bug#5842: Move Control modifier only in Emacs

[Stefan Monnier]

>> I would much prefer a patch that's independent of the underlying GUI, so
>> we can use the same config vars under a tty, X11, Windows, ...
> That would be a lot better.  Is there a particular reason for why all
> these other keysum redefinition things (like `x-alt-keysum' and friends)
> target X particularly?  Historical reasons?

Probably historical reasons, yes.

The fact that we have many such variables for different GUI backends and
that none of them are really general indicates that it's just the result
of a patchwork of small changes to cover the submitter's
particular needs.
IOW, not much design in there.

Then again of course, maybe it's not as easy to do in a generic way.


        Stefan