- Specify whether to omit messages matching search.tag_exclude
- from the search results (the default) or not. The extra option
- <b>flag</b> only has an effect when <b>--output=summary</b> In this case all
- matching threads are returned but the "match count" is the num-
- ber of matching non-excluded messages in the thread.
+ <b>false</b> allows excluded messages to match search terms and
+ appear in displayed results. Excluded messages are still
+ marked in the relevant outputs.
+
+ <b>flag</b> only has an effect when --output=summary. The output is
+ almost identical to <b>false</b>, but the "match count" is the num-
+ ber of matching non-excluded messages in the thread, rather
+ than the number of matching messages.
+
+ <b>--duplicate=N</b>
+
+ Effective with --output=files, output the Nth filename asso-
+ ciated with each message matching the query (N is 1-based).
+ If N is greater than the number of files associated with the
+ message, don't print anything.
+
+ Note that this option is orthogonal with the <b>folder:</b> search
+ prefix. The prefix matches messages based on filenames. This
+ option filters filenames of the matching messages.
+</pre>
+
+<h2>EXIT STATUS</h2>
+<pre>
+ This command supports the following special exit status codes
+
+ <b>20</b>
+
+ The requested format version is too old.
+
+ <b>21</b>
+
+ The requested format version is too new.