I don't think it's fair to compare markup languages to programming languages, so we're down to F# and Coffeescript. That's not much of a trend toward significant whitespaces.
I agree with newlines vs semicolons (though I've always been told to write Javascript with semi-colons, and that's how I have encountered it in the wild).
> I don't think it's fair to compare markup languages to programming languages, so we're down to F# and Coffeescript. That's not much of a trend toward significant whitespaces.
I take your point about Haml, though Sass is actually Turing-complete, so I almost feel like it belongs in the list despite being really off-the-wall.
And I was only choosing from reasonably popular languages (so things like Boo are out even though they'd help my numbers). There just aren't that many mainstream programming languages out there. Four in a category seems like a pretty fair number to me. You could just as easily say functional programming isn't a thing if four mainstream languages is considered a paltry showing.
I agree with newlines vs semicolons (though I've always been told to write Javascript with semi-colons, and that's how I have encountered it in the wild).