Re: [vim/vim] long lines automatically become foldable even with set nowrap (Issue #21000)

cjxgm left a comment (vim/vim#21000)

> I am not sure if we change this behaviour it may annoy users.

So maybe a new option is required?

But, it's just a surprise seeing some lines unexpectedly folds when you set a foldexpr (and the folds expands to a single line, because of set nowrap), leaving you wonder whether you have a buggy foldexpr. It took me quite a while to realize it was related to line-wrapping.

> Since you cannot have wrapped and non-wrapped lines at the same time, why not set foldminlines to a really high number if you are using non-wrapped lines?

Because that would make legitimate foldable lines non-foldable. For example:

```vimscript
set nowrap
set foldmethod=expr
set foldexpr=getline(v:lnum)=~'^\\s'?1:0
set foldminlines=99
```

With these settings, I'd expect indented lines can be folded by `zc`, and long lines cannot be folded by `zc`.
But these settings actually make all lines non-foldable.


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