From: Karl Heuer <kwzh@gnu.org>
Date: Fri, 8 Apr 1994 05:59:03 +0000 (+0000)
Subject: (kbd_buffer_get_event): Make buffer_switch_event lispy.
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(kbd_buffer_get_event): Make buffer_switch_event lispy.
(record_asynch_buffer_change): New function.  Enqueue the event.
---

diff --git a/src/keyboard.c b/src/keyboard.c
index f09b7fadbc2..dcda52ba441 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -2008,6 +2008,12 @@ kbd_buffer_get_event ()
 	  kbd_fetch_ptr = event + 1;
 	}
 #endif
+      else if (event->kind == buffer_switch_event)
+	{
+	  /* The value doesn't matter here; only the type is tested.  */
+	  XSET (obj, Lisp_Buffer, current_buffer);
+	  kbd_fetch_ptr = event + 1;
+	}
       /* Just discard these, by returning nil.
 	 (They shouldn't be found in the buffer,
 	 but on some machines it appears they do show up.)  */
@@ -3250,6 +3256,14 @@ gobble_input (expected)
     read_avail_input (expected);
 #endif
 }
+
+record_asynch_buffer_change ()
+{
+  struct input_event event;
+  event.kind = buffer_switch_event;
+  event.frame_or_window = Qnil;
+  kbd_buffer_store_event (&event);
+}
 
 #ifndef VMS