(12-01-2020, 08:39 PM)josuah Wrote: Maybe you could give acme or UNIX-only derivatives a try, which blurs the border between buffers, shell, editing, running command input...

I personally use dvtm for this purpose. You can edit your scrollback buffer in $EDITOR, edit/save it and then paste it elsewhere.
Not as integrated as what you have in acme, but still a good candidate.