bug#42916: 26.3; `view-lossage': include timestamp

[Drew Adams]

> > Especially in such a context, it could be useful to provide a timestamp
> > with each event.  This could be via a `help-echo' property, for example.
> > Or it could be made available as a separate column, or in some other
> > way.
> 
> This would mean querying (and storing) the time stamp of all keystrokes,
> which seems excessive for such a marginal feature.

Yes.  It was just a thought.

Perhaps an optional behavior (via mode or otherwise)
would be in order - something you could turn on when
interested in more complete logging.  That could help
with some kinds of debugging or learning, for instance.

Certainly, if this were a performance drag it shouldn't
be the default behavior.