" Save value of 'hlsearch' into a variable, and disable it
function! insert_suspend_hlsearch#() abort
  let s:hlsearch = &hlsearch
  set nohlsearch
  autocmd insert_suspend_hlsearch InsertLeave *
        \ let &hlsearch = s:hlsearch
        \|autocmd! insert_suspend_hlsearch InsertLeave
endfunction