claudebox.sh

@@ -307,10 +307,15 @@ if [[ "$DRY_RUN" == true ]]; then
   {
     echo "bwrap \\"
     echo "  --clearenv \\"
+    # Guard: ENV_ARGS must be a multiple of 3 (--setenv NAME VALUE triplets)
+    if (( ${#ENV_ARGS[@]} % 3 != 0 )); then
+      echo "BUG: ENV_ARGS length ${#ENV_ARGS[@]} is not a multiple of 3" >&2
+      exit 1
+    fi
     dry_run_i=0
     while (( dry_run_i < ${#ENV_ARGS[@]} )); do
       printf '  %s %s %q \\\n' "${ENV_ARGS[$dry_run_i]}" "${ENV_ARGS[$((dry_run_i+1))]}" "${ENV_ARGS[$((dry_run_i+2))]}"
-      (( dry_run_i += 3 ))
+      dry_run_i=$(( dry_run_i + 3 ))
     done
     echo "  --tmpfs / \\"
     echo "  --proc /proc \\"