Last weekend, my friend told me that the RSS feed on my site is broken.

There’s the error message on feed page.

PCDATA invalid Char value 3

It’s weird. I didn’t use any ASCII code or something technical on my markdown post. And there is no similar issue or bug in Jekyll-feed gem. Everything looks fine !

I delete EVERY character one by one in the line and I got the ‘wrong’ finally. There is a invisible charactor in my post after a chractor a. And I need to tap delete twice to delete the a.

There is the detail about this issue. Vscode won’t render the CR, EOL and 0~31 ASCII code.

Hope this problem will be fixed soon.