diff --git a/main.ml b/main.ml
index 32ed7e9..66b8071 100644
--- a/main.ml
+++ b/main.ml
@@ -59,7 +59,9 @@ module Input = struct
   module Bind = struct
     module S = Zed_input.Make(Key)
     include S
-    type action = Custom of (unit -> unit) | Zed of Zed_edit.action
+    type action = Custom of (unit -> unit)
+                | Zed of Zed_edit.action
+        
     (* stolen from lambda-term/src/lTerm_{edit,key}.ml{,i} *)
     let bindings = ref empty
         
@@ -167,8 +169,30 @@ module Event = struct
     | `Mouse of mouse
     | `Quit
     | `Fullscreen of bool
+    | `Unknown of string
     | `None ]
 
+  let string_of_event = function
+    | `Key_down _ -> "`Key_down"
+    | `Key_up _ -> "`Key_up"
+    | `Text_editing _ -> "`Text_editing"
+    | `Text_input _ -> "`Text_input"
+    | `Mouse _ -> "`Mouse"
+    | `Quit -> "`Quit"
+    | `Fullscreen _ -> "`Fullscreen"
+    | `Unknown _ -> "`Unknown"
+    | `None -> "`None"
+
+  let to_string ev =
+    let p = (match ev with
+        | `Key_down k | `Key_up k -> Input.to_string k
+        | `Text_editing s | `Text_input s -> s
+        | `Mouse _ -> ""
+        | `Fullscreen b -> Format.sprintf "%b" b
+        | `Unknown s -> s
+        | `Quit | `None -> "") in
+    (string_of_event ev) ^ " " ^ p
+
   let event_of_sdlevent ev =
     let key_of_sdlkey ev = 
       let km = Sdl.Event.get ev Sdl.Event.keyboard_keymod in
@@ -202,14 +226,52 @@ module Event = struct
           Sdl.Kmod.[ (shift, Shift); (ctrl, Ctrl); (alt, Meta); (gui, Fn) ] in
       { code = c; mods = Input.Keymod.of_list mods; } in
     let repeat = Sdl.Event.get ev Sdl.Event.keyboard_repeat in
-    match Sdl.Event.enum (Sdl.Event.get ev Sdl.Event.typ) with
-    | `Text_editing -> `None
+    let r = (match Sdl.Event.enum (Sdl.Event.get ev Sdl.Event.typ) with
+    | `Text_editing -> `Unknown (Format.sprintf "`Text_editing %s" (Sdl.Event.get ev Sdl.Event.text_editing_text))
     | `Text_input -> `Text_input (Sdl.Event.get ev Sdl.Event.text_input_text)
     | `Key_down -> if repeat < 1 then `Key_down (key_of_sdlkey ev) else `None
     | `Key_up -> if repeat < 1 then `Key_up (key_of_sdlkey ev) else `None
     | `Mouse_motion -> let _, mouse_xy = Tsdl.Sdl.get_mouse_state () in `Mouse mouse_xy
     | `Quit -> `Quit
-    | _ -> (*F.epr "Unknown Event@." ; *) `None
+    (* Unhandled events *)
+    | `App_did_enter_background  -> `Unknown "`App_did_enter_background"
+    | `App_did_enter_foreground  -> `Unknown "`App_did_enter_foreground "
+    | `App_low_memory -> `Unknown "`App_low_memory "
+    | `App_terminating -> `Unknown "`App_terminating "
+    | `App_will_enter_background  -> `Unknown "`App_will_enter_background "
+    | `App_will_enter_foreground  -> `Unknown "`App_will_enter_foreground "
+    | `Clipboard_update -> `Unknown "`Clipboard_update "
+    | `Controller_axis_motion -> `Unknown "`Controller_axis_motion "
+    | `Controller_button_down -> `Unknown "`Controller_button_down "
+    | `Controller_button_up -> `Unknown "`Controller_button_up "
+    | `Controller_device_added -> `Unknown "`Controller_device_added "
+    | `Controller_device_remapped  -> `Unknown "`Controller_device_remapped "
+    | `Controller_device_removed  -> `Unknown "`Controller_device_removed "
+    | `Dollar_gesture -> `Unknown "`Dollar_gesture "
+    | `Dollar_record -> `Unknown "`Dollar_record "
+    | `Drop_file -> `Unknown "`Drop_file "                 
+    | `Finger_down -> `Unknown "`Finger_down"                 
+    | `Finger_motion -> `Unknown "`Finger_motion "              
+    | `Finger_up -> `Unknown "`Finger_up "                  
+    | `Joy_axis_motion -> `Unknown "`Joy_axis_motion "            
+    | `Joy_ball_motion -> `Unknown "`Joy_ball_motion "            
+    | `Joy_button_down -> `Unknown "`Joy_button_down "            
+    | `Joy_button_up -> `Unknown "`Joy_button_up "              
+    | `Joy_device_added -> `Unknown "`Joy_device_added "           
+    | `Joy_device_removed -> `Unknown "`Joy_device_removed "         
+    | `Joy_hat_motion -> `Unknown "`Joy_hat_motion "             
+    | `Mouse_button_down -> `Unknown "`Mouse_button_down "         
+    | `Mouse_button_up -> `Unknown "`Mouse_button_up"             
+    | `Mouse_wheel -> `Unknown "`Mouse_wheel "               
+    | `Multi_gesture -> `Unknown "`Multi_gesture"               
+    | `Sys_wm_event -> `Unknown "`Sys_wm_event "               
+    | `Unknown e -> `Unknown (Format.sprintf "`Unknown %d " e)
+    | `User_event -> `Unknown "`User_event "                
+    | `Window_event -> `Unknown "`Window_event "              
+    | `Display_event -> `Unknown "`Display_event "
+    | `Sensor_update -> `Unknown "`Sensor_update ") in
+    F.epr "event_of_sdlevent: %s@." (to_string r);
+    r
 
   let key_up : Sdl.keycode = 0x40000052
 
@@ -616,7 +678,9 @@ let default_bindings =
   add [{ mods = m [Meta]; code = Delete }] [Zed Kill_prev_word];
   add [{ mods = m [Ctrl]; code = Delete }] [Zed Kill_next_word];
   add [{ mods = m [Meta]; code = Char(UChar.of_char 'd') }] [Zed Kill_next_word];
-  add [{ mods = m [Ctrl]; code = Char(UChar.of_char '_') }] [Zed Undo];
+  add [{ mods = m [Ctrl]; code = Char(UChar.of_char '/') }] [Zed Undo];
+  add [{ mods = m [Ctrl]; code = Char(UChar.of_char 'x')};
+       {mods = m []; code = Char(UChar.of_char 'u')}] [Zed Undo];
   !b
     
 type textedit = { ze : unit Zed_edit.t;
@@ -654,10 +718,7 @@ let draw_textedit (te : textedit) height (s : Display.state) =
          | Continue _ -> ()
          | Rejected -> ())
       | `Key_up _ -> ()
-      | `Text_input s ->
-        let zs = (Zed_string.of_utf8 s) in
-        F.epr "draw_textedit: `Text_input %s@." (Zed_string.to_utf8 zs);
-        Zed_edit.insert ctx (Zed_rope.of_string zs)
+      | `Text_input s -> Zed_edit.insert ctx (Zed_rope.of_string (Zed_string.of_utf8 s))
       | _ -> ()) s.events;
   draw_pp height
     (fun pp ->
@@ -835,4 +896,3 @@ let () = Display.(run (make_frame ~title:"hi" ~w:1440 ~h:900 ()) !draw_komm) ()
 (* Implement the "window management" as just toplevel defined functions that manipulate the window tree *)
 
   
-