inline-code in markdown tables adds an unwanted `\tab`

[pat-s]

#' @title test fun
#'
#' @description test.
#'
#' @section test:
#'
#' | **test** | **test** | **test** |
#' | -------- | -------- |  ------------   |
#' | `test` | test | `test` test 2 |
#' @name test
#' @export
NULL

results in

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/test.R
\name{test}
\alias{test}
\title{test fun}
\description{
test.
}
\section{test}{
\tabular{lll}{
   \strong{test} \tab \strong{test} \tab \strong{test} \cr
   \code{test} \tab test \tab \code{test} \tab test 2 \cr
}
}

Note the additional \tab after \code{test}. This breaks the table formatting as this line now has 4 cols instead of 3.

(I tried to come up with a full reprex but didn't manage to combine roxygen2:::roc_proc_text(roxygen2:::rd_roclet() in the right way.)

[hadley]

Easiest way to make a reprex here is to use internal markdown() function:

md <- "
| x     |
| ----- |
| `x` y |
"
cat(roxygen2:::markdown(md))
#> \tabular{l}{
#>    x \cr
#>    \code{x} \tab  y \cr
#> }

md <- "
| x     |
| ----- |
| x y   |
"
cat(roxygen2:::markdown(md))
#> \tabular{l}{
#>    x \cr
#>    x y \cr
#> }

^{Created on 2019-11-21 by the reprex package (v0.3.0)}

[hadley]

Quick check that the problem lies in roxygen2:

md <- "
| x     |
| ----- |
| `x` y |
"
cat(commonmark::markdown_xml(md, extensions = "table"))
#> <?xml version="1.0" encoding="UTF-8"?>
#> <!DOCTYPE document SYSTEM "CommonMark.dtd">
#> <document xmlns="http://commonmark.org/xml/1.0">
#>   <table>
#>     <table_header>
#>       <table_cell>
#>         <text xml:space="preserve">x</text>
#>       </table_cell>
#>     </table_header>
#>     <table_row>
#>       <table_cell>
#>         <code xml:space="preserve">x</code>
#>         <text xml:space="preserve"> y</text>
#>       </table_cell>
#>     </table_row>
#>   </table>
#> </document>

^{Created on 2019-11-21 by the reprex package (v0.3.0)}

[pat-s]

Thanks for the quick fix and the reprex example.