>> `bs-show' displays buffer information on incorrect column position.
>> It is because `bs-show' calculates column using `length' for multibyte
>> strings.
>
>> Just changing `length' to `string-width' in `bs-show-in-buffer' and
>> `bs--insert-one-entry' will solve the problem.
>
>Indeed (tho this is not a "multibyte" problem, but a problem with
>double-width chars).
Oh, I'll remember the term.

>Can you provide a patch?
OK

Shigeru