Single-line folds aren't handled

[romgrk]

Neovim version (nvim -v | head -n1)

0.8.0-dev

Operating system/version

archlinux

How to reproduce the issue

Open a file with single line folds and close all folds.

local dict = {
    a = 1,
    b = {
        c = 2,
    },
    d = { e = 3 }
}

Expected behavior

All folds use the ufo style.

Actual behavior

[kevinhwang91]

Expected. Show a use case for single fold line please.

[romgrk]

None, but it's annoying that some folds have a different style when I close them all.

[kevinhwang91]

set foldminlines=1 will never close the single folded line.

[romgrk]

Got it, thanks.