I'm not so sure. at the very least you will need to change the comment
because it specifically states this isn't what should be done.

when I get back from the water polo game I'll give a better argument (or
retract my statement).

On Wed, Oct 17, 2018, 17:43 David T. Lewis <lewis at mail.msen.com> wrote:

> If I am reading this right, it says that we can test for
> "self start = comparand start" if and only if both of the two Timespans
> have no timezone information, otherwise we need to use #hasEqualTicks:
> to compare the two start values for the two durations.
>
> I'm not sure if there is an optimization available for the case of the
> two Timespans both having timezone information, but aside from that
> the change looks right to me.
>
> Dave
>
> On Wed, Oct 17, 2018 at 09:04:29PM +0000, commits at source.squeak.org wrote:
> > Chris Muller uploaded a new version of Chronology-Core to project The
> Inbox:
> > http://source.squeak.org/inbox/Chronology-Core-cmm.13.mcz
> >
> > ==================== Summary ====================
> >
> > Name: Chronology-Core-cmm.13
> > Author: cmm
> > Time: 17 October 2018, 4:04:08.832696 pm
> > UUID: 60718249-84a8-4dc2-aa94-4ba5c8e5addc
> > Ancestors: Chronology-Core-tcj.12
> >
> > Fix DateAndTime today asDate = Date today even when not in GMT.
> >
> > =============== Diff against Chronology-Core-tcj.12 ===============
> >
> > Item was changed:
> >   ----- Method: Timespan>>= (in category 'ansi protocol') -----
> >   = comparand
> >       ^ self class = comparand class
> > +             and: [((self noTimezone and: [comparand noTimezone])
> > -             and: [((self noTimezone or: [ comparand noTimezone ])
> >                       ifTrue: [ self start hasEqualTicks: comparand
> start ]
> >                       ifFalse: [ self start = comparand start ])
> >               and: [ self duration = comparand duration ] ]
> >   .!
> >
> >
>
>
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