Unicode bug when building error string in ForEach validator

When using localized error messages, a UnicodeEncodeError is raised  
at formencode.foreach:90. The following patch fixes it:

Index: formencode/foreach.py
===================================================================
--- formencode/foreach.py       (revision 2406)
+++ formencode/foreach.py       (working copy)
@@ -88,7 +88,7 @@
                  return new_list
              else:
                  raise Invalid(
-                    'Errors:\n%s' % '\n'.join([str(e) for e in  
errors if e]),
+                    'Errors:\n%s' % '\n'.join([unicode(e) for e in  
errors if e]),
                      value,
                      state,
                      error_list=errors)

Alberto

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