Re: [Emacs.app dev]: ghost cursor problem is still there

[Adrian Robert]

On Jul 22, 2008, at 9:41 AM, David Reitter wrote:

> Well, if someone could explain why redisplay noticed a change in - 
> >cursor_off_p in Carbon or X, but not in NS, then that would already  
> be helpful.  I don't think enabling the original blink-cursor-mode  
> will be difficult, and you get a lot of functionality for free that  
> way.

I think this might be due to differences in event loop handling  
between NS and the other ports.  I've summarized the NS port approach  
to event loop integration and a few other areas in nextstep/DEV-NOTES.

Basically, the NS port does not poll for events, but goes into a loop  
where only a timeout firing or a user event will return control to  
emacs.  (Sometimes the timeout period is specified by emacs itself.)   
I'm guessing that maybe waiting for events is supposed to be  
interrupted (for a redisplay pass) when emacs internally decides to  
change the cursor state, but this interrupting is not happening for  
some reason.