Earlier quoted context omitted.
... And in GNOME’s Nautilus, Sushi https://gitlab.gnome.org/GNOME/sushi does popup previews on spacebar more or less like the GP describes. (Though the whole thing, while useful in practice, feels like essentially a workaround for unnecessarily heavy and app-centric UIs. Having both an “Open” command and an “Open, but faster and does less” command feels like humans succumbing to the needs of computers, not computers…
> Though the whole thing, while useful in practice, feels like essentially a workaround for unnecessarily heavy and app-centric UIs. Right, I'm sometimes puzzled by how people approach their personal "deal-breakers" that prevent Mac->Lin (or Win->Lin) switch. Many of the issues are presented as though they are bugs or clear-cut missing features, but are in fact subjective preference statements. In this case the "spac…
Many of them were asking for email preview popups directly from the inbox. Instead of implementing it, he realized the need wasn't for a popup but for a wait to see your email quickly. The real issue was that it was slow when you clicked on an email, so he made it fast instead.