Adding Luau Language

[MonzterDev]

Hey, it's likely quite a niche case, but I was curious if there was any interest in adding Luau to the compatible languages. This is Roblox's open-source fork of Lua, which can be found here: https://github.com/Roblox/luau

[KevinBatdorf]

How different is it from Lua? Their official docs just use the Lua grammar for their code examples. See here: https://luau-lang.org/syntax

Here's how Lua looks (you can edit the code with your own to see an example): https://code-block-pro.com/themes?theme=andromeda&lang=lua

But for adding it, I just need a link to the grammar file, which is usually a .tmLanuage file, but could be .json. Or a link to a VS Code extension page. I submit them upstream to shiki, and it sometimes takes a few weeks before they are released.

[MonzterDev]

Hey, I really appreciate the quick response!

They're very similar, but Luau has a few different features, and I imagine this will only grow with time.

For instance, they recently added String Interpolation:

local world = "world"
local string1 = `Hello {world}!`

They've also recently added an if-then-else expression:

local x = if FFlagFoo then A else B

I was unable to find a grammar file from their website or repo, but they do have a grammar page: https://luau-lang.org/grammar

In addition to the page, there are also two VS Code extensions which hopefully will suffice:
https://marketplace.visualstudio.com/items?itemName=JohnnyMorganz.luau-lsp
https://marketplace.visualstudio.com/items?itemName=UnderMyWheel.roblox-lua

[KevinBatdorf]

This one looks right. I'll look into whether its possible to add this directly to the plugin, but if not then it might take a couple of weeks or more before they tag a release in the main repo.

https://github.com/JohnnyMorganz/luau-lsp/blob/main/editors/code/syntaxes/Luau.tmLanguage.json

I'll follow up this weekend though

[KevinBatdorf]

I added a PR to the main library to add the language, now just need to wait for them to make a release.

I attempted to sideload the language but it just woulnd't load in no matter what I tried. I guess it's buggy.

I'll follow up here when it's merged in, but might be a few weeks.

[MonzterDev]

I'm so glad to hear. Thanks so much for the professional and swift handling of this!