.RS 4
.TP 4
-.B \-\-output=(summary|threads|messages|tags)
+.B \-\-output=(summary|threads|messages|files|tags)
.RS 4
.TP 4
.RE
.RS 4
.TP 4
+.B files
+
+Output the filenames of all messages matching the search terms, either
+one per line (--format=text) or as a JSON array (--format=json).
+.RE
+.RS 4
+.TP 4
.B tags
Output all tags that appear on any message matching the search terms,