Comment 2 for bug 1691314

This was brought up previously on the bash mailing list in 2014:

https://lists.gnu.org/archive/html/help-bash/2014-03/msg00017.html

and then the readline mailing list:

https://lists.gnu.org/archive/html/bug-readline/2014-03/msg00044.html

and elsewhere:

https://lists.debian.org/debian-user/2014/04/msg00138.html

https://stackoverflow.com/questions/26257724/set-less-as-pager-in-psql

https://unix.stackexchange.com/questions/158269/can-we-use-something-better-than-more-for-tab-completion

But implementing an external pager is not an easy task, and so far it looks like nobody has done so.

>> I had a look at the source already, realizing that the internal paging
>> mechanism is quite entangled within readline. I even considered trying
>> a patch myself by passing the output to popen() to talk to the external
>> pager.
> I would have to see whether or not a popen-style approach would work with
> applications that want to manage the terminal in other ways, its effect on
> any signal handling applications want to do, and whether or not it would
> work in a callback-oriented application.

https://lists.gnu.org/archive/html/bug-readline/2014-03/msg00046.html