[PATCH] man: document notmuch address --deduplicate=(no|mailbox) option

[Jani Nikula]

Document the deduplication of results.
---
 doc/man1/notmuch-address.rst | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/man1/notmuch-address.rst b/doc/man1/notmuch-address.rst
index 9570095b23c8..6003ed29cf32 100644
--- a/doc/man1/notmuch-address.rst
+++ b/doc/man1/notmuch-address.rst
@@ -55,6 +55,21 @@ Supported options for **address** include
             Note: With this option, addresses are printed only after
             the whole search is finished. This may take long time.
 
+    ``--deduplicate=(no|mailbox)``
+
+        Control the deduplication of results.
+
+        **no**
+            Output all occurences of addresses in the matching
+            messages. This is not applicable with --output=count.
+
+        **mailbox**
+	    Deduplicate addresses based on the full, case sensitive
+	    name and email address, or mailbox. This is effectively
+	    the same as piping the --deduplicate=no output to **sort |
+	    uniq**, except for the order of results. This is the
+	    default.
+
     ``--sort=``\ (**newest-first**\ \|\ **oldest-first**)
         This option can be used to present results in either
         chronological order (**oldest-first**) or reverse chronological
-- 
2.1.4