2016-01-11 16:10:28 +0100, Steffen Nurpmeso:
[...]
> And your diff includes
>
> +.Pp
> +For compatibility with
> +.St -p1003.1-2008
> +.Xr fold 1 ,
> +if a double-width character is followed by two backspace characters
> +instead of the usual one, both are regarded as belonging to
2016-01-11 15:50:55 +, Stephane Chazelas:
[...]
> $ printf '|\uFF21\b\b|\n'
> ||
> $ printf '|\uFF21\b|\n'
> | |
>
> in both xterm and gnome-terminal. As in, you need two backspace
> characters to delete that character. With only one, the cursor
> moves back one
