!(p <= data+len-sizeof(sel_nl) &&
!memcmp(p, sel_nl, sizeof(sel_nl))))
p++;
!(p <= data+len-sizeof(sel_nl) &&
!memcmp(p, sel_nl, sizeof(sel_nl))))
p++;
if (p <= data+len-sizeof(sel_nl) &&
!memcmp(p, sel_nl, sizeof(sel_nl))) {
back->send ("\r", 1);
if (p <= data+len-sizeof(sel_nl) &&
!memcmp(p, sel_nl, sizeof(sel_nl))) {
back->send ("\r", 1);