1 files changed, 12 insertions, 10 deletions

diff --git a/src/keyboard.c b/src/keyboard.c
index ab7cb34a030..6fa38aa1328 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -195,14 +195,15 @@ Lisp_Object unread_switch_frame;
 /* Last size recorded for a current buffer which is not a minibuffer.  */
 static ptrdiff_t last_non_minibuf_size;
 
-/* Total number of times read_char has returned, modulo UINTMAX_MAX + 1.  */
 uintmax_t num_input_events;
+ptrdiff_t point_before_last_command_or_undo;
+struct buffer *buffer_before_last_command_or_undo;
 
 /* Value of num_nonmacro_input_events as of last auto save.  */
 
 static EMACS_INT last_auto_save;
 
-/* The value of point when the last command was started.  */
+/* The value of point when the last command was started. */
 static ptrdiff_t last_point_position;
 
 /* The frame in which the last input event occurred, or Qmacro if the
@@ -1449,6 +1450,11 @@ command_loop_1 (void)
                result of changes from the last command. */
             call0 (Qundo_auto__add_boundary);
 
+            /* Record point and buffer, so we can put point into the undo
+               information if necessary. */
+            point_before_last_command_or_undo = PT;
+            buffer_before_last_command_or_undo = current_buffer;
+
             call1 (Qcommand_execute, Vthis_command);
 
 #ifdef HAVE_WINDOW_SYSTEM
@@ -3313,14 +3319,12 @@ readable_events (int flags)
 #endif
                    ))
         {
-          union buffered_input_event *event;
-
-          event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE)
-                   ? kbd_fetch_ptr
-                   : kbd_buffer);
+          union buffered_input_event *event = kbd_fetch_ptr;
 
           do
             {
+              if (event == kbd_buffer + KBD_BUFFER_SIZE)
+                event = kbd_buffer;
               if (!(
 #ifdef USE_TOOLKIT_SCROLL_BARS
                     (flags & READABLE_EVENTS_FILTER_EVENTS) &&
@@ -3337,8 +3341,6 @@ readable_events (int flags)
                        && event->kind == BUFFER_SWITCH_EVENT))
                 return 1;
               event++;
-              if (event == kbd_buffer + KBD_BUFFER_SIZE)
-                event = kbd_buffer;
             }
           while (event != kbd_store_ptr);
         }
@@ -11372,7 +11374,7 @@ If an unhandled error happens in running this hook,
 the function in which the error occurred is unconditionally removed, since
 otherwise the error might happen repeatedly and make Emacs nonfunctional.
 
-See also `pre-command-hook'.  */);
+See also `post-command-hook'.  */);
   Vpre_command_hook = Qnil;
 
   DEFVAR_LISP ("post-command-hook", Vpost_command_hook,