bug#61014: 29.0.60; flymake-mode stderr warning is confusing when edit the init.el or eary-init.el

[Stefan Monnier]

> How about disabling this warning in non-interactive sessions?  That
> should be easy, and I don't see why we would want to emit such a
> warning in non-interactive sessions anyway.

Before making any change, I'd wait to see some explanation about why
this message in a hidden " *stderr of elisp-flymake-byte-compile*" buffer
is a problem.

I think the choice of `load-path` in the subprocess is a concern (with
no reliably right answer, sadly), and maybe it would make sense to
avoid adding the CWD when we're in ~/.emacs.d (presumably using the
same code used to decide whether to emit the warning under
discussion :-), but there's no hurry for that.


        Stefan