ometa G {
  num  = anything:n -> (self.acc += n),
  nums = num*
}
G.acc = ""


G.matchAll([1, 2, 3, 4], "nums") 
G.matchAll("1 2 3 4", "nums")
G.matchAll("1234", "nums") 

ometa N {
  num  = anything:n -> (self.acc += n),
  nump = ' ' num | num   ,
  nums = nump*
       
}
N.acc = ""


N.matchAll([1, 2, 3, 4], "nums")   [1, 12, 123, 1234]
N.matchAll("1 2 3 4", "nums")  [1, 12, 123, 1234]
N.matchAll("1234", "nums")  [1, 12, 123, 1234]



ometa M {
  num  = anything:n -> (self.acc += n),
  nums = num ' ' nums
       | num 
}

M.acc = ""

M.matchAll("1 2 3 4", "nums")   1234