Disable syntax highlighting when raw theme is set to none

[DrGo]

Description

There does not seem to be an obvious way to remove syntax highlighting from code (raw) blocks without altering the source.
It would be great if there is a way to disable syntax highlighting in Typst itself: e.g.,
#set raw(lang: none)

Use Case

The current solution (removing the language specifier from the source) interferes with other uses of that specifier, e.g., in mdbook, code blocks need to be annotated with the language specifier to enable e.g., testing the code blocks. The other solution #show raw.line: it => it.text seems hacky and not obvious. Most users will expect setting raw(lang:none) to disable syntax highlighting.

[Enivex]

Duplicate of #4182 I believe

[DrGo]

Sorry but I do not believe this is a duplicate
I am able to set lang to none; it just does not disable syntax highlighting, forcing the hack I mentioned above
https://typst.app/project/pIpd6tZZ3aPFZb6BSkXLfO

[laurmaedje]

@DrGo it's sort of a half-duplicate. the issue doesn't really describe the bug, but in the PR discussion for that issue, we've come to the conclusion that theme: none should disable highlighting. I guess we can reopen this issue to track that. See #4186 (review)

[DrGo]

I see.. thanks,

[DrGo]

@laurmaedje
Happy to close the issue... theme=none solves my problem. Thanks again

[laurmaedje]

theme: none isn't yet implemented though and the PR also doesn't directly implement it. Rather, it changes the default from none to auto because it's currently confusingly none even though it means default theme rather than no theme.

[DrGo]

Is anyone working on implementing theme:none? I could try to submit a PR if that's ok with you.

[laurmaedje]

I'm not aware of someone else working on it unless @Coekjan is. I merged #4186 now, so there shouldn't be a conflict with that.

[Coekjan]

I am not working on none theme. No conflicts with me.

To implement none, you could take a look at my changes it in #4186, and adapt the function signature for none.

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EDIT: I am trying to implement it.

[DrGo]

Thanks,
presumably, the theme should be now declared Smart<Option<EcoString>>and fn highlight(&self, styles: StyleChain) -> Vec<Packed<RawLine>> would be restructured to handle Smart::Custom(None). Right?
Anything else I should be aware of?

[Coekjan]

I am not working on none theme. No conflicts with me.

To implement none, you could take a look at my changes it in #4186, and adapt the function signature for none.

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EDIT: I am trying to implement it.

Here I edited the comment and the PR has been sent. @DrGo

[DrGo]

OK. Thanks