Re: Did something change with respect to Emacs idle loop:

[Andreas Seltenreich <seltenreich@gmx.de>]

"T. V. Raman" <raman@users.sf.net> writes:

> Another situation where I've noticed changed behavior is with
> emms (2.1) --- if you launch a playlist  then playback stops
> after each track, and you again need to touch the keyboard  for
> it to move to the next track.

Could this be related to the recently-fixed fontification loop
problem?  When investigating with gdb, I noticed that Emacs didn't
leave the following loop in wait_reading_process_output() since
timers_run was repeatedly increased during redisplay, and execution
didn't ever reach the select().

--8<---------------cut here---------------start------------->8---
	  do
	    {
	      int old_timers_run = timers_run;
	      struct buffer *old_buffer = current_buffer;

	      timer_delay = timer_check (1);

	      /* If a timer has run, this might have changed buffers
		 an alike.  Make read_key_sequence aware of that.  */
	      if (timers_run != old_timers_run
		  && old_buffer != current_buffer
		  && waiting_for_user_input_p == -1)
		record_asynch_buffer_change ();

	      if (timers_run != old_timers_run && do_display)
		/* We must retry, since a timer may have requeued itself
		   and that could alter the time_delay.  */
		redisplay_preserve_echo_area (9);
	      else
		break;
	    }
--8<---------------cut here---------------end--------------->8---

HTH
Andreas