patch 8.2.3306: unexpected "No matching autocommands"

Problem:    Unexpected "No matching autocommands".
Solution:   Do not give the message when aborting.  Mention the arguments in
            the message. (closes #8690)

src/autocmd.c

@@ -1287,10 +1287,11 @@ do_autocmd_event(
  */
     int
 do_doautocmd(
-    char_u	*arg,
+    char_u	*arg_start,
     int		do_msg,	    // give message for no matching autocmds?
     int		*did_something)
 {
+    char_u	*arg = arg_start;
     char_u	*fname;
     int		nothing_done = TRUE;
     int		group;
@@ -1329,8 +1330,12 @@ do_doautocmd(
 				      fname, NULL, TRUE, group, curbuf, NULL))
 	    nothing_done = FALSE;
 
-    if (nothing_done && do_msg)
-	msg(_("No matching autocommands"));
+    if (nothing_done && do_msg
+#ifdef FEAT_EVAL
+		&& !aborting()
+#endif
+	       )
+	smsg(_("No matching autocommands: %s"), arg_start);
     if (did_something != NULL)
 	*did_something = !nothing_done;
 

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3306,
 /**/
     3305,
 /**/