Hi @wush978,

That's amazing news! I would love to hear more about you experience using swirl in the classroom. What locale are your students using? Could one of them paste the result of sessionInfo() here? Also what's one example of a swirl question that shows the warning? I'll try to reproduce it.

Sean

Hi @seankross ,

I am trying to create a minimal example of this issue, but I failed. After collecting more information and creating a reproducible example, I'll update it to here.

Thanks,
Wush

hi @seankross @wush978
I had same experiences weeks ago. Finally I find clear all history entries could fix it, but I don't understand why it would be this.

Best.

Hi @seankross and @macnversion ,

I understand the reason.

I found some source and other IO functions which read the source code from file. On my courses, these scripts are stored with encoding UTF-8, but the default chinese encoding for Chinese Traditional windows users are BIG5. Similar issues might be occurred for other non-English courses.

The solution is to add the argument encoding = "UTF-8", in my case, to these functions or connections. More generally, providing the default encoding or a hook before parsing might be a more robust solution.

Best,
Wush

Thanks. @wush978 !!