From c29af56d1c22a8f1d4d95628d77a2ecee04f0a1c Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Sat, 9 Jan 2016 01:55:28 +0100
Subject: [PATCH] sanity: better not to unwrap Placements automatically

quite sure I never really meant to do that, just, at that time,
it seemed logical to treat Placement as yet another smart-ptr.
But in the light of what crucial entity Placement became meanwhile,
I can't imagine a single case where anyone wants to wrap away a
placement as if it was some shrink-wrap
---
 src/lib/format-util.hpp |  2 +-
 src/lib/meta/trait.hpp  | 13 -------------
 2 files changed, 1 insertion(+), 14 deletions(-)

diff --git a/src/lib/format-util.hpp b/src/lib/format-util.hpp
index 96e539c67..21105d7ca 100644
--- a/src/lib/format-util.hpp
+++ b/src/lib/format-util.hpp
@@ -175,7 +175,7 @@ namespace util {
   inline string
   join (CON&& coll, string const& delim =", ")
   {
-    using Coll = typename lib::meta::Strip<CON>::Type;
+    using Coll = typename lib::meta::Strip<CON>::TypePlain;
     using Val =  typename Coll::value_type;
     
     std::function<string(Val const&)> toString = [] (Val const& val) { return util::toString(val); };
diff --git a/src/lib/meta/trait.hpp b/src/lib/meta/trait.hpp
index 399276768..b92de002a 100644
--- a/src/lib/meta/trait.hpp
+++ b/src/lib/meta/trait.hpp
@@ -182,19 +182,6 @@ namespace meta {
         }
     };
   
-  template<typename X, class B>
-  struct Unwrap<mobject::Placement<X, B> >
-    {
-      typedef X  Type;
-      
-      static X&
-      extract (mobject::Placement<X,B> placement)
-        {
-          ASSERT (placement.isValid());
-          return *placement;
-        }
-    };
-  
   
   /** convenience shortcut: unwrapping free function.
    *  @return reference to the bare element.