yanglint FEATURE debug dep-sets in interactive mod
diff --git a/tools/lint/completion.c b/tools/lint/completion.c
index 3448445..3b69389 100644
--- a/tools/lint/completion.c
+++ b/tools/lint/completion.c
@@ -363,6 +363,20 @@
     get_arg_completion(hint, args, matches, match_count);
 }
 
+#ifndef NDEBUG
+/**
+ * @copydoc get_print_format_arg
+ */
+static void
+get_debug_arg(const char *hint, char ***matches, unsigned int *match_count)
+{
+    const char *args[] = {"dict", "xpath", "dep-sets", NULL};
+
+    get_arg_completion(hint, args, matches, match_count);
+}
+
+#endif
+
 /**
  * @brief Get the string before the hint, which autocompletion is for.
  *
@@ -425,6 +439,9 @@
         {CMD_DATA,        NULL,    linenoisePathCompletion, NULL},
         {CMD_LIST,        NULL,    NULL, get_list_format_arg},
         {CMD_FEATURE,     NULL,    NULL, get_model_completion},
+#ifndef NDEBUG
+        {CMD_DEBUG,       NULL,    NULL, get_debug_arg},
+#endif
     };
     size_t name_len;
     const char *last, *name, *getoptstr;