maybe not use unicode characters in yes_no ?

[cderv]

yes_no() uses readline() and it seems to not handle well Unicode characters on Windows at least. (not like cat())

I got this in R console

― The new site is ready
○ To start a local preview: use blogdown::serve_site(), or the RStudio add-in "Serve Site"
○ To stop a local preview: use blogdown::stop_server(), or restart your R session
<U+25BA> Want to serve and preview the site now? (y/n) 

Does it print ok for you ? Is this a R console config issue on Windows ?

[yihui]

Okay, I felt we would run into this sooner or later on Windows (macOS and Linux should be fine). The unicode characters seem to work with cat(). I'll see what I can do. Thanks!

[yihui]

Now it will fall back on > if ► is not supported. Thanks!

[cderv]

Thanks !

I observed that : cat() is fine, print also, just not readline. Not sure which is the difference.

[usethis-create-proj*] > cat("\u25ba")
►
[usethis-create-proj*] > print("\u25ba")
[1] "►"
[usethis-create-proj*] > readline("\u25ba")
<U+25BA>
[1] ""

[yihui]

Here is the hope: https://developer.r-project.org/Blog/public/2020/07/30/windows/utf-8-build-of-r-and-cran-packages/

This problem has existed for long, e.g. r-lib/evaluate#59 and many other issues that referenced to it.

[cderv]

Thanks for sharing - I understand now.

So many things in the history of your work ! It is really interesting for me to learn all this. Thanks for taking the time to share it with me, ... with my questions and ideas that you already encountered years ago 😅