all into sphinx

docs/SdiffCommand.rst

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+`|Redis Documentation| <index.html>`_
+**SdiffCommand: Contents**
+  `SDIFF \_key1\_ \_key2\_ ... \_keyN\_ <#SDIFF%20_key1_%20_key2_%20...%20_keyN_>`_
+    `Return value <#Return%20value>`_
+SdiffCommand
+============
+
+#sidebar `SetCommandsSidebar <SetCommandsSidebar.html>`_
+SDIFF \_key1\_ \_key2\_ ... \_keyN\_
+====================================
+
+*Time complexity O(N) with N being the total number of elements of all the sets*
+    Return the members of a set resulting from the difference between
+    the firstset provided and all the successive sets. Example:
+
+::
+
+    key1 = x,a,b,c
+    key2 = c
+    key3 = a,d
+    SDIFF key1,key2,key3 => x,b
+
+    Non existing keys are considered like empty sets.
+
+Return value
+------------
+
+`Multi bulk reply <ReplyTypes.html>`_, specifically the list of
+common elements.
+.. |Redis Documentation| image:: redis.png