Code formatting doesn't work when plugin is used.

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

Windows

What is the issue affecting?

Formatting, Plugins

Expected Behaviour

Code formatting should work when plugin is used.

Actual Behaviour

Code formatting doesn't work when plugin is used.

Reproduction steps

1. Create plugin and set the appropriate settings as described here https://github.com/LuaLS/lua-language-server/wiki/Plugins
2. Use it (create some file and use custom syntax)
3. Make some ugly indentation.
4. Alt+shift+f (Format document)
5. The code has not been formatted.
   

Additional Notes

As you can see the error occurs in VSC but I use LSP mainly as a server for my own client in React and the error also occurs there.

Log File

myLog.txt

Commencez par reproduire l’échec en suivant les étapes Visual Studio Code indiquées et en utilisant un plugin avec une syntaxe personnalisée. Comparez le comportement avec le myLog.txt fourni, y compris le rapport du React LSP client. C’est terminé lorsque le formatage applique l’indentation attendue aux fichiers utilisant une syntaxe définie par le plugin.