will be delimited by easily-parsed markers. Each marker consists of a
Control-L character (ASCII decimal 12), the name of the marker, and
then either an opening or closing brace, ('{' or '}'), to either open
-or close the component.
+or close the component. For a multipart MIME message, these parts will
+be nested.
.RE
.RS 4
.TP 4
The output is formatted with Javascript Object Notation (JSON). This
format is more robust than the text format for automated
-processing. JSON output always includes all messages in a matching
-thread; in effect
+processing. The nested structure of multipart MIME messages is
+reflected in nested JSON output. JSON output always includes all
+messages in a matching thread; in effect
.B \-\-format=json
implies
.B \-\-entire\-thread
thread:<thread-id>
+ folder:<directory-path>
+
The
.B from:
prefix is used to match the name or address of the sender of an email
thread ID values can be seen in the first column of output from
.B "notmuch search"
+The
+.B folder:
+prefix can be used to search for email message files that are
+contained within particular directories within the mail store. Only
+the directory components below the top-level mail database path are
+available to be searched.
+
In addition to individual terms, multiple terms can be
combined with Boolean operators (
.BR and ", " or ", " not