From 42fb6dce8110e29ccf233c09e6d6b1d58d9e5fef Mon Sep 17 00:00:00 2001
From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Sat, 29 May 2021 10:43:47 +0200
Subject: [PATCH] nCicLibrary

+ config flag added to emove old objects before storing new ones
  I don't even rememberwhy thisisnot done by default
---
 matita/components/ng_library/nCicLibrary.ml | 5 +++--
 matita/matita/matita.conf.xml.in            | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/matita/components/ng_library/nCicLibrary.ml b/matita/components/ng_library/nCicLibrary.ml
index 0620a6233..e2e7d1b34 100644
--- a/matita/components/ng_library/nCicLibrary.ml
+++ b/matita/components/ng_library/nCicLibrary.ml
@@ -260,9 +260,10 @@ module Serializer(D: sig type dumpable_s = private #dumpable_status end) =
    let ch = open_out (ng_path_of_baseuri baseuri) in
    Marshal.to_channel ch (magic,(status#dump.dependencies,status#dump.objs)) [];
    close_out ch;
-(*
+
+   if Helm_registry.get_bool "matita.remove_old_objects" then
    remove_objects ~baseuri; (* FG: we remove the old objects before putting the new ones*)
-*)
+
    List.iter
     (function 
      | `Obj (uri,obj) ->
diff --git a/matita/matita/matita.conf.xml.in b/matita/matita/matita.conf.xml.in
index c16e997bb..851d0e816 100644
--- a/matita/matita/matita.conf.xml.in
+++ b/matita/matita/matita.conf.xml.in
@@ -15,6 +15,8 @@
     <!-- Debug only. Stay away. -->
     <!-- <key name="environment_trust">true</key> -->
     <key name="basedir">$(user.home)/.matita</key>
+    <!-- remove the old objects before putting the new ones -->
+    <key name="remove_old_objects">false</key>
     <!-- Where support files are installed -->
     <key name="rt_base_dir">@RT_BASE_DIR@</key>
     <!-- Metadata owner. It will be used to create user-specific tables
-- 
2.39.2