anchor.diff:    (write-all! path (concat data "\n")))
   
   (defun write-bytes! (path data)
  -  "Writes the bytes (list of numbers) `data` to the file at `PATH`.
  +  "Writes the bytes (list of numbers) `data` to the file at PATH.
      Creates a new file if it doesn't exist and overwrite the file if it does.
      Returns true if it succeeded or false if it failed.
   
  
positive.code:   (read-all-mode! path false))
  
  (defun read-lines! (path) 
    "Reads the lines from the file at `PATH` and returns it as a list of strings.
     Returns nil if it failed.
  
     ### Example
  
negative.code:   (write-all-mode! path false false data))
  
  (defun write-lines! (path data)
    "Writes the lines (list of strings) `data` to the file at PATH.
     Creates a new file if it doesn't exist and overwrite the file if it does.
     Returns true if it succeeded or false if it failed.
  
  