CHHDR_USER
CHHDR_CHECK | CHHDR_USER,
if (bitset(pflag, CHHDR_USER) || bitset(pflag, CHHDR_QUEUE))
if (bitset(pflag, CHHDR_USER))
if (!bitset(pflag, CHHDR_USER) && *p == '?')
ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e);