Network.Parser.Rfc2234
vcharPred
bitPred
alphaPred
loalphaPred
upalphaPred
charPred
ctlPred
dquotePred
digitPred
hexdigPred
htPred
lfPred
spPred
wsp
vchar
sp
octet
lwsp
lf
ht
hexdig
digit
dquote
ctl
crlf
cr
char
bit
upalpha
loalpha
alpha
manyN
manyNtoM