LaTeX: when there are multiple footnotes, those without a superscript are added an "NA" superscript

[etiennebacher]

Prework

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• If there is already a relevant issue, whether open or closed, comment on the existing thread instead of posting a new issue.

Description

Context:

• multiple footnotes
• some of the footnotes have locations = NULL, so that they appear as general footnotes and are not related to a specific table element

In this case, the HTML output works fine:

But for LaTeX output, there is now an "NA" superscript before the general footnote.

Reproducible example

• Post a minimal reproducible example so the maintainer can troubleshoot the problems you identify. A reproducible example is:
  • Runnable: post enough R code and data so any onlooker can create the error on their own computer.
  • Minimal: reduce runtime wherever possible and remove complicated details that are irrelevant to the issue at hand.
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library(gt)
packageVersion("gt")
#> [1] '0.9.0.9000'

out <- mtcars[1, ] |> 
  gt() |> 
  tab_footnote("some general text") |> 
  tab_footnote("some specific text", locations = cells_column_labels(1))

# when we convert to Latex, it adds a "\\textsuperscript{\\textit{NA}}" before
# the text of the footnote
as_latex(out)[1]
#> [1] "\\setlength{\\LTpost}{0mm}\n\\begin{longtable}{rrrrrrrrrrr}\n\\toprule\nmpg\\textsuperscript{\\textit{1}} & cyl & disp & hp & drat & wt & qsec & vs & am & gear & carb \\\\ \n\\midrule\\addlinespace[2.5pt]\n21 & 6 & 160 & 110 & 3.9 & 2.62 & 16.46 & 0 & 1 & 4 & 4 \\\\ \n\\bottomrule\n\\end{longtable}\n\\begin{minipage}{\\linewidth}\n\\textsuperscript{\\textit{NA}}some general text\\\\\n\\textsuperscript{\\textit{1}}some specific text\\\\\n\\end{minipage}\n"

Reprex for PDF output:

---
output: pdf_document
---

```{r}
library(gt)

mtcars[1, ] |> 
  gt() |> 
  tab_footnote("some general text") |> 
  tab_footnote("some specific text", locations = cells_column_labels(1)) |> 
  as_latex()
```

Expected result

There shouldn't be this "NA" superscript.

Session info

Session info

sessioninfo::session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────
#>  setting  value
#>  version  R version 4.3.1 (2023-06-16 ucrt)
#>  os       Windows 10 x64 (build 19044)
#>  system   x86_64, mingw32
#>  ui       RTerm
#>  language (EN)
#>  collate  English_Europe.utf8
#>  ctype    English_Europe.utf8
#>  tz       Europe/Paris
#>  date     2023-08-23
#>  pandoc   2.19.2 @ C:/Program Files/RStudio/resources/app/bin/quarto/bin/tools/ (via rmarkdown)
#> 
#> ─ Packages ───────────────────────────────────────────────────────────────────
#>  package     * version    date (UTC) lib source
#>  cli           3.6.1      2023-03-23 [1] CRAN (R 4.3.0)
#>  digest        0.6.33     2023-07-07 [1] CRAN (R 4.3.1)
#>  dplyr         1.1.2      2023-04-20 [1] CRAN (R 4.3.0)
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#>  generics      0.1.3      2022-07-05 [1] CRAN (R 4.3.0)
#>  glue          1.6.2      2022-02-24 [1] CRAN (R 4.3.0)
#>  gt          * 0.9.0.9000 2023-08-23 [1] Github (rstudio/gt@87fd8d2)
#>  htmltools     0.5.5      2023-03-23 [1] CRAN (R 4.3.0)
#>  knitr         1.43       2023-05-25 [1] CRAN (R 4.3.0)
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#>  pillar        1.9.0      2023-03-22 [1] CRAN (R 4.3.0)
#>  pkgconfig     2.0.3      2019-09-22 [1] CRAN (R 4.3.0)
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#>  tidyselect    1.2.0      2022-10-10 [1] CRAN (R 4.3.0)
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#> 
#>  [1] C:/Users/etienne/AppData/Local/Programs/R/R-4.3.1/library
#> 
#> ──────────────────────────────────────────────────────────────────────────────