bug#27717: other-window when there is no other window

[martin rudalics]

> C-x o runs the command other-window.
>
> Alas, if there is no other window, it does nothing.
>
> It doesn't even print a message "no other window". BUG!
>
> Better yet in this case would be just switch to an other buffer (the
> same buffer that switch-to-buffer asks the user about, but without
> asking the user.)
>
> And only if there is also no other buffer, then print the message.

The documentation of ‘other-window’ contains the sentence "COUNT zero
means do not skip any window, so select the selected window."  which
clearly indicates that "doing nothing" is a valid action in this case.
C-x 5 o behaves in a similar way.

Admittedly, saying that ‘other-window’ does "Select another window in
cyclic ordering of windows." is misleading.

martin