Handle quirks mode in a better and more abstracted way.
In quirks mode, `<html>` might receive an 'overflow' event, but it is `<body>`
that is scrollable (and it does _not_ receive an 'overflow' event!) The
`ScrollableElements` class now automatically takes care of this case, storing
`<body>` instead if you try to store `<html>` in quirks mode. This way, only
actually scrollable elements are stored, which makes comparisons such as
`isScrollable` work without having to think about quirks mode. Previously, the
`isScrollable` check in the 'overflow' event handler failed on `<html>` in
quirks mode, making it impossible to scroll on quirky sites, such as Hackernews.
git://git.gir.st / VimFx.git / commit