function escape(s)
  return (s:gsub('\'', '\'\\\'\''))
end

local function copy_subs()
    local subs = mp.get_property('sub-text')

    if type(subs) ~= 'string' then
        return
    end

    subs = subs:gsub('\n', '')
    local a = "export LANG=en_US.UTF-8; echo '" .. escape(subs) .. "' | xclip -selection c"
    os.execute(a)

    mp.osd_message('Subs copied.')
end

mp.add_key_binding('ctrl+c', 'ctrl+c', copy_subs)