Tab Completion Support

[remiscarlet]

Hey there,

Not sure if this is even possible as I'm not sure if pipes are sufficient enough of a mechanism to support this.

Request

Tab completion

Description

Running

• java -jar paper.jar
  drops us into a prompt where we can tab-complete available commands:
  

However, running the equivalent mc-server-runner command

• ./mc-server-runner java -jar paper.jar
  does not support tab-completion.
  

While sending full commands is supported with docker attach, it'd be useful to be able to leverage the graceful shutdown handling of this helper while also being able to have full console functionality.

Extra Info

It doesn't quite operate the same as it does some extra things beyond just pipes, but fwiw I have successfully started a server with raw java -jar commands and used reptyr to successfully take over the IO with tab-complete working. Basically I'm not sure if tab completion needs something that reptyr does that goes beyond just redirecting pipes etc.

btw thanks for all your work on these MC related images. They're awesome!

[remiscarlet]

Going through the itzg/minecraft-server documentation again, I see auto-completion is expected to be supported as per the Enabling Interactive Console page. I believe mc-server-runner is the mechanism by which that's done.

I followed the steps on that page as per below but still am not getting tab completion:

[Cirno(Remi)][~/tmp]> docker run \
    -d \
    -it \
    -p 26666:25565 \
    -v ./:/data \
    -e EULA=TRUE \
    --name mc \
    itzg/minecraft-server

[Cirno(Remi)][~/tmp]> docker attach mc
[18:12:56] [Server thread/INFO]: Done (14.346s)! For help, type "help"
[18:12:56] [Server thread/INFO]: Starting remote control listener
[18:12:56] [Server thread/INFO]: Thread RCON Listener started
[18:12:56] [Server thread/INFO]: RCON running on 0.0.0.0:25575
list
[18:13:00] [Server thread/INFO]: There are 0 of a max of 20 players online:
li
[18:13:01] [Server thread/INFO]: Unknown or incomplete command, see below for error
[18:13:01] [Server thread/INFO]: li     <--[HERE]

Where the last line shows the output of me typing li<tab><enter>

[itzg]

Resolved by #57

[itzg]

@remiscarlet make sure you have pulled the latest image. This is definitely working now.

[remiscarlet]

Oof, I must have had an unlucky cached image yeah. docker image rm'ing and repulling shows this working now.

Thanks!

[itzg]

I just noticed that vanilla minecraft may not actually support tab completion, but TYPE=PAPER definitely does.