On 03.03.2010, at 22:24, Chris Muller wrote:
> 
> I've just posted Morphic-cmm.372, which introduces
> AlternatePluggableListMorphOfMany.  (Be sure to also get
> Tools-cmm.200).  Those concerned with Squeak being familiar to
> new-users may appreciate this; it is basically the same as the
> standard PluggableListMorphOfMany, but allowing range-selections via
> Shift+clicking.  Also, swipe-selecting does not miss interim
> selections (e.g., in the middle of the swipe).
> 
> Now, I have not changed any existing users of PluggableListMorphOfMany
> to use AlternatePluggableListMorphOfMany, but there is a demonstration
> of it by enabling on the preference, "traceMessages" in the
> Preferences.  This will utilize a MessageTrace instead of a MessageSet
> when browsing senders/implementors.
> 
> If we like it, we can convert some or all of the legacy
> PluggableListMorphOfMany's to the new one and then rename it.  Or if
> there is a need for both then both or, if we don't like it, of course,
> it can easily be deleted..

What's the downside? It sounds like it has only obvious improvements, so why not just patch PluggableListMorphOfMany rather than introducing an alternate class?

- Bert -