e
"^Version" | awk '{print $3}' | sed 's|-.||'

Perhaps it may be nice to have a pacman flag to obtain just the
version string. I'll file a feature request, but before that anyone
has an comments on why it would be useless or a bad idea?