Converting pre 2.1 HAProxy code to be 2.1 compliant (vscode)

Hey Guys,

I got a little problem with a small piece of code which I wondered if anyone had an idea how to convert this to be HAProxy v2.1+ compliant.

I have used this code for the past year or so without issues, it rewrites the url so it works with code-server and supporting multi users based on /u/username scheme.

I have tried several versions but I am not winning.

Exact line which I believe needs changing:
reqrep ^([^\ :]*)\ /u/majestic/(.*) \1\ /\2

Below I am enclosing the full config in case its somewhere else. If anyone has any ideas or how to write this better, I would really love to hear form you. Thank you.

Full HAProxy code

  # vscode (majestic)
  acl vscode_majestic hdr(host) -i coder.example.io
  acl vscode_majestic_req path_beg /u/majestic/
  acl vscode_majestic_req path /u/majestic/
  http-request redirect scheme https drop-query append-slash if { path -m str /u/majestic }
  use_backend vscode_majestic if vscode_majestic_req

# vscode (majestic)
backend vscode_majestic
  redirect scheme https if !{ ssl_fc }
  reqrep ^([^\ :]*)\ /u/majestic/(.*)     \1\ /\2
  server vscode01 172.27.1.102:8081 check

VS Code server systemd script

[Unit]
Description=Visual Studio Code Server (majestic)
After=network.target

[Service]
EnvironmentFile=/data/coder/majestic/.env
ExecStart=/data/coder/majestic/bin/code-server --base-path /u/majestic --host 0.0.0.0 --port 8081 --user-data-dir /data/coder/majestic/user-data /data/coder/majestic/projects
User=majestic
Restart=always
RestartSec=1

[Install]
WantedBy=multi-user.target

Versions I have tried:

http-request replace-path ^([^\ :]*)\ /u/majestic/(.*)     \1\ /\2
http-request set-path "%[path,regsub(^/u/majestic/,/)]"
http-request replace-path ^([^\ ]*\ /)u/majestic[/]?(.*)     \1\2

Any tips/advise, I would be extremely grateful.

Kind Regards,

Majestic

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