I encountered a wierd bug on my newly-bought laptop that runs a Windows OS. The character cannot be decoded correctly in Spacemacs (Emacs 26.1). Here is a quick fix.

Problem

The problem is like this: the system fails in displaying some of the Chinese characters. If you check the Messages buffer, the error is: “Invalid coding system: cp65001” or “file mode specification error: coding-system-error cp65001”.

Solution

I found the solution on Reddit: Invalid coding system: cp65001.

Basically the solution is to disable the “BETA: Use Unicode UTF-8 for worldwide language support”.

Remember to reboot the computer.

After Fixing

Here is what it looks like after the bug is fixed.

Done!