TOC depth int bs4_book

Hi there,

I am wondering whether there is a way to increase the TOC depth in bs4_book? It looks as if my current toc setting do not have any effect. This is the content of _output.yml

bookdown::bs4_book:
  toc_depth: 6
  theme:
    primary: "#0d6efd"   
       base_font: 
      google: Sen
    heading_font:
      google:
        family: Bitter
        wght: 200
    code_font:
      google: 
        # arguments to sass::font_google() 
        family: DM Mono
        local: false

[cderv]

toc_depth is not part of the customization possible for bs4_bookformat. Related issue one year ago: #1254

This is by design for this format as it would be hard to give a nice formatting for more than 3 levels

bookdown/R/bs4_book.R

Lines 134 to 138 in 7ce6dc6

	build_toc <- function(output) {
	html <- xml2::read_html(output)
	main <- xml2::xml_find_first(html, ".//main")
	headings <- xml2::xml_find_all(main, ".//h1|.//h2|.//h3")

BTW toc is not a supported argument in bs4_book and setting toc_depth should have thrown an error. I'll fix that.

[cderv]

I am closing and tracking the idea for votes in #1378

Also, it will throw an error in next version of bookdown to set toc_depth so that it is clear that it is not allowed as it does not work.

thank you !

[github-actions]

This old thread has been automatically locked. If you think you have found something related to this, please open a new issue by following the issue guide (https://yihui.org/issue/), and link to this old issue if necessary.