> But I'm struggling to find the right combination of events/whatever to fire when the visible part (viewport?) of a buffer changes. For example, as a result of a page down, normal mode G jumping to the end of the buffer, gg to go to the top, etc. I want to use such an event to call matchaddpos to highlight the now-visible part of the buffer (which keeps the number of calls to matchaddpos down).
Apologies - it seems I've been making a basic error in my use of winsaveview(); using that in combination with CusorMoved, CusorMovedI, winheight() and winwidth() gets me a lot of the way there.
The one remaining case I can't currently handle is when the size of a split changes: I need to somehow trigger the change in viewport for all buffers affected by, for example, moving the horizontal/vertical split point.
Again, any pointers much appreciated.
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