Disable parse rule within a template

[Soren Bjornstad]

Using the official KaTeX plugin, I am hoping for a way to disable KaTeX rendering in a tiddler when rendering that tiddler using a specific template.

Use case: I'm programmatically extracting HTML content from TiddlyWiki by using Node to render it through a template, but I want to preserve the math notation specifically as is because the target system already natively supports LaTeX within $$ delimiters. (If I don't do anything special to the math fragments, I get a corrupted version of the markup shown twice in my output!)

I see that KaTeX is implemented as an inline parse rule, `latex-parser`, but I don't want to turn that off globally, because I still want the markup to render normally when viewing the wiki, just not when extracting content from it. The `\rules except` pragma doesn't appear to disable the rule in tiddlers transcluded into a tiddler, only within that exact tiddler. Is there some other way to adjust the parse rules?

[Jeremy Ruston]

Hi Soren

If you’re working on Node.js then the easiest way to approach this might be to set up two wiki folders with the same content (see how editions/tw5.com-server inherits the content from editions/tw5.com in the core repo), with one of them lacking the KaTeX plugin. You’d then use that wiki for your static renderings.

Best wishes

Jeremy

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