A bit late reaction on this question… FYI…
>>> which checkupdates-with-aur
/usr/bin/checkupdates-with-aur
~
>>> cat /usr/bin/checkupdates-with-aur
#!/bin/sh
checkupdates &
pacman -Qm | aur vercmp &
wait
~
>>> yay checkupdates-with-aur
1 aur/checkupdates-with-aur 1.0-1 (+5 0.49) (Installed)
Helper script to check updates, including AUR updates
==> Packages to install (eg: 1 2 3, 1-3 or ^4)
==>
there is nothing to do
~
>>>
