Re: extension to string.gmatch (structural regular expressions)

[Shmuel Zeigerman <shmuz@...>]

Javier Guerra wrote:
> On 1/3/08, Duncan Cross <duncan.cross@gmail.com> wrote:
> > Here's a first attempt at a splitting gmatch:
>
> here's one of the best... this is a recurring thread!
>
> http://lua-users.org/lists/lua-l/2006-12/msg00414.html

It seems, Rici's function can be further simplified by not passing 
'self' around:

function string:split(pat)
  local st, g = 1, self:gmatch("()("..pat..")")
  local function getter(segs, seps, sep, cap1, ...)
    st = sep and seps + #sep
    return self:sub(segs, (seps or 0) - 1), cap1 or sep, ...
  end
  return function()
    if st then return getter(st, g()) end
  end
end

--
Shmuel