+/* Returns true if the given "ident" matches the (more general) selector of
+ * the graph "cfg". */
+_Bool graph_ident_matches (graph_config_t *cfg, const graph_ident_t *ident);
+
+/* Returns true if the selector of the graph "cfg" matches the more general
+ * ident "selector". */
+_Bool graph_matches_ident (graph_config_t *cfg,
+ const graph_ident_t *selector);