Use ndot_ne_disjoint more eager so it expands definitions.

theories/tactics.v

@@ -412,10 +412,11 @@ Tactic Notation "feed" "destruct" constr(H) "as" simple_intropattern(IP) :=
 It will search for the first subterm of the goal matching [pat], and then call [tac]
 with that subterm. *)
 Ltac find_pat pat tac :=
-  match goal with |- context [?x] =>
-                  unify pat x with typeclass_instances;
-                  tryif tac x then idtac else fail 2
-end.
+  match goal with
+  |- context [?x] =>
+      unify pat x with typeclass_instances;
+      tryif tac x then idtac else fail 2
+  end.
 
 (** Coq's [firstorder] tactic fails or loops on rather small goals already. In 
 particular, on those generated by the tactic [unfold_elem_ofs] which is used