Re: LPeg back captures

[Andrew Starks <andrew.starks@...>]

On Wed, Oct 23, 2013 at 10:10 PM, Sean Conner <sean@conman.org> wrote:
>> >         DIGIT        = R"09"
>> >         delim_char   = P"!" -- Cb("delim")
>> >         flags        = P"i"
>> >         backref      = P"\\" * DIGIT
>> >         escapeddelim = P"\\" * delim_char
>> >         anychar      = P(1) - delim_char
>> >         string       = (escapeddelim + anychar)^1
>> >         repl         = C((string + backref)^0)
>> >         ere          = C((P(1) - delim_char)^0)
>> >         idelim_char  = Cg(P"/" + P"!" + (P(1) - (DIGIT + flags)),"delim")
>> >         regexp       = Ct(
>> >                             idelim_char
>> >                             * Cg(ere,"re")
>> >                             * delim_char
>> >                             * Cg(repl,"replace")
>> >                             * delim_char
>> >                             * Cg(flags^0,"flags")
>> >                          )

Man... I'm sorry. I thought I was pretty sure on this. I did some
tests on a simpler example and I was wrong again. Order of declaration
doesn't matter....


```
lpeg = require'lpeg'

P, Cg, Cb, C = lpeg.P, lpeg.Cg, lpeg.Cb, lpeg.C

the_forb_back_there = Cb("forb")
forb_cap = Cg(P(P"foo" + "bar"), "forb")

main_patt = C(forb_cap * (P(1))^1 * the_forb_back_there)

print(main_patt:match("barnillydissle"))
-->barnillydissle bar
```

bar is coming out as a separate return value.... I think that may be
the problem. I'm gonna dig more.