ropes: Clean `RopeBuffer.append` a little bit.

Signed-off-by: Jean-Christophe Beaupré <jcbrinfo@users.noreply.github.com>

diff --git a/lib/standard/ropes.nit b/lib/standard/ropes.nit
index db635d9..9ef2f4d 100644 (file)
--- a/lib/standard/ropes.nit
+++ b/lib/standard/ropes.nit
@@ -278,15 +278,7 @@ class RopeBuffer
                var slen = s.length
                length += slen
                var rp = rpos
-               if s isa Rope then
-                       if rp > 0 and dumped != rp then
-                               str += new FlatString.with_infos(ns, rp - dumped, dumped, rp - 1)
-                               dumped = rp
-                       end
-                       str = str + s
-                       return
-               end
-               if slen > maxlen then
+               if s isa Rope or slen > maxlen then
                        if rp > 0 and dumped != rp then
                                str += new FlatString.with_infos(ns, rp - dumped, dumped, rp - 1)
                                dumped = rp
@@ -326,12 +318,11 @@ class RopeBuffer
                        return
                end
                if slen <= remsp then
-                       sits.copy_to(ns, slen, begin, rp)
-                       if rp == buf_size then
-                               rpos = buf_size
+                       if remsp <= 0 then
                                dump_buffer
                                rpos = 0
                        else
+                               sits.copy_to(ns, slen, begin, rp)
                                rpos += slen
                        end
                else