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

1 files changed, 6 insertions, 4 deletions

diff --git a/theories/Numbers/NatInt/NZOrder.v b/theories/Numbers/NatInt/NZOrder.v
index 3722d4727..8cf5b26fb 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]. *)