lex
ignore / ' ' /
token line /[^ \n] [^\n]* '\n'/
end
def g
I: int
[g line]
| []
new Output: parser<g>()
send Output " hello friend
G: g = Output->finish()
G.I = 1
send stdout [ postfix( G ) ]
##### EXP #####
r g 21 1 0
t line 5 1 2 1 hello\20friend\0a
r g 21 0 2