bug#37514: PATCH: Add setting to allow switching to an already-visible buffer by default

[Jefferson Carpenter]

> On 9/27/2019 8:16 AM, martin rudalics wrote:
>
> >  > Switch-to-prev-buffer seems to do the same thing - executing it
> >  > twice does not return you to the buffer you started at.
> >
> > 'switch-to-prev-buffer' and 'switch-to-next-buffer' are the canonical
> > commands for navigating a specific window's buffer list (here these
> > are bound to <M-left> and <M-right> because I don't care for word-like
> > movement).

Adding a single additional key might sound reasonable, but here you're 
asking me to add two additional keys to my global bindings when a 
two-character code change would make it unneeded (+" t").  The patch I 
attached to the original email just adds a customization setting to make 
that a more general option.