I've come to better solution for getting Jupyter-displayable tables to 
LaTex. Use kable to create an HTML representation and use kable again to 
create a LaTex representation. Build a “mimebundle” list with these two 
representations as elements. Use IRdisplay’s publish_mimebundle function to 
display. The HTML representation will be rendered when running Jupyter; the 
LaTex representation will be copied as-is by pandoc when converting from 
Jupyter-format to LaTeX-format.

x = data.frame(a=c(1,2,3), b=c(10,20,30), c=c(100,200,300))
x.html = kable(x, format=“html”, escape=FALSE, align=rep(“r”, ncol(x)), 
caption=“This is from HTML”, row.names=FALSE, 
table.attr=“style="white-space: nowrap;"”)
x.latex = kable_styling(latex_options=c(“hold_position”),
kable(x, format=“latex”, escape=FALSE, align=rep(“r”, ncol(x)), 
caption=“This is from LaTex”, row.names=FALSE))
mbx = list(data=list(“text/html”=as.character(x.html), 
“text/latex”=as.character(x.latex)), metadata=NULL)
publish_mimebundle(mbx$data, mbx$metadata)

On Thursday, July 21, 2022 at 1:33:34 AM UTC-7 wlu...-QSt+ys/nuMyEUIsrzH9SikB+6BGkLq7r@public.gmane.org 
wrote:

> > Last time I looked Pandoc's AST couldn't represent nested tables anyway.
>
> Surely a table cell <https://pandoc.org/lua-filters.html#type-cell>'s 
> contents is a list of blocks (which can include tables). What about this 
> markdown example (butchered from two of the examples in the manual)?
>
> +---------------+---------------+--------------------+
> | Fruit         | Price         | Advantages         |
> +===============+===============+====================+
> | Bananas       | $1.34         | - built-in wrapper |
> |               |               | - bright color     |
> +---------------+---------------+--------------------+
> | Oranges       | $2.10         | - cures scurvy     |
> |               |               | - tasty            |
> +---------------+---------------+--------------------+
> | Apple (pi)    | $3.14         | | One | Two   |    |
> |               |               | |-----+-------|    |
> |               |               | | my  | table |    |
> |               |               | | is  | nice  |    |
> +---------------+---------------+--------------------+
>
> [image: Screenshot 2022-07-20 at 23.36.36.png]
>
> On Wed, 20 Jul 2022 at 22:37, BPJ <b...-J3H7GcXPSITLoDKTGw+V6w@public.gmane.org> wrote:
>  
>
>> Den tis 19 juli 2022 22:33Richard Huntsinger <rhunt...-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> 
>> skrev:
>>
>>> I’ve successfully converted Jupyter HTML-format simple tables to 
>>> LaTex-format tables using pandoc.read(raw.text, ‘html’).blocks in a lua 
>>> filter.  The resulting LaTex is \begin(longtable} …  That’s okay for simple 
>>> tables, but longtable does not support nested tables, which I do need.
>>>
>>> How to convert to LaTex tabular tables (which supports nested tables) 
>>> rather than to longtable tables (which does not)?  Or is there some other 
>>> solution to converting nested tables? 
>>>
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>>> .
>>>
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