Changes from 0.8.1.7

Fix a regression that was introduced in 0.8.1.6.

changes from
http://www.nexedi.org/static/packages/source/erp5diff-0.8.1.7.tar.gz

CHANGES.txt

+0.8.1.7 (2015/04/23)
+--------------------
+ * Fix a regression that was introduced in 0.8.1.6.
+
 0.8.1.6 (2015/04/23)
 --------------------
  * Disable _removeStrictEqualsSubNodeList that can make a wrong result

setup.py

@@ -6,7 +6,7 @@ import re
 
 api_version = re.search(r'\s*__version__\s*=\s*(\S+)',
                         open('src/ERP5Diff/ERP5Diff.py').read()).group(1).strip()
-revision = 6
+revision = 7
 version = '%s.%s' % (api_version.replace("'", ''), revision)
 
 def read(name):

src/ERP5Diff/ERP5Diff.py

@@ -252,7 +252,7 @@ class ERP5Diff:
         relative_previous = relative_previous_list[0]
       else:
         relative_previous = None
-      if relative_previous in element_list:
+      if last_append_element is not None and relative_previous in element_list:
         #reuse same container as preceding
         append_element = last_append_element
       elif relative_next is not None and relative_next not in element_list: