fill_exarg_from_cctx(exarg_T *eap, cctx_T *cctx)
{
    eap->getline = exarg_getline;
    eap->cookie = cctx;
}
fill_exarg_from_cctx(exarg_T *eap, cctx_T *cctx)
{
    eap->getline = exarg_getline;
    eap->cookie = cctx;
}