bug#81517: 31.0.90; executable-find on remote buffer fails

> Cc: [email protected]
> Date: Thu, 30 Jul 2026 02:35:58 +0900
> From: Shun-ichi TAHARA <[email protected]>
> 
> Thanks for quickly response.
> 
>  > It has been fixed with bug#81280. The fix is in master, not in the
>  > emacs-31 branch. It covers also call-process and make-process.
> 
> I applied that fix to files.el and found it works fine, without any
> degrades also on macOS environment.
> 
> If this commit is merged to Emacs31, many Windows users are happy.

I imagine those users to be less happy if that commit, which is far
from trivial, causes regressions elsewhere.

Being very close to a release, this is not a simple obvious decision
to make, it involves risks that need to be assessed.  By contrast, the
offending commit was with us for more than a year, with no complaints
from the users of what is now the Emacs 31 pretest.