class Mustache::Parser

def position
  # The rest of the current line
  rest = @scanner.check_until(/\n|\Z/).to_s.chomp
  # What we have parsed so far
  parsed = @scanner.string[0...@scanner.pos]
  lines = parsed.split("\n")
  [ lines.size, lines.last.size - 1, lines.last + rest ]
end