bug#50743: Emacsclient not tested vs. Local Variables prompt

[積丹尼 Dan Jacobson]

Big problem.
If a file triggers
------
   The local variables list in Makefile
   contains values that may not be safe (*).

   Do you want to apply it?  You can type
   y  -- to apply the local variables list.
   n  -- to ignore the local variables list.
   !  -- to apply the local variables list, and permanently mark these
         values (*) as safe (in the future, they will be set automatically.)
------
one simply types one of y,n,! . No problem...
unless one used emacsclient to open that file.

In that case one's y,n,! are being sent to the shell,
as can be seen from the hollow prompt there in emacs.

emacs-version "27.1"