LSP completion repeats character in gdscript

[rcorre]

Summary

I'm editing the following .gd file:

extends Node

func _ready() -> void:
	var n := Node.new()

Below the last line, I type if n.h<tab><tab> quickly. It completes to if n.hhas_method instead of if n.has_method. This does not happen if I press <tab> more slowly.

Reproduction Steps

I tried this:

1. hx Example.gd
2. ge
3. O
4. <tab>
5. if n.h<tab><tab> (quickly)

I expected this to happen:
if n.has_method
Instead, this happened:
if n.hhas_method

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

[helix.log](https://github.com/helix-editor/helix/files/10680425/helix.log)

For comparison, here's the nvim LSP log for the same operation:

nvim.log

Platform

Linux

Terminal Emulator

st 0.8.5

Helix Version

22.12-231-g23ed8c12

[sudormrfbin]

Fixed by #1819, and I think there was already an issue open about it but can't find it right now.

[sudormrfbin]

Duplicate of #4851.