SearchAbout and similar: add a customizable blacklist

 Instead of hard-coding in search.ml some substrings such
 as "_admitted" or "_subproof" we don't want to see in results
 of SearchAbout and co, we now have a user command:

  Add Search Blacklist "foo".
  Remove Search Blacklist "foo". (* the opposite *)
  Print Table Search Blacklist. (* the current state *)

 In Prelude.v, three substrings are blacklisted originally:
  - "_admitted" for internal lemmas due to admit.
  - "_subproof" for internal lemmas due to abstract.
  - "Private_" for hiding auxiliary modules not meant for
    global usage.

 Note that substrings are searched in the fully qualified names
 of the available lemmas (e.g. "Coq.Init.Peano.plus").

 This commit also adds the prefix "Private_" to some internal modules
 in Numbers, Z, N, etc.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14408 85f007b7-540e-0410-9357-904b9bb8a0f7

8 files changed, 16 insertions, 13 deletions

diff --git a/theories/Numbers/Integer/Abstract/ZDivEucl.v b/theories/Numbers/Integer/Abstract/ZDivEucl.v
index 954b89150a..fe951a7511 100644
--- a/theories/Numbers/Integer/Abstract/ZDivEucl.v
+++ b/theories/Numbers/Integer/Abstract/ZDivEucl.v
@@ -43,7 +43,7 @@ Module ZEuclidProp
  (Import C : ZSgnAbsProp A B)
  (Import D : ZEuclid' A).
 
- Module Import NZDivP := Nop <+ NZDivProp A D B.
+ Module Import Private_NZDiv := Nop <+ NZDivProp A D B.
 
 (** Another formulation of the main equation *)
 
diff --git a/theories/Numbers/Integer/Abstract/ZDivFloor.v b/theories/Numbers/Integer/Abstract/ZDivFloor.v
index 0e54c453b7..14003d8926 100644
--- a/theories/Numbers/Integer/Abstract/ZDivFloor.v
+++ b/theories/Numbers/Integer/Abstract/ZDivFloor.v
@@ -32,7 +32,7 @@ Module Type ZDivProp
  (Import C : ZSgnAbsProp A B).
 
 (** We benefit from what already exists for NZ *)
-Module Import NZDivP := Nop <+ NZDivProp A A B.
+Module Import Private_NZDiv := Nop <+ NZDivProp A A B.
 
 (** Another formulation of the main equation *)
 
diff --git a/theories/Numbers/Integer/Abstract/ZDivTrunc.v b/theories/Numbers/Integer/Abstract/ZDivTrunc.v
index 74abedb423..bd8b6ce239 100644
--- a/theories/Numbers/Integer/Abstract/ZDivTrunc.v
+++ b/theories/Numbers/Integer/Abstract/ZDivTrunc.v
@@ -33,6 +33,7 @@ Module Type ZQuotProp
 
 (** We benefit from what already exists for NZ *)
 
+ Module Import Private_Div.
  Module Quot2Div <: NZDiv A.
   Definition div := quot.
   Definition modulo := A.rem.
@@ -41,8 +42,8 @@ Module Type ZQuotProp
   Definition div_mod := quot_rem.
   Definition mod_bound_pos := rem_bound_pos.
  End Quot2Div.
-
  Module NZQuot := Nop <+ NZDivProp A Quot2Div B.
+ End Private_Div.
 
 Ltac pos_or_neg a :=
  let LT := fresh "LT" in
diff --git a/theories/Numbers/NatInt/NZOrder.v b/theories/Numbers/NatInt/NZOrder.v
index 3722d4727d..8cf5b26fb1 100644
--- a/theories/Numbers/NatInt/NZOrder.v
+++ b/theories/Numbers/NatInt/NZOrder.v
@@ -146,7 +146,8 @@ Definition lt_compat := lt_wd.
 Definition lt_total := lt_trichotomy.
 Definition le_lteq := lt_eq_cases.
 
-Module OrderElts <: TotalOrder.
+Module Private_OrderTac.
+Module Elts <: TotalOrder.
  Definition t := t.
  Definition eq := eq.
  Definition lt := lt.
@@ -156,9 +157,10 @@ Module OrderElts <: TotalOrder.
  Definition lt_compat := lt_compat.
  Definition lt_total := lt_total.
  Definition le_lteq := le_lteq.
-End OrderElts.
-Module OrderTac := !MakeOrderTac OrderElts.
-Ltac order := OrderTac.order.
+End Elts.
+Module Tac := !MakeOrderTac Elts.
+End Private_OrderTac.
+Ltac order := Private_OrderTac.Tac.order.
 
 (** Some direct consequences of [order]. *)
 
diff --git a/theories/Numbers/Natural/Abstract/NDiv.v b/theories/Numbers/Natural/Abstract/NDiv.v
index 1050516117..6db8e44895 100644
--- a/theories/Numbers/Natural/Abstract/NDiv.v
+++ b/theories/Numbers/Natural/Abstract/NDiv.v
@@ -13,7 +13,7 @@ Require Import NAxioms NSub NZDiv.
 Module Type NDivProp (Import N : NAxiomsSig')(Import NP : NSubProp N).
 
 (** We benefit from what already exists for NZ *)
-Module Import NZDivP := Nop <+ NZDivProp N N NP.
+Module Import Private_NZDiv := Nop <+ NZDivProp N N NP.
 
 Ltac auto' := try rewrite <- neq_0_lt_0; auto using le_0_l.
 
diff --git a/theories/Numbers/Natural/Abstract/NLog.v b/theories/Numbers/Natural/Abstract/NLog.v
index 0accf38b09..74827c6e76 100644
--- a/theories/Numbers/Natural/Abstract/NLog.v
+++ b/theories/Numbers/Natural/Abstract/NLog.v
@@ -18,6 +18,6 @@ Module Type NLog2Prop
 
  (** For the moment we simply reuse NZ properties *)
 
- Include NZLog2Prop A A A B D.NZPowP.
- Include NZLog2UpProp A A A B D.NZPowP.
+ Include NZLog2Prop A A A B D.Private_NZPow.
+ Include NZLog2UpProp A A A B D.Private_NZPow.
 End NLog2Prop.
diff --git a/theories/Numbers/Natural/Abstract/NPow.v b/theories/Numbers/Natural/Abstract/NPow.v
index b046e383dd..07aee9c6fb 100644
--- a/theories/Numbers/Natural/Abstract/NPow.v
+++ b/theories/Numbers/Natural/Abstract/NPow.v
@@ -17,7 +17,7 @@ Module Type NPowProp
  (Import B : NSubProp A)
  (Import C : NParityProp A B).
 
- Module Import NZPowP := Nop <+ NZPowProp A A B.
+ Module Import Private_NZPow := Nop <+ NZPowProp A A B.
 
 Ltac auto' := trivial; try rewrite <- neq_0_lt_0; auto using le_0_l.
 Ltac wrap l := intros; apply l; auto'.
diff --git a/theories/Numbers/Natural/Abstract/NSqrt.v b/theories/Numbers/Natural/Abstract/NSqrt.v
index 1b49678e42..34b7d0110a 100644
--- a/theories/Numbers/Natural/Abstract/NSqrt.v
+++ b/theories/Numbers/Natural/Abstract/NSqrt.v
@@ -12,7 +12,7 @@ Require Import NAxioms NSub NZSqrt.
 
 Module NSqrtProp (Import A : NAxiomsSig')(Import B : NSubProp A).
 
- Module Import NZSqrtP := Nop <+ NZSqrtProp A A B.
+ Module Import Private_NZSqrt := Nop <+ NZSqrtProp A A B.
 
  Ltac auto' := trivial; try rewrite <- neq_0_lt_0; auto using le_0_l.
  Ltac wrap l := intros; apply l; auto'.
@@ -70,6 +70,6 @@ Proof. wrap add_sqrt_le. Qed.
 
 (** For the moment, we include stuff about [sqrt_up] with patching them. *)
 
-Include NZSqrtUpProp A A B NZSqrtP.
+Include NZSqrtUpProp A A B Private_NZSqrt.
 
 End NSqrtProp.