Email grammar too complex (Lpeg 0.12)

[daurnimator]

After filing Issue #1 I upgraded my lpeg:

$ lua -l lpeg -e "print(lpeg.version())"
0.12

Now I get an entirely different error :)

$ lua ../LPeg-Parsers/email.lua
lua: bad argument #1 to '?' (grammar has too many rules)
stack traceback:
        [C]: ?
        [C]: in function 'match'
        /usr/local/share/lua/5.1/re.lua:208: in function </usr/local/share/lua/5.1/re.lua:206>
        (tail call): ?
        [C]: ?

[spc476]

The code here was developed under LPeg 10.2. I haven't tried with anything newer.

[daurnimator]

I might send something to lua-l then?

[spc476]

It was thus said that the Great daurnimator once stated:

I might send something to lua-l then?

I was planning on doing the same thing. I just wanted to double check
that it ran under LPeg 0.10 (which it does).

[spc476]

Ah, I see you got there first. Thanks.

[spc476]

It's a limitation with LPeg 0.12. I'm closing the issue as it's now in the hands of the LPeg developers.

[daurnimator]

All good :)

[aklt]

I ran into what I think is the same or at least a similar issue and
would like to use this parser, so consider this a note.

# lua -v
Lua 5.3.3  Copyright (C) 1994-2016 Lua.org, PUC-Rio
# lua -l lpeg -e "print(lpeg.version())"
1.0.0

If I run

print(inspect(email:match(myEmail)))

on the email in the example it causes a core dump on my machine and gdb shows that there
is a huge stack from somewhere in lpeg.so.

A simmilar bug is described here, but not fixed in lpeg 1.0.0:

http://lua-users.org/lists/lua-l/2016-09/msg00155.html

http://lua-users.org/lists/lua-l/2016-09/msg00189.html

[spc476]

It works with LPeg 1.0.1. I've updated the rockspec so if you use LuaRocks, it should be an easy to reinstall both.

[aklt]

Cool, thanks!