Re: `.newsrc.eld' saves chinese group name in wrong coding

[Richard Stallman]

    This said, I agree that Emacs should help more.  E.g. by signalling an error
    when trying to insert multibyte text into a unibyte buffer.

This operation converts the string to unibyte.  It works correctly,
provided the characters in that string can be expressed in the unibyte
buffer.

If people generally agree it would be better to signal an error,
we could do that.  However, that would cause trouble trying to use
M-y to move past multibyte entries in the kill ring to reach the
unibyte entry you really want.