* document the new flag:list

man/mu-find.1

@@ -137,6 +137,7 @@ of the message, as listed in the following table:
 	a,attach        Has attachment
 	z,signed        Signed message
 	x,encrypted     Encrypted message
+	l,list          Mailing-list message
 .fi
 
 Using this, we can search e.g. for all signed messages that have an

mu4e/mu4e.texi

@@ -1602,6 +1602,11 @@ wildcard can only appear as the term's rightmost character:
 subject:soc*
 @end verbatim
 
+@item Get all messages @emph{not} sent to a mailing-list:
+@verbatim
+NOT flag:list
+@end verbatim
+
 @item Get all mails with attachments with filenames starting with @emph{pic}; note
 that the '*' wildcard can only appear as the term's rightmost character:
 @verbatim
@@ -1832,7 +1837,7 @@ mu4e-headers-mark-subthread}, respectively
   read         | !           | mark as read
   refile       | r           | mark for refiling
   trash        | d           | move to the trash folder
-  untrash      | =           | remove 'trash' flag    
+  untrash      | =           | remove 'trash' flag
   unflag       | -           | remove 'flagged' mark
   unmark       | u           | remove mark at point
   unmark all   | U           | remove all marks
@@ -2371,7 +2376,7 @@ using @t{org-mode}; since this never worked very well, this has now been
 deprecated; it might be replaced in some future version with something better.
 
 @subsection Some caveats
- 
+
 @node Maintaining an address-book with org-contacts
 @section Maintaining an address-book with org-contacts