+``(infix`` *atom* ``)``
+ Interpret *atom* as an infix notmuch query (see
+ :any:`notmuch-search-terms(7)`). Not supported inside fields.
+
+``(matching`` |q1| |q2| ... |qn| ``)`` ``(of`` |q1| |q2| ... |qn| ``)``
+ Match all messages have the same values of the current field as
+ those matching all of |q1| ... |qn|. Supported in most term [#not-path]_ or
+ phrase fields. Most commonly used in the ``thread`` field.
+
+``(query`` *atom* ``)``
+ Expand to the saved query named by *atom*. See
+ :any:`notmuch-config(1)` for more. Note that the saved query must
+ be in infix syntax (:any:`notmuch-search-terms(7)`). Not supported
+ inside fields.
+