diff --git a/bin/omarchy-cmd-missing b/bin/omarchy-cmd-missing
index 470d69c3..2b48be81 100755
--- a/bin/omarchy-cmd-missing
+++ b/bin/omarchy-cmd-missing
@@ -3,7 +3,7 @@
 # omarchy:summary=Check whether any required commands are missing
 
 for cmd in "$@"; do
-  if ! command -v "$cmd" &>/dev/null; then
+  if ! command -v -- "$cmd" &>/dev/null; then
     exit 0
   fi
 done
diff --git a/bin/omarchy-cmd-present b/bin/omarchy-cmd-present
index 4e758760..57b05102 100755
--- a/bin/omarchy-cmd-present
+++ b/bin/omarchy-cmd-present
@@ -3,7 +3,7 @@
 # omarchy:summary=Check whether all required commands are available
 
 for cmd in "$@"; do
-  command -v "$cmd" &>/dev/null || exit 1
+  command -v -- "$cmd" &>/dev/null || exit 1
 done
 
 exit 0
diff --git a/bin/omarchy-hook-install b/bin/omarchy-hook-install
index 7c536482..3eb1197a 100755
--- a/bin/omarchy-hook-install
+++ b/bin/omarchy-hook-install
@@ -16,7 +16,7 @@ fi
 HOOK_TYPE=$1
 HOOK_FILE=$2
 HOOK_DIR="$HOME/.config/omarchy/hooks/$HOOK_TYPE.d"
-HOOK_NAME=$(basename "$HOOK_FILE")
+HOOK_NAME=$(basename -- "$HOOK_FILE")
 HOOK_PATH="$HOOK_DIR/$HOOK_NAME"
 
 if [[ ! -f $HOOK_FILE ]]; then
@@ -25,7 +25,7 @@ if [[ ! -f $HOOK_FILE ]]; then
 fi
 
 mkdir -p "$HOOK_DIR"
-cp "$HOOK_FILE" "$HOOK_PATH"
+cp -- "$HOOK_FILE" "$HOOK_PATH"
 chmod 755 "$HOOK_PATH"
 
 echo "Installed $HOOK_TYPE hook: $HOOK_PATH"
diff --git a/bin/omarchy-hw-match b/bin/omarchy-hw-match
index 318ca7e8..cecca3b0 100755
--- a/bin/omarchy-hw-match
+++ b/bin/omarchy-hw-match
@@ -3,5 +3,5 @@
 # omarchy:summary=Match against the computer's DMI product name or product family (case-insensitive).
 # omarchy:args=<pattern>
 
-grep -qi "$1" /sys/class/dmi/id/product_name 2>/dev/null ||
-grep -qi "$1" /sys/class/dmi/id/product_family 2>/dev/null
+grep -qi -- "$1" /sys/class/dmi/id/product_name 2>/dev/null ||
+grep -qi -- "$1" /sys/class/dmi/id/product_family 2>/dev/null
diff --git a/bin/omarchy-launch-editor b/bin/omarchy-launch-editor
index 8a69dabd..926e75d1 100755
--- a/bin/omarchy-launch-editor
+++ b/bin/omarchy-launch-editor
@@ -23,12 +23,12 @@ omarchy-cmd-present "$editor" || editor="nvim"
 case "${editor##*/}" in
 nvim | vim | nano | micro | hx | helix | fresh)
   if [[ $inline == "true" ]]; then
-    exec "$editor" "$@"
+    exec "$editor" -- "$@"
   else
-    exec omarchy-launch-tui "$editor" "$@"
+    exec omarchy-launch-tui "$editor" -- "$@"
   fi
   ;;
 *)
-  exec setsid uwsm-app -- "$editor" "$@"
+  exec setsid uwsm-app -- "$editor" -- "$@"
   ;;
 esac
diff --git a/bin/omarchy-pkg-add b/bin/omarchy-pkg-add
index 977d7efd..1f5e4091 100755
--- a/bin/omarchy-pkg-add
+++ b/bin/omarchy-pkg-add
@@ -7,15 +7,15 @@
 
 if omarchy-pkg-missing "$@"; then
   if (( EUID == 0 )); then
-    pacman -S --noconfirm --needed "$@" || exit 1
+    pacman -S --noconfirm --needed -- "$@" || exit 1
   else
-    sudo pacman -S --noconfirm --needed "$@" || exit 1
+    sudo pacman -S --noconfirm --needed -- "$@" || exit 1
   fi
 fi
 
 for pkg in "$@"; do
   # Secondary check to handle states where pacman doesn't actually register an error
-  if ! pacman -Q "$pkg" &>/dev/null; then
+  if ! pacman -Q -- "$pkg" &>/dev/null; then
     echo -e "\033[31mError: Package '$pkg' did not install\033[0m" >&2
     exit 1
   fi
diff --git a/bin/omarchy-pkg-aur-add b/bin/omarchy-pkg-aur-add
index 7a152be7..64ad097c 100755
--- a/bin/omarchy-pkg-aur-add
+++ b/bin/omarchy-pkg-aur-add
@@ -4,12 +4,12 @@
 # omarchy:args=<packages...>
 
 if omarchy-pkg-missing "$@"; then
-  yay -S --noconfirm --needed "$@" || exit 1
+  yay -S --noconfirm --needed -- "$@" || exit 1
 fi
 
 for pkg in "$@"; do
   # Secondary check to handle states where pacman doesn't actually register an error
-  if ! pacman -Q "$pkg" &>/dev/null; then
+  if ! pacman -Q -- "$pkg" &>/dev/null; then
     echo -e "\033[31mError: Package '$pkg' did not install\033[0m" >&2
     exit 1
   fi
diff --git a/bin/omarchy-pkg-missing b/bin/omarchy-pkg-missing
index c4059dff..b282d2f3 100755
--- a/bin/omarchy-pkg-missing
+++ b/bin/omarchy-pkg-missing
@@ -4,7 +4,7 @@
 # omarchy:args=<packages...>
 
 for pkg in "$@"; do
-  if ! pacman -Q "$pkg" &>/dev/null; then
+  if ! pacman -Q -- "$pkg" &>/dev/null; then
     exit 0
   fi
 done
diff --git a/bin/omarchy-pkg-present b/bin/omarchy-pkg-present
index 8c4340d6..0a0645bd 100755
--- a/bin/omarchy-pkg-present
+++ b/bin/omarchy-pkg-present
@@ -4,7 +4,7 @@
 # omarchy:args=<packages...>
 
 for pkg in "$@"; do
-  pacman -Q "$pkg" &>/dev/null || exit 1
+  pacman -Q -- "$pkg" &>/dev/null || exit 1
 done
 
 exit 0
diff --git a/bin/omarchy-restart-app b/bin/omarchy-restart-app
index d250650d..e7d7ce5d 100755
--- a/bin/omarchy-restart-app
+++ b/bin/omarchy-restart-app
@@ -3,5 +3,5 @@
 # omarchy:summary=Restart an application by killing it and relaunching via uwsm.
 # omarchy:args=<application-name> [application-args...]
 
-pkill -x $1
+pkill -x -- "$1"
 setsid uwsm-app -- "$@" >/dev/null 2>&1 &
diff --git a/test/shell.d/command-operand-boundaries-test.sh b/test/shell.d/command-operand-boundaries-test.sh
new file mode 100755
index 00000000..652b1ce7
--- /dev/null
+++ b/test/shell.d/command-operand-boundaries-test.sh
@@ -0,0 +1,259 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+export OMARCHY_PATH="$ROOT"
+
+if "$ROOT/bin/omarchy-cmd-present" -p; then
+  fail "cmd-present treats an option-shaped command name literally"
+fi
+pass "cmd-present treats an option-shaped command name literally"
+
+"$ROOT/bin/omarchy-cmd-missing" -p ||
+  fail "cmd-missing treats an option-shaped command name literally"
+pass "cmd-missing treats an option-shaped command name literally"
+
+"$ROOT/bin/omarchy-cmd-present" bash || fail "cmd-present still finds an ordinary command"
+pass "cmd-present still finds an ordinary command"
+
+test_tmp=$(mktemp -d)
+trap 'rm -rf "$test_tmp"' EXIT
+
+mock_bin="$test_tmp/bin"
+mkdir -p "$mock_bin"
+
+cat >"$mock_bin/pacman" <<'STUB'
+#!/bin/bash
+
+if [[ -n ${OMARCHY_TEST_PACKAGE_CALLS:-} ]]; then
+  {
+    printf 'pacman'
+    printf ' <%s>' "$@"
+    printf '\n'
+  } >>"$OMARCHY_TEST_PACKAGE_CALLS"
+fi
+
+if [[ $1 == "-S" ]]; then
+  exit 0
+elif [[ $1 != "-Q" ]]; then
+  exit 2
+fi
+shift
+
+if [[ -n ${OMARCHY_TEST_PACKAGE_CALLS:-} ]]; then
+  exit 0
+elif [[ ${1:-} == "--" ]]; then
+  shift
+  [[ ${1:-} == "installed" ]]
+elif [[ ${1:-} == "--help" ]]; then
+  exit 0
+else
+  [[ ${1:-} == "installed" ]]
+fi
+STUB
+chmod +x "$mock_bin/pacman"
+
+if PATH="$mock_bin:$PATH" "$ROOT/bin/omarchy-pkg-present" --help; then
+  fail "pkg-present treats an option-shaped package name literally"
+fi
+pass "pkg-present treats an option-shaped package name literally"
+
+PATH="$mock_bin:$PATH" "$ROOT/bin/omarchy-pkg-missing" --help ||
+  fail "pkg-missing treats an option-shaped package name literally"
+pass "pkg-missing treats an option-shaped package name literally"
+
+PATH="$mock_bin:$PATH" "$ROOT/bin/omarchy-pkg-present" installed ||
+  fail "pkg-present still finds an installed package"
+pass "pkg-present still finds an installed package"
+
+package_calls="$test_tmp/package-calls"
+cat >"$mock_bin/omarchy-pkg-missing" <<'STUB'
+#!/bin/bash
+
+exit 0
+STUB
+cat >"$mock_bin/sudo" <<'STUB'
+#!/bin/bash
+
+exec "$@"
+STUB
+cat >"$mock_bin/yay" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_PACKAGE_CALLS:?}"
+{
+  printf 'yay'
+  printf ' <%s>' "$@"
+  printf '\n'
+} >>"$OMARCHY_TEST_PACKAGE_CALLS"
+STUB
+chmod +x "$mock_bin/omarchy-pkg-missing" "$mock_bin/sudo" "$mock_bin/yay"
+
+: >"$package_calls"
+PATH="$mock_bin:$ROOT/bin:$PATH" OMARCHY_TEST_PACKAGE_CALLS="$package_calls" \
+  "$ROOT/bin/omarchy-pkg-add" --hookdir=/tmp/hooks
+
+grep -Fx 'pacman <-S> <--noconfirm> <--needed> <--> <--hookdir=/tmp/hooks>' "$package_calls" >/dev/null ||
+  fail "pkg-add separates package operands from pacman options" "$(<"$package_calls")"
+grep -Fx 'pacman <-Q> <--> <--hookdir=/tmp/hooks>' "$package_calls" >/dev/null ||
+  fail "pkg-add verifies an option-shaped package name literally" "$(<"$package_calls")"
+pass "pkg-add keeps option-shaped package names out of pacman option parsing"
+
+: >"$package_calls"
+PATH="$mock_bin:$ROOT/bin:$PATH" OMARCHY_TEST_PACKAGE_CALLS="$package_calls" \
+  "$ROOT/bin/omarchy-pkg-aur-add" --hookdir=/tmp/hooks
+
+grep -Fx 'yay <-S> <--noconfirm> <--needed> <--> <--hookdir=/tmp/hooks>' "$package_calls" >/dev/null ||
+  fail "pkg-aur-add separates package operands from yay options" "$(<"$package_calls")"
+grep -Fx 'pacman <-Q> <--> <--hookdir=/tmp/hooks>' "$package_calls" >/dev/null ||
+  fail "pkg-aur-add verifies an option-shaped package name literally" "$(<"$package_calls")"
+pass "pkg-aur-add keeps option-shaped package names out of package-manager option parsing"
+
+cat >"$mock_bin/grep" <<'STUB'
+#!/bin/bash
+
+if [[ $1 != "-qi" ]]; then
+  exit 2
+fi
+shift
+
+if [[ ${1:-} == "--help" ]]; then
+  exit 0
+elif [[ ${1:-} == "--" ]]; then
+  shift
+fi
+[[ ${1:-} == "known-hardware" ]]
+STUB
+chmod +x "$mock_bin/grep"
+
+if PATH="$mock_bin:$PATH" "$ROOT/bin/omarchy-hw-match" --help; then
+  fail "hw-match treats an option-shaped hardware pattern literally"
+fi
+pass "hw-match treats an option-shaped hardware pattern literally"
+
+PATH="$mock_bin:$PATH" "$ROOT/bin/omarchy-hw-match" known-hardware ||
+  fail "hw-match still accepts an ordinary hardware pattern"
+pass "hw-match still accepts an ordinary hardware pattern"
+
+pkill_calls="$test_tmp/pkill-calls"
+cat >"$mock_bin/pkill" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_PKILL_CALLS:?}"
+printf '<%s>\n' "$@" >"$OMARCHY_TEST_PKILL_CALLS"
+STUB
+cat >"$mock_bin/setsid" <<'STUB'
+#!/bin/bash
+
+if [[ -n ${OMARCHY_TEST_SETSID_CALLS:-} ]]; then
+  printf '<%s>\n' "$@" >"$OMARCHY_TEST_SETSID_CALLS"
+fi
+exit 0
+STUB
+chmod +x "$mock_bin/pkill" "$mock_bin/setsid"
+
+PATH="$mock_bin:$PATH" OMARCHY_TEST_PKILL_CALLS="$pkill_calls" \
+  "$ROOT/bin/omarchy-restart-app" "-9 kitty"
+
+pkill_argv=$(<"$pkill_calls")
+[[ $pkill_argv == $'<-x>\n<-->\n<-9 kitty>' ]] ||
+  fail "restart-app treats the application name as one literal pkill pattern" "$pkill_argv"
+pass "restart-app treats the application name as one literal pkill pattern"
+
+fake_home="$test_tmp/home"
+editor_calls="$test_tmp/editor-calls"
+mkdir -p "$fake_home/.local/state/omarchy/defaults"
+printf 'nvim\n' >"$fake_home/.local/state/omarchy/defaults/editor"
+
+cat >"$mock_bin/nvim" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_EDITOR_CALLS:?}"
+printf '<%s>\n' "$@" >"$OMARCHY_TEST_EDITOR_CALLS"
+STUB
+chmod +x "$mock_bin/nvim"
+
+HOME="$fake_home" PATH="$mock_bin:$ROOT/bin:$PATH" OMARCHY_TEST_EDITOR_CALLS="$editor_calls" \
+  "$ROOT/bin/omarchy-launch-editor" --inline -cquit
+
+editor_argv=$(<"$editor_calls")
+[[ $editor_argv == $'<-->\n<-cquit>' ]] ||
+  fail "launch-editor separates an option-shaped path from editor options" "$editor_argv"
+pass "launch-editor separates an option-shaped path from editor options"
+
+cat >"$mock_bin/omarchy-launch-tui" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_EDITOR_CALLS:?}"
+printf '<%s>\n' "$@" >"$OMARCHY_TEST_EDITOR_CALLS"
+STUB
+chmod +x "$mock_bin/omarchy-launch-tui"
+
+HOME="$fake_home" PATH="$mock_bin:$ROOT/bin:$PATH" OMARCHY_TEST_EDITOR_CALLS="$editor_calls" \
+  "$ROOT/bin/omarchy-launch-editor" -cquit
+
+editor_argv=$(<"$editor_calls")
+[[ $editor_argv == $'<nvim>\n<-->\n<-cquit>' ]] ||
+  fail "launch-editor separates a terminal editor path from editor options" "$editor_argv"
+pass "launch-editor separates a terminal editor path from editor options"
+
+setsid_calls="$test_tmp/setsid-calls"
+printf 'code\n' >"$fake_home/.local/state/omarchy/defaults/editor"
+cat >"$mock_bin/code" <<'STUB'
+#!/bin/bash
+
+exit 0
+STUB
+chmod +x "$mock_bin/code"
+
+HOME="$fake_home" PATH="$mock_bin:$ROOT/bin:$PATH" OMARCHY_TEST_SETSID_CALLS="$setsid_calls" \
+  "$ROOT/bin/omarchy-launch-editor" -cquit
+
+setsid_argv=$(<"$setsid_calls")
+[[ $setsid_argv == $'<uwsm-app>\n<-->\n<code>\n<-->\n<-cquit>' ]] ||
+  fail "launch-editor separates a graphical editor path from editor options" "$setsid_argv"
+pass "launch-editor separates a graphical editor path from editor options"
+
+hook_calls="$test_tmp/hook-calls"
+hook_home="$test_tmp/hook-home"
+printf '#!/bin/bash\n' >"$test_tmp/--help"
+cat >"$mock_bin/basename" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_HOOK_CALLS:?}"
+{
+  printf 'basename'
+  printf ' <%s>' "$@"
+  printf '\n'
+} >>"$OMARCHY_TEST_HOOK_CALLS"
+printf 'literal-hook\n'
+STUB
+cat >"$mock_bin/cp" <<'STUB'
+#!/bin/bash
+
+: "${OMARCHY_TEST_HOOK_CALLS:?}"
+{
+  printf 'cp'
+  printf ' <%s>' "$@"
+  printf '\n'
+} >>"$OMARCHY_TEST_HOOK_CALLS"
+STUB
+for command in mkdir chmod; do
+  printf '#!/bin/bash\nexit 0\n' >"$mock_bin/$command"
+done
+chmod +x "$mock_bin/basename" "$mock_bin/cp" "$mock_bin/mkdir" "$mock_bin/chmod"
+
+: >"$hook_calls"
+(
+  cd -- "$test_tmp"
+  HOME="$hook_home" PATH="$mock_bin:$PATH" OMARCHY_TEST_HOOK_CALLS="$hook_calls" \
+    "$ROOT/bin/omarchy-hook-install" post-update --help >/dev/null
+)
+
+hook_argv=$(<"$hook_calls")
+expected_hook_argv=$'basename <--> <--help>\ncp <--> <--help> <'"$hook_home"'/.config/omarchy/hooks/post-update.d/literal-hook>'
+[[ $hook_argv == $expected_hook_argv ]] ||
+  fail "hook-install treats its source file as an operand" "$hook_argv"
+pass "hook-install treats its source file as an operand"