Bug in (de)serialization with E2 includes

[CaptainPRICE]

The following error appears:
sv: (lib/whatever)Unknown character found (\) at line 1, char 7

Steps to reproduce:

• Spawn the following E2:

  main.txt

  print(1)
  #include "lib/whatever"
  print(3)

  lib/whatever.txt

  print("[whatever] Line 1")
  print("[whatever] Line 2")

• Create the dupe of the spawned E2.

• Open the dupe from the saved file (important).

• Paste the saved dupe.

I have inspected the contents of the dupe (text) file quickly, and it seems like " chars from the main code/file are replaced with £ char, and newline is being replaced via € char.
But, if you look at the code of the lib/whatever, you will see it didn't make those replacements on #include'd codes, it is seems like it is saving it using string.format("%q", contents_of_included_code).
I have tried to manually fix the dupe file, by doing replacements for the included code, but it seems to be non-fixable.
There's some bug with how E2 with #includes are being (de)serialized.

Here's the saved dupe file for faster bug reproduce:
e2_with_include.txt

[CaptainPRICE]

Probably something has to be fixed in the following file:
https://github.com/wiremod/advduplicator/blob/master/lua/autorun/serialiser.lua