Bug with groundMarkers.lua code

I was trying to use the getPathLength function in groundMarkers.lua for a mod I'm creating but it wasn't working. And I found two bugs with the code (doesn't seem like it was even tested...). One issue is that the sqrt function isn't a global function and should be calling math.sqrt instead, but this doesn't fix the problem and calling this function shouldn't be needed. The biggest issue is that the formula for calculating the path length is wrong since:

sqrt(a^2 + b^2) != a + b

So the code should change from:

Code:

local function getPathLength()
  local sqrDist = 0
  local path = M.routePlanner.path
  local pathLength = tableSize(path)
  for i = 1, (pathLength - 1) do
    sqrDist = sqrDist + (path[i + 1].pos - path[i].pos):squaredLength()
  end
  return sqrt(sqrDist)
end

to:

Code:

local function getPathLength()
  local dist = 0
  local path = M.routePlanner.path
  local pathLength = tableSize(path)
  for i = 1, (pathLength - 1) do
    dist = dist + (path[i + 1].pos - path[i].pos):length()
  end
  return dist
end