Subject: bug#10773: set-variable can't change values of user options

From: Glenn Morris <[email-masked]>
Date: Sun, 12 Feb 2012 15:16:07 -0500

Stefan Monnier wrote:

>> But I think that has been previously rejected.
>
> That was a long time ago.  We should do it for 24.2.

That's a surprise. What's changed?
This feature was taken out 2005-05-17.
Why does define-derived-mode deliberately go out of its way to NOT do
this? Will that be changed too?