as_latex is latex-escaping

[10b14224cc]

Prework

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Description

THe function as_latex is converting \ into \\textbackslash{}, { into \{ and does other latex-escaping that can't be avoided

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.
  • Readable: format your code according to the tidyverse style guide.

library(gt)
gtcars |>
  dplyr::select(mfr, model, msrp) |>
  dplyr::slice(1:5) |>
  gt() |>
  tab_header(
    title = "\\textbf{gtcars}",
    subtitle = md("`gtcars` is an R dataset")
  ) |>
  as_latex() |>
  as.character()

Actual result

"\\begin{table}[!t]\n\\caption*{\n{\\large \\textbackslash{}textbf\\{gtcars\\}} \\\\ \n{\\small \\texttt{gtcars} is an R dataset}\n} \n\\fontsize{12.0pt}{14.4pt}\\selectfont\n\\begin{tabular*}{\\linewidth}{@{\\extracolsep{\\fill}}llr}\n\\toprule\nmfr & model & msrp \\\\ \n\\midrule\\addlinespace[2.5pt]\nFord & GT & 447000 \\\\ \nFerrari & 458 Speciale & 291744 \\\\ \nFerrari & 458 Spider & 263553 \\\\ \nFerrari & 458 Italia & 233509 \\\\ \nFerrari & 488 GTB & 245400 \\\\ \n\\bottomrule\n\\end{tabular*}\n\\end{table}\n"

As you can see, \ was converted into \\textbackslash{}

Expected result

There should be a escape option, like there is for knitr::kable, that prevents escaping.

Yes, I know I can use md("**my title**"), but my aim is to output raw LaTeX code that do not have a corresponding Markdown code, in particular for newlines in cell outputs for example.

Session info

> sessionInfo()
R version 4.4.1 (2024-06-14)
Platform: x86_64-pc-linux-gnu
Running under: Arch Linux

Matrix products: default
BLAS:   /usr/lib/libblas.so.3.12.0 
LAPACK: /usr/lib/liblapack.so.3.12.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C               LC_TIME=en_DK.UTF-8       
 [4] LC_COLLATE=en_US.UTF-8     LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                  LC_ADDRESS=C              
[10] LC_TELEPHONE=C             LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

time zone: Europe/Rome
tzcode source: system (glibc)

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] gt_0.11.1            labelled_2.13.0      tmap_3.3-4           gtsummary_2.0.3.9003
 [5] magrittr_2.0.3       lubridate_1.9.3      forcats_1.0.0        stringr_1.5.1       
 [9] dplyr_1.1.4          purrr_1.0.2          readr_2.1.5          tidyr_1.3.1         
[13] tibble_3.2.1         ggplot2_3.5.1        tidyverse_2.0.0     

loaded via a namespace (and not attached):
  [1] DBI_1.2.3          httr2_1.0.5        tmaptools_3.1-1    s2_1.1.7           readxl_1.4.3      
  [6] rlang_1.1.4        e1071_1.7-16       compiler_4.4.1     roxygen2_7.3.2     png_0.1-8         
 [11] vctrs_0.6.5        wk_0.9.4           pkgconfig_2.0.3    fastmap_1.2.0      backports_1.5.0   
 [16] lwgeom_0.2-14      giscoR_0.6.0       leafem_0.2.3       ISOweek_0.6-2      geojsonsf_2.0.3   
 [21] utf8_1.2.4         rmarkdown_2.28     markdown_1.13      tzdb_0.4.0         haven_2.5.4       
 [26] xfun_0.48          jsonlite_1.8.9     RefManageR_1.4.0   minty_0.0.1        terra_1.7-83      
 [31] broom_1.0.7        parallel_4.4.1     R6_2.5.1           stringi_1.8.4      RColorBrewer_1.1-3
 [36] pkgload_1.4.0      cellranger_1.1.0   stars_0.6-6        assertthat_0.2.1   Rcpp_1.0.13       
 [41] knitr_1.48         base64enc_0.1-3    timechange_0.3.0   tidyselect_1.2.1   rstudioapi_0.17.1 
 [46] dichromat_2.0-0.1  abind_1.4-8        codetools_0.2-20   curl_5.2.3         lattice_0.22-6    
 [51] leafsync_0.1.0     plyr_1.8.9         withr_3.0.1        evaluate_1.0.1     sf_1.0-18         
 [56] units_0.8-5        proxy_0.4-27       zip_2.3.1          xml2_1.3.6         pillar_1.9.0      
 [61] eurostat_4.0.0     KernSmooth_2.23-24 generics_0.1.3     rprojroot_2.0.4    sp_2.1-4          
 [66] hms_1.1.3          munsell_0.5.1      regions_0.1.8      commonmark_1.9.2   scales_1.3.0      
 [71] readODS_2.3.0      class_7.3-22       glue_1.8.0         tools_4.4.1        data.table_1.16.2 
 [76] fs_1.6.4           XML_3.99-0.17      grid_4.4.1         bibtex_0.5.1       crosstalk_1.2.1   
 [81] cards_0.3.0        colorspace_2.1-1   raster_3.6-30      shrtcts_0.1.2      cardx_0.2.1       
 [86] cli_3.6.3          rappdirs_0.3.3     fansi_1.0.6        viridisLite_0.4.2  countrycode_1.6.0 
 [91] gtable_0.3.5       sass_0.4.9         digest_0.6.37      classInt_0.4-10    htmlwidgets_1.6.4 
 [96] htmltools_0.5.8.1  lifecycle_1.0.4    leaflet_2.2.2      here_1.0.1         httr_1.4.7

[10b14224cc]

You may want to use

title = md("**gtcars**"),

Thanks.

Have you read the

Yes, I know I can use md("my title"), but my aim is to output raw LaTeX code that do not have a corresponding Markdown code, in particular for ddsjoberg/gtsummary#2047 for example.

Part of my post?

[rich-iannone]

I think it makes sense to have a latex() helper function that works similarly to html(), where escaping doesn’t happen for the targeted output table.