Is there any update?

That's not what you said - you said loading single player games in multiplayer.

It looks like my pool English leads to some misunderstood. I'll describe what I am doing:

1. Start a new game in MP
2. With the host's settings, my mod will move some players to a 'guest' group, which nearly can't ...

As my test, loading a multiplayer game at singleplayer would not give the player admin permission, for he can't run /permissions.

edit:
The player had been added to a permission group already.

Because I'm working on a permission system, i'd like to let the people who load saves from singleplayer have admin and all permissions. Is that possible?

Is there any update?

So when will you turn to Allegro 5.2

FYI, here is a method to support IME in Allegro 5.1

https://github.com/fy0/a5ime

Windows. I have Linux and Mac envirement, but did not play the game on them. I'll make a test tomorrow.

Usually, multibyte languages included Chinese, Japanese, Korean uses IME (Input Method Editors) to type its characters. Now the words can be copied and pasted in Factorio, but cannot be typed directly with an IME.