static int init_plugins(MWindow *mwindow, Preferences *preferences);
static void init_plugin_index(MWindow *mwindow, Preferences *preferences,
FILE *fp, const char *plug_dir, const char *plug_path, int &dir_id);
static int init_plugins(MWindow *mwindow, Preferences *preferences);
static void init_plugin_index(MWindow *mwindow, Preferences *preferences,
FILE *fp, const char *plug_dir, const char *plug_path, int &dir_id);