EF_WARNING
{ "WARNING", EF_WARNING },
if (!bitset(EF_WARNING|EF_RESPONSE, e->e_flags) &&
e->e_flags |= EF_WARNING;
e->e_flags |= EF_WARNING;
bitset(EF_WARNING, flags)
flags |= EF_WARNING;
if (bitset(EF_WARNING, e->e_flags))
else if (bitset(EF_WARNING, e->e_flags))