Re: show-paren-mode prevents page-down from displaying next 1/2 page.

[Chong Yidong]

"Maguire, Andrew (GE Infra, Energy)" <address@hidden> writes:

> However, the situation I have now uncovered seems to be related to
> an overlay being left behind after scroll event and then the next
> scroll event finds this overlay, removes it but this causes an extra
> window redisplay and thus a recenter when one was not
> expected. Point is moved to the correct place. Therefore, my
> suspicion is that it is related to the new when test preventing the
> deletion of a previous overlay when one is needed but it is outside
> the new window's bounds. I suspect that the when clause needs to
> always set the pos variable if dir is set but only set the mismatch
> variable using the test with window-start.

I checked in a different fix.  This should clear up the recentering
problems when using show-paren-mode.