Don't overwrite $wm with another DE variable if the first one worked

also known as the foot DE

README.md

@@ -9,6 +9,7 @@ fetch written in POSIX shell with no external commands
 **Arch:** [fet.sh-git](https://aur.archlinux.org/packages/fet.sh-git/) (AUR)  
 **Nix:** [fet-sh](https://search.nixos.org/packages?show=fet-sh&query=fet-sh&channel=unstable) (nixpkgs-unstable)  
 **Gentoo:** [app-misc/fetsh](https://gpo.zugaina.org/Overlays/guru/app-misc/fetsh) (GURU overlay)  
+**KISS:** [fetsh](https://github.com/kisslinux/community/tree/master/community/fetsh) (Community)  
 **Other Distros:** copy `fet.sh` to somewhere in $PATH
 
 ### Customization

fet.sh

@@ -17,7 +17,7 @@ eq() {  # equals  |  [ a = b ] with globbing
 
 ## DE
 wm="$XDG_CURRENT_DESKTOP"
-wm="$DESKTOP_SESSION"
+[ "$wm" ] || wm="$DESKTOP_SESSION"
 
 ## Distro
 # freedesktop.org/software/systemd/man/os-release.html
@@ -36,8 +36,13 @@ if [ -e /proc/$$/comm ]; then
 			eq "$line" "PPid*" && ppid=${line##*:?} && break
 		done < "/proc/${ppid:-$PPID}/status"
 
+		# Make sure not to do an infinite loop
+		[ "$pppid" = "$ppid" ] && break
+		pppid="$ppid"
+
 		# get name of binary
 		read -r name < "/proc/$ppid/comm"
+
 		case $name in
 			*sh|"${0##*/}") ;;  # skip shells
 			*[Ll]ogin*|*init*) break;;  # exit when the top is reached
@@ -46,14 +51,12 @@ if [ -e /proc/$$/comm ]; then
 	done
 
 	## WM/DE
-	# standard variables, mostly used for DEs
-	[ "$DISPLAY" ] && [ ! "$wm" ] &&
-		# non-standard WMs
+	[ ! "$wm" ] &&
 		# loop over all processes and check the binary name
 		for i in /proc/*/comm; do
 			read -r c < "$i"
 			case $c in
-				awesome|xmonad*|qtile|sway|i3|*box*|*wm*) wm="${c%%-*}"; break;;
+				awesome|xmonad*|qtile|sway|i3|[bfo]*box|*wm*) wm="${c%%-*}"; break;;
 			esac
 		done
 
@@ -94,6 +97,7 @@ if [ -e /proc/$$/comm ]; then
 	set --
 	[ -d /var/db/kiss/installed ] && set -- /var/db/kiss/installed/*
 	[ -d /var/lib/pacman/local  ] && set -- /var/lib/pacman/local/[0-9a-z]*
+	[ -d /var/lib/dpkg/info ] && set -- /var/lib/dpkg/info/*.list
 	[ -d /var/db/xbps ] && set -- /var/db/xbps/.*
 	[ -d /var/db/pkg  ] && set -- /var/db/pkg/*/*  # gentoo
 	pkgs=${###0}
@@ -198,6 +202,9 @@ fi
 
 eq "$0" "*fetish" && printf 'Step on me daddy\n' && exit
 
+# help i dont know if it's a capital consistently
+eq "$wm" "*[Gg][Nn][Oo][Mm][Ee]*" && wm="foot DE"
+
 ## GTK
 while read -r line; do
 	eq "$line" "gtk-theme*" && gtk="${line##*=}" && break