Filenames beginning with "-" cause incorrect invocation of pandoc

[mbaynton]

Steps to reproduce

1. Create an R Markdown file whose name begins with a -, for example -3-something.Rmd
2. rmarkdown::render('-3-something.Rmd')

Result

processing file: -3-something.Rmd
                                                                                          
output file: -3-something.knit.md

/usr/bin/pandoc +RTS -K512m -RTS -3-something.knit.md --to html4 --from markdown+autolink_bare_uris+tex_math_single_backslash --output -3-something.html --lua-filter /home/mbaynton/R/x86_64-pc-linux-gnu-library/4.3/rmarkdown/rmarkdown/lua/pagebreak.lua --lua-filter /home/mbaynton/R/x86_64-pc-linux-gnu-library/4.3/rmarkdown/rmarkdown/lua/latex-div.lua --self-contained --variable bs3=TRUE --section-divs --template /home/mbaynton/R/x86_64-pc-linux-gnu-library/4.3/rmarkdown/rmd/h/default.html --no-highlight --variable highlightjs=1 --variable theme=bootstrap --mathjax --variable 'mathjax-url=https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML' --include-in-header /tmp/Rtmp0WU9RC/rmarkdown-str1bc8d4b28f56f.html 
Unknown option -3.
Unknown option --something.knit.md.
Try pandoc --help for more information.
Error: pandoc document conversion failed with error 2

Checklist

When filing a bug report, please check the boxes below to confirm that you have provided us with the information we need. Have you:

• formatted your issue so it is easier for us to read?

• included a minimal, self-contained, and reproducible example?

• pasted the output from xfun::session_info('rmarkdown') in your issue?

• upgraded all your packages to their latest versions (including your versions of R, the RStudio IDE, and relevant R packages)?

• installed and tested your bug with the development version of the rmarkdown package using remotes::install_github("rstudio/rmarkdown")?

[cderv]

Related issue at https://community.rstudio.com/t/error-pandoc-document-conversion-failed-with-error-6/171491/4

I think there the file start with (1) and we transform special character to -. Then this issue happens

[yihui]

I think we just need to shQuote() the pandoc_convert() input. I'll test it. That's not true. We need to add ./ before the paths instead.

[yihui]

Should be fixed now. Thanks for the report!

remotes::install_github('rstudio/rmarkdown')

[github-actions]

This old thread has been automatically locked. If you think you have found something related to this, please open a new issue by following the issue guide (https://yihui.org/issue/), and link to this old issue if necessary.