Re: preparing for 2.34.1

Johannes Schindelin [off-list ref] writes:

The quickest workaround for this is probably to special-case the editor
`echo`:

"GIT_EDITOR=: git cmd" would also be a common trick people would use
to bypass editor and take whatever is given as an initial template.

However, I could imagine that other scenarios call for an editor that
_also_ does not run in the terminal, and where also no real terminal is
available for saving and restoring.

I was tempted to suggest an `isatty(2)`, but that probably comes with its
own problems, too.

I think isatty(2) is pretty much our synonym to "are we talking to
an end-user sitting in front of the terminal".  Mostly we use it as
a way to control the progress bars, and use of editor on terminal
would be in line with these existing uses.