Matches with the .match() method are exact (satisfying select=EXACT).

src/vmod_selector.c

@@ -300,6 +300,7 @@ vmod_set_match(VRT_CTX, struct vmod_selector_set *set, VCL_STRING subject)
 	}
 	*match->indices = idx;
 	match->n = 1;
+	match->exact = idx;
 	return (1);
 }