let g:lcn_fzf_options = "--delimiter ':' --preview-window '+{2}-20' --expect 'ctrl-t,ctrl-x,ctrl-v'"

function! LcnFzfSelectionUI(source, sink) abort
    return fzf#run(fzf#wrap(fzf#vim#with_preview({'source': a:source, 'options': g:lcn_fzf_options})))
endfunction

let g:LanguageClient_selectionUI = function('LcnFzfSelectionUI')