Show only "really" unique items

dotfiles/i3/config

 bindsym $mod+m              exec "saturnin conf -j -S -s dmenu.item | saturnin dmenu --split = | bash -"
 bindsym $mod+Shift+m        exec "i3-dmenu-desktop --dmenu='saturnin dmenu'"
 bindsym $mod+p              exec "dmenu_path | saturnin dmenu | bash -"
-bindsym $mod+Shift+p        exec "tac .dmenu_history | uniq | saturnin dmenu | tee -a .dmenu_history | bash -"
+bindsym $mod+Shift+p        exec "tac .dmenu_history | awk '!seen[$0]++' | saturnin dmenu | tee -a .dmenu_history | bash -"
 
 bindsym $mod+n              exec "saturnin kb next"
 bindsym $mod+Shift+n        exec "saturnin kb home"