function is_absolute_path(path)
  local os_path_separator = package.config:sub(1,1)
  if os_path_separator == '/' then
    -- POSIX systems permit backslashes in filenames
    return path:sub(1,1) == '/'
  elseif os_path_separator == '\\' then
    local f = path:sub(1,1)
    return f == '/' or f == '\\'
  else
    error('What OS is this? LÖVE reports that the path separator is "'..os_path_separator..'"')
  end
end
function is_relative_path(path)
  return not is_absolute_path(path)
end

  local os_path_separator = package.config:sub(1,1)
  if filename:sub(1,1) ~= os_path_separator then
    filename = love.filesystem.getWorkingDirectory()..os_path_separator..filename

  if is_relative_path(filename) then
    filename = love.filesystem.getWorkingDirectory()..'/'..filename  -- '/' should work even on Windows

  local os_path_separator = package.config:sub(1,1)
  if filename:sub(1,1) ~= os_path_separator then
    filename = love.filesystem.getWorkingDirectory()..os_path_separator..filename

  if is_relative_path(filename) then
    filename = love.filesystem.getWorkingDirectory()..'/'..filename  -- '/' should work even on Windows

function is_absolute_path(path)
  local os_path_separator = package.config:sub(1,1)
  if os_path_separator == '/' then
    -- POSIX systems permit backslashes in filenames
    return path:sub(1,1) == '/'
  elseif os_path_separator == '\\' then
    local f = path:sub(1,1)
    return f == '/' or f == '\\'
  else
    error('What OS is this? LÖVE reports that the path separator is "'..os_path_separator..'"')
  end
end
function is_relative_path(path)
  return not is_absolute_path(path)
end