lib/core: Faster access to length in ropes

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>

diff --git a/lib/core/text/ropes.nit b/lib/core/text/ropes.nit
index 1a91e00..10c1acf 100644 (file)
--- a/lib/core/text/ropes.nit
+++ b/lib/core/text/ropes.nit
@@ -172,7 +172,7 @@ private class Concat
                        from = 0
                end
 
-               var ln = length
+               var ln = _length
                if (count + from) > ln then count = ln - from
                if count <= 0 then return ""
                var end_index = from + count - 1