[climacs-devel] overwrite mode

[Aleksandar Bakic]

> I don't know.  I guess a compound undo record could be used.  The
> reason I am suggesting a combination of (setf buffer-object) and
> forward-mark, is that it is potentially more efficient.

I also had efficiency in mind. For a start, I committed a delete-insert
combination (only within com-self-insert; I noticed in Emacs that Yank ignores
Overwrite mode, for example). 

> On the other hand, the real question is about semantics.

Right. If an overwrite should not affect marks, then neither a delete-insert
combination nor using a compound undo record (with an insert and a delete) with
(setf buffer-object) will work. Notice that Overwrite mode works like Insert
mode at the end of the line. Unless someone knows the definition, perhaps we
can define it whatever works for us.

Alex


		
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