# HG changeset patch
# User Anders Hammarquist <iko@openend.se>
# Date 1352219553 -3600
# Node ID 33d210bed470d0283fdf4deba001b8de71a04166
# Parent  000c17b9d85dc4b4d56b2323554938f6cbff7254
fix slowness when building elements

diff -r 000c17b9d85d -r 33d210bed470 src/lxml/builder.py
--- a/src/lxml/builder.py	Tue Oct 16 19:56:22 2012 +0200
+++ b/src/lxml/builder.py	Tue Nov 06 17:32:33 2012 +0100
@@ -179,9 +179,9 @@
             typemap = {}
         
         def add_text(elem, item):
-            if len(elem):
+            try:
                 elem[-1].tail = (elem[-1].tail or "") + item
-            else:
+            except IndexError:
                 elem.text = (elem.text or "") + item
         if str not in typemap:
             typemap[str] = add_text