diff --git a/local/bin/x-clean-vendordirs b/local/bin/x-clean-vendordirs
index 4f1fa48..6b880ff 100755
--- a/local/bin/x-clean-vendordirs
+++ b/local/bin/x-clean-vendordirs
@@ -7,13 +7,15 @@
 # Author: Ismo Vuorinen 2025
 # License: MIT
 
+set -euo pipefail
+
 # Check if the user has provided a directory as an argument
-if [ "$1" ]; then
+if [ "${1:-}" ]; then
   # Check if the directory exists
   if [ -d "$1" ]; then
     CLEANDIR="$1"
   else
-    msgr err "Directory $1 does not exist."
+    echo "Error: Directory $1 does not exist." >&2
     exit 1
   fi
 else
@@ -27,7 +29,7 @@ remove_node_modules_vendor()
 
   # If the directory is a symlink, skip it
   if [ -L "$dir" ]; then
-    msgr msg "Skipping symlink $dir"
+    echo "Skipping symlink $dir"
     return
   fi
 
@@ -35,18 +37,18 @@ remove_node_modules_vendor()
   if [ -d "$dir" ]; then
     # If node_modules or vendor folder exists, remove it and all its contents
     if [ -d "$dir/node_modules" ]; then
-      msgr run "Removing $dir/node_modules"
+      echo "Removing $dir/node_modules"
       rm -rf "$dir/node_modules"
     fi
 
     if [ -d "$dir/vendor" ]; then
-      msgr run "Removing $dir/vendor"
+      echo "Removing $dir/vendor"
       rm -rf "$dir/vendor"
     fi
 
     # Recursively check subdirectories
     for item in "$dir"/*; do
-      remove_node_modules_vendor "$item"
+      [ -d "$item" ] && remove_node_modules_vendor "$item"
     done
   fi
 }
diff --git a/local/bin/x-foreach b/local/bin/x-foreach
index a2a84e2..76fe5b9 100755
--- a/local/bin/x-foreach
+++ b/local/bin/x-foreach
@@ -1,18 +1,26 @@
 #!/usr/bin/env bash
 #
-# foreach <folder> <commands that should be run to each file>
-# foreach "ls -d */" "git status" # run git status in each folder
+# Run a command in each directory matching a pattern.
+#
+# Usage: x-foreach <listing-command> <command> [args...]
+#   x-foreach "ls -d */" "git status"
 #
 # Source: https://github.com/mvdan/dotfiles/blob/master/.bin/foreach
 
-cmd=$1
+set -euo pipefail
+
+if [ $# -lt 2 ]; then
+  echo "Usage: $0 <listing-command> <command> [args...]"
+  exit 1
+fi
+
+listing=$1
 shift
 
-for dir in $($cmd); do
+for dir in $(eval "$listing"); do
   (
     echo "$dir"
     cd "$dir" || exit 1
-    # shellcheck disable=SC2294,SC2034
-    eval "$@" # allow multiple commands like "foo && bar"
+    "$@"
   )
 done
diff --git a/local/bin/x-ip b/local/bin/x-ip
index ec35544..83e808c 100755
--- a/local/bin/x-ip
+++ b/local/bin/x-ip
@@ -1,4 +1,14 @@
 #!/usr/bin/env bash
+#
+# Display external IP address.
+#
 # Source: https://github.com/thirtythreeforty/dotfiles/blob/master/bin/extip
 
-curl icanhazip.com "${@}"
+set -euo pipefail
+
+if ! command -v curl &> /dev/null; then
+  echo "Error: curl is required" >&2
+  exit 1
+fi
+
+curl -sf icanhazip.com