Notation: a new annotation "compat 8.x" extending "only parsing"

 Suppose we declare : Notation foo := bar (compat "8.3").
 Then each time foo is used in a script :

 - By default nothing particular happens (for the moment)

 - But we could get a warning explaining that
   "foo is bar since coq > 8.3".
   For that, either use the command-line option -verb-compat-notations
   or the interactive command "Set Verbose Compat Notations".

 - There is also a strict mode, where foo is forbidden : the previous
   warning is now an error.
   For that, either use the command-line option -no-compat-notations
   or the interactive command "Unset Compat Notations".

 When Coq is launched in compatibility mode (via -compat 8.x),
 using a notation tagged "8.x" will never trigger a warning or error.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15514 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 15 insertions, 15 deletions

diff --git a/theories/ZArith/Zpow_facts.v b/theories/ZArith/Zpow_facts.v
index 27e3def4e..5d025322b 100644
--- a/theories/ZArith/Zpow_facts.v
+++ b/theories/ZArith/Zpow_facts.v
@@ -29,17 +29,17 @@ Proof. now apply (Z.pow_0_l (Zpos p)). Qed.
 Lemma Zpower_pos_pos x p : 0 < x -> 0 < Z.pow_pos x p.
 Proof. intros. now apply (Z.pow_pos_nonneg x (Zpos p)). Qed.
 
-Notation Zpower_1_r := Z.pow_1_r (only parsing).
-Notation Zpower_1_l := Z.pow_1_l (only parsing).
-Notation Zpower_0_l := Z.pow_0_l' (only parsing).
-Notation Zpower_0_r := Z.pow_0_r (only parsing).
-Notation Zpower_2 := Z.pow_2_r (only parsing).
-Notation Zpower_gt_0 := Z.pow_pos_nonneg (only parsing).
-Notation Zpower_ge_0 := Z.pow_nonneg (only parsing).
-Notation Zpower_Zabs := Z.abs_pow (only parsing).
-Notation Zpower_Zsucc := Z.pow_succ_r (only parsing).
-Notation Zpower_mult := Z.pow_mul_r (only parsing).
-Notation Zpower_le_monotone2 := Z.pow_le_mono_r (only parsing).
+Notation Zpower_1_r := Z.pow_1_r (compat "8.3").
+Notation Zpower_1_l := Z.pow_1_l (compat "8.3").
+Notation Zpower_0_l := Z.pow_0_l' (compat "8.3").
+Notation Zpower_0_r := Z.pow_0_r (compat "8.3").
+Notation Zpower_2 := Z.pow_2_r (compat "8.3").
+Notation Zpower_gt_0 := Z.pow_pos_nonneg (compat "8.3").
+Notation Zpower_ge_0 := Z.pow_nonneg (compat "8.3").
+Notation Zpower_Zabs := Z.abs_pow (compat "8.3").
+Notation Zpower_Zsucc := Z.pow_succ_r (compat "8.3").
+Notation Zpower_mult := Z.pow_mul_r (compat "8.3").
+Notation Zpower_le_monotone2 := Z.pow_le_mono_r (compat "8.3").
 
 Theorem Zpower_le_monotone a b c :
  0 < a -> 0 <= b <= c -> a^b <= a^c.
@@ -233,7 +233,7 @@ Qed.
 
 (** * Zsquare: a direct definition of [z^2] *)
 
-Notation Psquare := Pos.square (only parsing).
-Notation Zsquare := Z.square (only parsing).
-Notation Psquare_correct := Pos.square_spec (only parsing).
-Notation Zsquare_correct := Z.square_spec (only parsing).
+Notation Psquare := Pos.square (compat "8.3").
+Notation Zsquare := Z.square (compat "8.3").
+Notation Psquare_correct := Pos.square_spec (compat "8.3").
+Notation Zsquare_correct := Z.square_spec (compat "8.3").