[herbstluftwm] Exclude any ‘.org’ files from wallpaper selection

herbstluftwm/.config/herbstluftwm/autostart

@@ -16,7 +16,8 @@ function random-wallpaper() {
     local height=$(echo $rootinfo | grep 'Height:' | sed 's/.*Height: \([[:digit:]]\+\).*/\1/')
 
     find ~/pictures/wallpaper -type f \
-        -wholename "*/${width}x${height}/*" -o -wholename '*/patterns/*' \
+         \( -wholename "*/${width}x${height}/*" -o -wholename '*/patterns/*' \) \
+         -not -name '*.org' \
         | shuf -n 1
 }