make auto_show mantain previous window position

Originally tried parsing xwininfo's -geometry section output with awk, but signs (+/-) change depending on window position.
Instead, subtract relative from absolute if they are different.
On window managers with decorations/borders they will be different.

tdrop

@@ -194,10 +194,28 @@ auto_hide() {
 		mkdir -p /tmp/tdrop/auto_hidden
 		echo "$wid" > /tmp/tdrop/auto_hidden/wid
 		get_class_name > /tmp/tdrop/auto_hidden/class
+		wininfo=$(xwininfo -id "$wid")
+		# save window position
+		x=$(echo "$wininfo" | awk '/Absolute.*X/ {print $4}')
+		y=$(echo "$wininfo" | awk '/Absolute.*Y/ {print $4}')
+		rel_x=$(echo "$wininfo" | awk '/Relative.*X/ {print $4}')
+		rel_y=$(echo "$wininfo" | awk '/Relative.*Y/ {print $4}')
+		if [[ $x -ne $rel_x ]]; then
+			x=$((x-rel_x))
+		fi
+		if [[ $y -ne $rel_y ]]; then
+			y=$((y-rel_y))
+		fi
+		echo -e "X=$x\nY=$y" > /tmp/tdrop/auto_hidden/geometry
 		xdotool windowunmap "$wid"
 	fi
 }
 
+geometry_set() {
+	eval "$(< /tmp/tdrop/auto_hidden/geometry)"
+	xdotool windowmove "$1" "$X" "$Y"
+}
+
 auto_show() {
 	no_hide=$(< /tmp/tdrop/auto_hidden/no_hide)
 	if [[ -z $no_hide ]]; then
@@ -206,6 +224,7 @@ auto_show() {
 		float_pre_command "$class"
 		xdotool windowmap "$wid"
 		float_post_command "$wid"
+		geometry_set "$wid"
 	fi
 }