Formatter deletes all code after certain syntax errors

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

Expected Behaviour

Code to be formatted without the rest of the code being deleted.

Actual Behaviour

On certain errors, the formatter seems to delete everything past the point of error (though it occasionally saves a few lines).

https://user-images.githubusercontent.com/39929480/218354165-e1ea3e06-8bfe-49e0-a1dc-5709738d6721.mp4

Reproduction steps

1. Create a test lua file
2. Write some lua code
3. At the very top, write anything = .... (I noticed just anything = will also cause issues)
4. Trigger a format run.
5. Watch your code disappear.

Additional Notes

I'm not sure of all the errors that will trigger code deletion, but the ones I am aware of is:

• anything = ....
• anything =
• anything = {x =}

So my initial assumption is that it just affects errors with assignments.

Log File

file_d%3A_test%20directory.log

Inizia riproducendo il problema con le assegnazioni malformate elencate nell’issue e ispeziona il file di log allegato. Traccia il percorso di formattazione per l’input con errori di sintassi; il lavoro è completato quando la formattazione preserva tutto il codice dopo l’errore continuando ad applicare la formattazione dove possibile.