[no repro] ATSynEdit: TFPSList.CheckIndex error

[ruma1974]

Thanks I have implemented and test the lexer and editor in the way you suggested and made several tests and I have not been able to trigger any error so far.

However, it would have been nice if I could just temporarily disable the timer while changing text.

[Alexey]

EControl adapter cannot disable its timer, because its parsing is long; later it will have threads..