Subject: bug#15045: Point jumps inappropriately around time of Semantic lexing

From: Stefan Monnier <[email-masked]>
Date: Thu, 08 Aug 2013 14:06:28 -0400

>   sit-for(0)
>   display-time-event-handler()
>   apply(display-time-event-handler nil)
>   byte-code("[snipped]" [timer apply 5 6] 4)
>   timer-event-handler([t 20995 27860 0 60 display-time-event-handler nil nil 0])
>   accept-process-output()
>   semantic-c-lexer(2886 7946 nil nil)

Right, that would do it.
What happens if you remove the calls to sit-for from time.el?

        Stefan