`row_spec` does not remove `hline` when specifying `hline_after = F`

[twillis209]

Using kableExtra v1.4.0.2, I can't use row_spec to remove \hline elements from a table.

library(kableExtra)
data.frame(a = c('a', 'b', 'c'), b = 1:3) |>
kbl(format = 'latex') |> 
row_spec(1:3, hline_after = F) |>
  cat()
#> 
#> \begin{tabular}[t]{l|r}
#> \hline
#> a & b\\
#> \hline
#> a & 1\\
#> \hline
#> b & 2\\
#> \hline
#> c & 3\\
#> \hline
#> \end{tabular}

^{Created on 2024-02-10 with reprex v2.1.0}

I suspect this may just be incorrect use on my part.

[dmurdoch]

Yes, hline_after = FALSE is the default. If you set it to TRUE it will add \hline, but setting it to FALSE just leaves the lines alone. One way to remove the unwanted \hline entries is to use the booktabs style, e.g.

 library(kableExtra)
data.frame(a = c('a', 'b', 'c'), b = 1:3) |>
kbl(format = 'latex', booktabs=TRUE) |> 
  cat()

If that removes too many lines, you can add them back with row_spec(..., hline_after=TRUE).