lib: add sexp: prefix to Xapian (infix) query parser.

This is analogous to the "infix" prefix provided by the s-expression
based query parser.

1 files changed, 16 insertions, 1 deletions

diff --git a/doc/man7/notmuch-search-terms.rst b/doc/man7/notmuch-search-terms.rst
index f8ad1edb..4f616b7e 100644
--- a/doc/man7/notmuch-search-terms.rst
+++ b/doc/man7/notmuch-search-terms.rst
@@ -169,6 +169,12 @@ property:<key>=<value>
     can be present on a given message with several different values.
     See :any:`notmuch-properties(7)` for more details.
 
+sexp:<subquery>
+    The **sexp:** prefix allows subqueries in the format
+    documented in :any:`notmuch-sexp-queries(7)`. Note that subqueries containing
+    spaces must be quoted, and any embedded double quotes must be escaped
+    (see :any:`quoting`).
+
 User defined prefixes are also supported, see :any:`notmuch-config(1)` for
 details.
 
@@ -257,7 +263,7 @@ Boolean
 Probabilistic
   **body:**, **to:**, **attachment:**, **mimetype:**
 Special
-   **from:**, **query:**, **subject:**
+   **from:**, **query:**, **subject:**, **sexp:**
 
 Terms and phrases
 -----------------
@@ -297,6 +303,8 @@ Both of these will match a subject "Free Delicious Pizza" while
 
 will not.
 
+.. _quoting:
+
 Quoting
 -------
 
@@ -324,6 +332,13 @@ e.g.
    % notmuch search 'folder:"/^.*/(Junk|Spam)$/"'
    % notmuch search 'thread:"{from:mallory and date:2009}" and thread:{to:mallory}'
 
+Double quotes within query strings need to be doubled to escape them.
+
+::
+
+   % notmuch search 'tag:"""quoted tag"""'
+   % notmuch search 'sexp:"(or ""wizard"" ""php"")"'
+
 DATE AND TIME SEARCH
 ====================