Metrics-related crashes in branch

[Pavel Sanda]

On Thu, Jan 09, 2025 at 03:22:34PM +0100, Jean-Marc Lasgouttes wrote:
> Le 21/12/2024 ?? 19:15, Pavel Sanda a écrit :
> > Actually you are right, once the figures are loaded, the caret tends to
> > stay on similar position of the screen. But not initially, it probably
> > gets shifted by the onloading of images above.
> 
> I pushed a solution to master at 0fa3aba5c6e, if it works well it should go
> to branch too. Most of the patch is an improvement, I only have a doubt
> about Cursor::saveBeforeDispatchPosXY, but the return value was probably
> bogus in cases that assert now.
> 
> The big issue here is to know whether there can be cases where the cursor is
> out of screen, either from the preview trick or maybe scrolling without
> "cursor follows scrollbar". I am still unsure about what we have to fear,
> there are places in code (look at calls to getPos()) that have a crash
> potential.

JMarc, unless you have some other fix in mind we should perhaps backport?

Pavel