Re: open-rectangle

[martin rudalics]

> Intention is to copy extracts from *w3m*-buffer with
> `copy-rectangle-to-register'
>
> However, calling `open-rectangle' I get an error,
> because *w3m*-buffer is read-only. Toggling this it
> works.

How do you manage to call `open-rectangle' here?
`copy-rectangle-to-register' calls `extract-rectangle' which doesn't
modify the buffer.

>
> Question: Is this star, which causes the error in the
>  interactive-form "*r\nP" of `open-rectangle' necessary?

Yes.  Because `open-rectangle' may modify the buffer.