[LukeShu]

I vaguely recall in ~2010 coming across a Plan 9 manpage(?) that seemed to imply that Emacs could work that way in a pipe (in reference to complex/bloated tools on non-Plan 9 systems), but that wasn't true of any version of Emacs I'd ever used.

[e40]

Yep, set EDITOR to emacsclient and vipe will use emacs.

[LukeShu]

I mean that it seemed to suggest that you could pipe directly to Emacs, without using vipe.