bug#6455: 23.2; Backspace in view mode

[Glenn Morris]

"Francis Wright" wrote:

> Run emacs -Q.
> Open a file using view-file (or v in dired mode).
> Move to a point well away from the beginning of the buffer.
> Press the backspace key.
> The error message generated is "Beginning of buffer", which is not true.
> I think the error message should be the same as generated by pressing
> (say) the delete key, namely "Buffer is read-only: #<buffer prizes.sh>".

This is a confusing report. The backspace key in View-mode runs
View-scroll-page-backward, which scrolls the buffer backwards until it
bumps into the start of the buffer. It seems to me that it is doing
the right thing. Try it on a buffer where the whole buffer does not
fit into the window at once, after first moving to the end of the
buffer.

Why should it instead say that the buffer is read-only, when it is not
trying to modify the buffer in any way?