colorlinks options not working after recent update

[leowill01]

PROBLEM

The colorlinks=true option isn't working for me as first discovered using colorlinks: yes in the YAML frontmatter when knitting with rmarkdown::render() in RStudio.

After some recent software updates including pandoc, none of the following commands I tried produce a PDF with red-colored TOC links or blue-colored hyperlinks:

pandoc -f markdown -o out.pdf -V colorlinks=true doc.Rmd
pandoc -f markdown -o out.pdf -V colorlinks=true -V urlcolor=blue doc.Rmd
pandoc -f markdown -o out.pdf -V colorlinks:true -V urlcolor:blue doc.Rmd
pandoc -f markdown -o out.pdf --variable=colorlinks:true --variable=urlcolor:blue Untitled.Rmd
pandoc -f markdown -o out.pdf -V colorlinks -V linkcolor=blue -V urlcolor=blue Untitled.Rmd

And this reprex Rmd doesn't work with knitting to PDF through RStudio:

---
title: 'Title'

output:
  bookdown::pdf_document2:
    latex_engine: xelatex

colorlinks: yes # doesnt work as it recently used to
urlcolor: blue # doesnt do anything
---

`[^ TOC LINKS NOT COLORED RED AS EXPECTED]`

# Header

Some text.
This is a [hyperlink to Google](www.google.com). `[<- HYPERLINK NOT COLORED BLUE AS EXPECTED]`

I've tried other things such as using urlcolor: blue, but it's worked for years previously without having to set this and it doesn't change anything when I've tried to use it now.
{Colorlinks option is not applied to some hyperlinks · Issue #6453 · jgm/pandoc · GitHub; Colorlinks option failing when producing a beamer presentation · Issue #3877 · jgm/pandoc · GitHub}

SESSION INFO

pandoc --version

pandoc 2.19
Compiled with pandoc-types 1.22.2, texmath 0.12.5.2, skylighting 0.13,
citeproc 0.8.0.1, ipynb 0.2, hslua 2.2.1
Scripting engine: Lua 5.4
User data directory: /Users/leo/.local/share/pandoc
Copyright (C) 2006-2022 John MacFarlane. Web:  https://pandoc.org
This is free software; see the source for copying conditions. There is no
warranty, not even for merchantability or fitness for a particular purpose.

macOS Monterey v12.5
RStudio 2022.07.1 Build 554

[tarleb]

Can you try calling pandoc with -V boxlinks? I believe the fix for #8198 is the cause for this issue.

[tarleb]

Thanks for the report – should be fixed now. Adding boxlinks: true to your YAML header should work as a workaround.

[jgm]

Sorry about the regression -- we'll try to push out a point release in the near future.

[leowill01]

Thanks for the report – should be fixed now. Adding boxlinks: true to your YAML header should work as a workaround.

Can confirm having both colorlinks: true and boxlinks: true (in YAML header) does in fact work for me and resolves the problem. Link text (toc=red, hyperlinks=blue) are colored as they had been previously, and there are no actual boxes that show around the link text as it would do if only boxlinks: true was enabled. Thanks!