diff --git a/tdrop b/tdrop
index 8ea9202..327a914 100755
--- a/tdrop
+++ b/tdrop
@@ -134,11 +134,11 @@ wm_autoset_for_both() {
 		# need to sleep first time to wait for window to be created
 		map_post_oneshot() {
 			sleep 0.1 && \
-			i3-msg "[id=$1] floating enable" && \
+			i3-msg "[id=$1] floating enable" > /dev/null && \
 			xdotool windowmove "$1" "$xoff" "$yoff" windowsize "$1" "$width" "$height"
 		}
 		map_post() {
-			i3-msg "[id=$1] floating enable" && \
+			i3-msg "[id=$1] floating enable" > /dev/null && \
 			xdotool windowmove "$1" "$xoff" "$yoff" windowsize "$1" "$width" "$height"
 		}
 	fi
@@ -214,7 +214,7 @@ map_pre_command() {
 	if [[ -n $map_pre ]]; then
 		eval "$map_pre"
 	# use automatically set function if exists
-	elif [[ -n $(type map_pre) ]]; then
+	elif [[ -n $(type map_pre 2> /dev/null) ]]; then
 		# needed when creating oneshot rules for programs where cmd differs from actual class name
 		if [[ $1 == "gnome-terminal" ]]; then
 			map_pre "Gnome-terminal"
@@ -227,11 +227,11 @@ map_pre_command() {
 map_post_command() {
 	if [[ -n $oneshot_post ]] && [[ $1 == oneshot ]]; then
 		eval "$oneshot_post"
-	elif [[ -n $(type map_post_oneshot) ]] && [[ $1 == oneshot ]]; then
+	elif [[ -n $(type map_post_oneshot 2> /dev/null) ]] && [[ $1 == oneshot ]]; then
 		map_post_oneshot "$2"
 	elif [[ -n $map_post ]]; then
 		eval "$map_post"
-	elif [[ -n $(type map_post) ]]; then
+	elif [[ -n $(type map_post 2> /dev/null) ]]; then
 		map_post "$1"
 	fi
 }
@@ -239,13 +239,13 @@ map_post_command() {
 unmap_post_command() {
 	if [[ -n $unmap_post ]]; then
 		eval "$unmap_post"
-	elif [[ -n $(type unmap_post) ]]; then
+	elif [[ -n $(type unmap_post 2> /dev/null) ]]; then
 		unmap_post
 	fi
 }
 
 maybe_cancel_auto_show() {
-	if $cancel_auto_show && [[ $1 == "$(< /tmp/tdrop/auto_hidden/wid)" ]]; then
+	if $cancel_auto_show && [[ $1 == "$(cat /tmp/tdrop/auto_hidden/wid 2> /dev/null)" ]]; then
 		> /tmp/tdrop/auto_hidden/wid
 	fi
 }
@@ -363,7 +363,7 @@ wid_toggle() {
 
 get_geometry() {
 	# so that won't float a tiled window later when showing
-	if [[ -n $(type is_floating) ]] && [[ -z $(is_floating "$1") ]]; then
+	if [[ -n $(type is_floating 2> /dev/null) ]] && [[ -z $(is_floating "$1") ]]; then
 		# window is not floating; don't bother saving geometry
 		echo "false"
 	else