Index: pyyaml/trunk/lib/yaml/__init__.py
===================================================================
--- pyyaml/trunk/lib/yaml/__init__.py	(revision 147)
+++ pyyaml/trunk/lib/yaml/__init__.py	(revision 152)
@@ -135,4 +135,5 @@
 
 def dump_all(documents, stream=None, Dumper=Dumper,
+        default_style=None, default_flow_style=None,
         canonical=None, indent=None, width=None,
         allow_unicode=None, line_break=None,
@@ -151,5 +152,7 @@
         stream = StringIO()
         getvalue = stream.getvalue
-    dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
+    dumper = Dumper(stream, default_style=default_style,
+            default_flow_style=default_flow_style,
+            canonical=canonical, indent=indent, width=width,
             allow_unicode=allow_unicode, line_break=line_break,
             encoding=encoding, version=version, tags=tags,