Re: 4 minor suggestions for files.el

[Andre Spiegel]

On Tue, 2003-05-06 at 12:14, Richard Stallman wrote:

> For vc-merge, since that is an explicit command to apply a patch to
> the buffer, I think it would be right for the patch to be undoable.
> Is it undoable now?  Could it be made so?  Would that require a change
> somewhat like the one Stephan proposed?

You can always use the symmetric operation, of course.  You can take out
the changes from 1.2 to 1.4 using vc-merge, and then you can reapply
them by simply reversing the arguments again.

I don't think it's wise to make this available through the general undo
mechanism.  For example, vc-merge may also detect conflicts with your
own changes, and you need to resolve them before the merge operation is
actually finished.  How would you undo that?  This is getting very
complicated, and I think it's wiser just to provide the user with
symmetric operations.