Re: Profiling font-lock in xemacs

[Richard Stallman]

Emacs does not do very much in signal handlers now.  For sigchld it
just records the status, something that is best done right away.
XTread_socket is complex; if some of that can be done later on, that
might be good.  But it can't wait too long.  For instance, quit has to
be detected reasonably soon.  Perhaps the QUIT macro could run the
code to process the input.

On the other hand, this code works; we have had little problem with
it for a long time.