### Remove injection' tactic.

`The tactic injection H as H is doing exactly that.`
parent 1331d75b
 ... ... @@ -117,25 +117,6 @@ does the converse. *) Ltac var_eq x1 x2 := match x1 with x2 => idtac | _ => fail 1 end. Ltac var_neq x1 x2 := match x1 with x2 => fail 1 | _ => idtac end. (** The tactics [block_hyps] and [unblock_hyps] can be used to temporarily mark certain hypothesis as being blocked. The tactic changes all hypothesis [H: T] into [H: blocked T], where [blocked] is the identity function. If a hypothesis is already blocked, it will not be blocked again. The tactic [unblock_hyps] removes [blocked] everywhere. *) Ltac block_hyp H := lazymatch type of H with | block _ => idtac | ?T => change T with (block T) in H end. Ltac block_hyps := repeat_on_hyps (fun H => match type of H with block _ => idtac | ?T => change (block T) in H end). Ltac unblock_hyps := unfold block in * |-. (** The tactic [injection' H] is a variant of injection that introduces the generated equalities. *) Ltac injection' H := block_goal; injection H; clear H; intros H; intros; unblock_goal. (** The tactic [simplify_equality] repeatedly substitutes, discriminates, and injects equalities, and tries to contradict impossible inequalities. *) Ltac fold_classes := ... ... @@ -189,13 +170,14 @@ Ltac simplify_equality := repeat | H : _ = _ |- _ => discriminate H | H : ?f _ = ?f _ |- _ => apply (inj f) in H | H : ?f _ _ = ?f _ _ |- _ => apply (inj2 f) in H; destruct H (* before [injection'] to circumvent bug #2939 in some situations *) | H : ?f _ = ?f _ |- _ => injection' H | H : ?f _ _ = ?f _ _ |- _ => injection' H | H : ?f _ _ _ = ?f _ _ _ |- _ => injection' H | H : ?f _ _ _ _ = ?f _ _ _ _ |- _ => injection' H | H : ?f _ _ _ _ _ = ?f _ _ _ _ _ |- _ => injection' H | H : ?f _ _ _ _ _ _ = ?f _ _ _ _ _ _ |- _ => injection' H (* before [injection] to circumvent bug #2939 in some situations *) | H : ?f _ = ?f _ |- _ => injection H as H (* first hyp will be named [H], subsequent hyps will be given fresh names *) | H : ?f _ _ = ?f _ _ |- _ => injection H as H | H : ?f _ _ _ = ?f _ _ _ |- _ => injection H as H | H : ?f _ _ _ _ = ?f _ _ _ _ |- _ => injection H as H | H : ?f _ _ _ _ _ = ?f _ _ _ _ _ |- _ => injection H as H | H : ?f _ _ _ _ _ _ = ?f _ _ _ _ _ _ |- _ => injection H as H | H : ?x = ?x |- _ => clear H (* unclear how to generalize the below *) | H1 : ?o = Some ?x, H2 : ?o = Some ?y |- _ => ... ...
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