bug#66700: 30.0.50; Some history is missing with multiple eshell buffers

[Jim Porter]

On 11/14/2023 4:43 AM, Sean Whitton wrote:
> On Tue 14 Nov 2023 at 02:32pm +02, Eli Zaretskii wrote:
> > IMO, this is too soon to change the default behavior in incompatible
> > ways.  We need to wait for a while, perhaps at least one major
> > release, before we do that.
>
> This is fair enough.  It would be really useful to have the default
> behaviour now for those of used to it from other shells, though -- Liu,
> perhaps you would be interested in adding a defcustom?

Yeah, I think a defcustom would be good here. That would also make it 
easier for us to test out the new code and find any bugs.