X-Git-Url: http://nitlanguage.org

diff --git a/lib/standard/ropes.nit b/lib/standard/ropes.nit
index 7f1ba2b..902649a 100644
--- a/lib/standard/ropes.nit
+++ b/lib/standard/ropes.nit
@@ -74,7 +74,7 @@ end
 private class Concat
 	super RopeString
 
-	redef var length: Int is noinit
+	redef var length is noinit
 
 	redef fun substrings do return new RopeSubstrings(self)
 
@@ -157,6 +157,26 @@ private class Concat
 			return new Concat(left, r + s)
 		end
 	end
+
+	redef fun copy_to_native(dest, n, src_offset, dest_offset) do
+		var subs = new RopeSubstrings.from(self, src_offset)
+		var st = src_offset - subs.pos
+		var off = dest_offset
+		while n > 0 do
+			var it = subs.item
+			if n > it.length then
+				var cplen = it.length - st
+				it.items.copy_to(dest, cplen, st, off)
+				off += cplen
+				n -= cplen
+			else
+				it.items.copy_to(dest, n, st, off)
+				n = 0
+			end
+			subs.next
+			st = 0
+		end
+	end
 end
 
 # Mutable `Rope`, optimized for concatenation operations
@@ -806,7 +826,7 @@ class RopeBufferIter
 	# Maximum position iterable.
 	var maxpos: Int
 
-	redef var index: Int
+	redef var index
 
 	# Init the iterator from a RopeBuffer.
 	init(t: RopeBuffer) is old_style_init do
@@ -856,7 +876,7 @@ class RopeBufferReviter
 	# Current position in `ns`.
 	var pns: Int
 
-	redef var index: Int
+	redef var index
 
 	# Init the iterator from a RopeBuffer.
 	init(tgt: RopeBuffer) is old_style_init do