Re: Signal `quit' in a `font-lock-fontify-region-function'

[Stefan Monnier <monnier@iro.umontreal.ca>]

> Error during redisplay: (jit-lock-function ##) signaled (quit)

This is indeed the behavior I expect (tho I don't really like it, but
I never dared to change jit-lock to set inhibit-quit).

> sometimes it doesn't.

Is there a difference in behavior in this respect when you try it in the
GUI vs in a tty?  How 'bout in another OS?

Does it happen more often if you wait a while until you starting banging
on C-g?  E.g. it might be that the event buffer is full (see patch below)?


        Stefan


diff --git a/src/keyboard.c b/src/keyboard.c
index 5f2b7afe6d..405790312d 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -3568,12 +3568,15 @@ kbd_buffer_store_buffered_event (union buffered_input_event *event,
         {
           /* Don't read keyboard input until we have processed kbd_buffer.
              This happens when pasting text longer than KBD_BUFFER_SIZE/2.  */
+          fprintf (stderr, "Too many pending events, putting keyboard on hold!\n");
           hold_keyboard_input ();
           unrequest_sigio ();
           stop_polling ();
         }
 #endif	/* subprocesses */
     }
+  else
+    fprintf (stderr, "event buffer full: dropping event!\n");
 
   Lisp_Object ignore_event;