pandoc_options(to, from = rmarkdown_format(), args = NULL, keep_tex = FALSE, latex_engine = c("pdflatex", "lualatex", "xelatex"), ext = NULL)NULL
chooses default based on to). This is typically used to force
the final output of a latex or beamer converstion to be .tex
rather than .pdf.pandoc argument of the
output_format function.
from argument should be used very cautiously as it's
important for users to be able to rely on a stable definition of supported
markdown extensions.