`kableExtra` issues

Repost from https://github.com/vincentarelbundock/modelsummary/issues/856

Thanks for opening this issue! I'm afraid I don't have good news.

For background, my understanding is that kableExtra is not actively developed anymore, and that it includes many known bugs that have gone unfixed for years. Moreover, the fundamental design of the package makes it very challenging for downstream packages like modelsummary to use. This is especially true for anything involving escape.

So while I think it is an incredible package that has made major contributions to the R ecosystem, I no longer recommend it to users. There are good reasons why I started to develop the tinytable package, and why I made it the default output format in modelsummary.

I recommend that all modelsummary users switch to tinytable (ideally), or to one of the other modern options like gt.

Given all that, I do not plan to spend time fixing kableExtra problems in the future. If someone supplies a fix, I will be happy to review and merge pull requests on GitHub. But I do not plan to do this work myself, as I feel there are better uses of my limited open source development hours.

Sorry for the disappointing answer!