Code output does not work when using a seperate boilerplate / setup file

[stephlocke]

I like to have my styles for document in a separate file that can be accessed by any document I produce. Unfortunately, this seems to interfere with knitr's ability to add the correct LaTeX packages to the .tex file to then be converted to PDF when trying to output the source code.

I have produced a MWE at https://github.com/stephlocke/knitrhighlighting which shows how using an off file setup doc (rootdoc.Rnw) errors whilst including the content (rootdoc2.Rnw) does not.

Ideally, knitr should add any package setup after an \include{} or \input{} statement if it appears before \begin{document}

[yihui]

knitr needs the \documentclass{} line so that it can add the required LaTeX preamble.

[stephlocke]

I can confirm that adding the \documentclass{} statement, whilst not ideal, does work 👍

Thanks for getting back to me

[github-actions]

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