Updating AUR package with pacman

[Thorsten Jolitz <tjolitz@xxxxxxxxxxxxxx>]

Hi List, 

when I want to install a new version from an already installed AUR
package - do I have to remove the old version first, or do I simply
follow the same steps as if there would be no old version on my machine
and pacman takes care of everything?

-- 
cheers,
Thorsten