Overriding html-language-features in extension

[batisteo]

I’m writing an extension that support the Django template language. The id of the language is django-html and when it’s set this way, I’m losing the nice features given by HTML Language Features bundled extension.

On the other hand, if I set the language id as html, I’ve got my syntax, the auto-indentation and others, but I (and users) are losing the ability to switch to plain html.

This issue seems similar to #28145 but it’s not about embedding HTML here, nor injecting, as far as I understood.

I see that in html-language-features/client/src/htmlMain.ts the auto-indent is loaded based on hardcoded language id html.

What would it be the best way to use these features in a different language id?
And what if I want to add more indentation rules?

I opened a question on Stack Overflow as well.

[aeschli]

Please have a look at #47288.
Clearly, you want to define your own language (django) along with a text mate grammar and language configuration.
You will need code with a scanner/parser that understands the django templating language
and can extract HTML out of the django document.
Having that you can either

• create this as a virtual html document and forward requests to the HTML language server.
• embed libraries to your language server that handle these calls.

[aeschli]

We also have #49210, which aimes for a simpler, ideally configuration based approach.

[batisteo]

Thanks @aeschli for the pointers, I totally missed those. I’ll have a close look.

[batisteo]

Either way, that’s a bit overwhelming for me yet.