Fix bugs on empty input

.config/shell/profile

@@ -16,6 +16,7 @@ export CHROME_EXECUTABLE=chromium # For Flutter
 export XDG_CACHE_HOME="${XDG_CACHE_HOME:-$HOME/.cache}"
 export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
 export XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
+export XDG_DATA_DIRS="${XDG_DATA_DIRS:-/usr/share}"
 
 # Clean home:
 export ANDROID_HOME="$XDG_DATA_HOME/Android/Sdk"
@@ -64,26 +65,27 @@ rm_env_path_entry() {
     del_entry="${2:?Missing entry to delete}"
     new_entries=""
 
-    echo "$src_entries" | $_tr ':' '\n' | while read -r entry; do
+    for entry in $(echo "$src_entries" | $_tr ':' ' '); do
         if [ "$entry" != "$del_entry" ]; then
             new_entries="$new_entries:$entry"
         fi
     done
 
-    trim "$new_entries" ":"
+    [ -n "$new_entries" ] && trim "$new_entries" ":"
+    echo
 }
 
 modify_env_path() {
     mode="${1:?Missing mode}"
-    entries="${2:?Missing entries}"
+    entries="$2"
     change="${3:?Missing change}"
 
-    entries="$(trim "$entries" ":")"
+    [ -n "$entries" ] && entries="$(trim "$entries" ":")"
 
     case "$mode" in
     prepend)
         temp_entries="" # Will hold the new entries in the correct order
-        echo "$change" | $_tr ':' '\n' | while read -r entry; do
+        for entry in $(echo "$change" | $_tr ':' ' '); do
             [ -z "$entry" ] && continue # Skip empty entries
             [ -d "$entry" ] || continue # Skip non-existent directories
             temp_entries="$temp_entries:$entry"
@@ -94,15 +96,16 @@ modify_env_path() {
         entries="${temp_entries#:}:$entries"
         ;;
     append)
-        echo "$change" | $_tr ':' '\n' | while read -r entry; do
+        for entry in $(echo "$change" | $_tr ':' ' '); do
             [ -z "$entry" ] && continue # Skip empty entries
             [ -d "$entry" ] || continue # Skip non-existent directories
             entries="$entries:$entry"
         done
         ;;
     delete)
-        echo "$change" | $_tr ':' '\n' | while read -r entry; do
+        for entry in $(echo "$change" | $_tr ':' ' '); do
             [ -z "$entry" ] && continue # Skip empty entries
+            [ -z "$entries" ] && break  # nothing left to remove
             entries=$(rm_env_path_entry "$entries" "$entry")
         done
         ;;
@@ -112,7 +115,8 @@ modify_env_path() {
         ;;
     esac
 
-    trim "$entries" ":"
+    [ -n "$entries" ] && trim "$entries" ":"
+    echo
 }
 
 prepend_paths="$HOME/.local/bin:$HOME/.cargo/bin:$FLUTTER_HOME/bin:$GOPATH/bin:$KREW_ROOT/bin"

.local/bin/xmonconf

@@ -65,14 +65,20 @@ monitor_exist() {
 # monitors_exist checks if the specified monitors are connected to the system
 # $1..$n: The monitor names to search for
 monitors_exist() {
-    local monitor
+    local monitor matches=0
 
     for monitor in "$@"; do
-        if ! monitor_exist "$monitor"; then
-            return 1
+        if monitor_exist "$monitor"; then
+            echo "$monitor"
+            matches=$((matches + 1))
         fi
     done
 
+    if [ "$matches" -ne "$#" ]; then
+        echo "Amount of devices does not match the amount of arguments" 1>&2
+        return 1
+    fi
+
     return 0
 }
 
@@ -285,7 +291,7 @@ move_nonexistent_i3_workspaces() {
 }
 
 main() {
-    local primary_monitor monitor_count monitors=() profile_found=false
+    local primary_monitor monitor_count monitors=() profile_found=false exists
     primary_monitor=$(get_monitors primary | cut -d',' -f1)
     monitor_count=$(get_monitors connected | wc -l)
     echo "Monitors connected: $monitor_count"
@@ -294,7 +300,7 @@ main() {
         echo "Applying laptop-only profile"
         xrandr --auto
         profile_found=true
-    elif usb_devices_exist all exact "HP, Inc HP USB-C Universal Dock" >/dev/null; then
+    elif usb_devices_exist all exact "HP, Inc HP USB-C Universal Dock" >/dev/null 2>&1; then
         monitors=(
             "eDP-1,DVI-I-1-1,DVI-I-2-2"
             "eDP-1,DVI-I-2-2,DVI-I-3-3"
@@ -302,8 +308,8 @@ main() {
 
         for monitor in "${monitors[@]}"; do
             IFS=',' read -r -a monitor_array <<<"$monitor"
-            if monitors_exist "${monitor_array[@]}"; then
-                echo "Applying dock profile for ${monitor_array[*]}"
+            if monitors_exist "${monitor_array[@]}" >/dev/null; then
+                echo "Applying work profile for ${monitor_array[*]}"
                 xrandr \
                     --output "${monitor_array[0]}" --mode 1920x1200 --rotate normal --pos 1200x1474 --primary \
                     --output "${monitor_array[1]}" --mode 1920x1200 --rotate left --pos 0x0 \
@@ -312,6 +318,15 @@ main() {
                 break
             fi
         done
+    elif usb_devices_exist all exact "Lenovo ThinkPad USB-C Dock Audio" >/dev/null 2>&1; then
+        monitor_array=(eDP-1 DP-1-0.3 DP-1-0.1)
+        if monitors_exist "${monitor_array[@]}" >/dev/null; then
+            echo "Applying home profile for ${monitor_array[*]}"
+            xrandr \
+                --output "${monitor_array[0]}" --mode 2560x1440 --rotate normal --pos 0x480 --primary \
+                --output "${monitor_array[1]}" --mode 3440x1440 --rotate normal --pos 2560x480 \
+                --output "${monitor_array[2]}" --mode 1920x1200 --rotate right --pos 6000x0
+        fi
     fi
 
     if ! "$profile_found"; then