Question

Okey, I agree – the title is useless. The thing is, I have no idea how to put this into a one liner…

What I’m trying to do is to map the space key so that it serves as a :nohl mapping, but at the same time, when it is on a folded line, to serve as a za in normal mode (open/close fold).

Is this even possible?

What I’m having trouble is distinguishing between the two – is there a way to “detect” a folded line below the cursor, or to detect an incremental search “currently in progress” (as in, there is something highlighted)?

Or am I tackling this in a completely wrong way? All advices welcomed!

Answer 1

Reusing ideas from Andy Rk:

function! FoldSetWithNoHL()
    set nohls
    if (foldclosed(line('.')) >= 0)
        exe "normal za"
    endif
endfunction

map <space> :silent! call FoldSetWithNoHL()<cr>