Re: problems with Emacs 28

[Michael Heerdegen]

Emanuel Berg via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org> writes:

> destructive - changes the value in the actual argument variables.
> It would seem this requires "call by name" or "call by reference", not
> "call by value", right? (Unless the value is a memory location,
> perhaps...)

"Might change a passed value".  This is possible in Elisp when the value
is a sequence for example (unless the value is nil - remember your
not-in-place problem?).  `setcar' receives a cons value and modifies it.

Eieio objects and even closures are other examples.


Michael.