- With no search terms, a dump of all messages in the database
- will be generated. A "--" argument instructs notmuch that the
- remaining arguments are search terms.
+ <b>--include=(config|properties|tags)</b>
+ Control what kind of metadata is included in the output.
+
+ <b>config</b> Output configuration data stored in the database. Each
+ line starts with "#@ ", followed by a space separated
+ key-value pair. Both key and value are hex encoded if
+ needed.
+
+ <b>properties</b>
+ Output per-message (key,value) metadata. Each line
+ starts with "#= ", followed by a message id, and a space
+ separated list of key=value pairs. Ids, keys and values
+ are hex encoded if needed. See <a href='../notmuch-properties-7/'>notmuch-properties</a>(7) for
+ more details.
+
+ <b>tags</b> Output per-message boolean metadata, namely tags. See
+ <u>format</u> above for description of the output.
+
+ The default is to include all available types of data. The
+ option can be specified multiple times to select some subset. As
+ of version 3 of the dump format, there is a header line of the
+ following form:
+
+ #notmuch-dump <*format*>:<*version*> <*included*>
+
+ where <<u>included</u>> is a comma separated list of the above options.