>From preamble:
Halt was being treated as a special case in Exception class >> #handles:
to avoid being handled by error handlers.  This changeset removes Halt
as a subclass of Error making it an indendent exception class (direct
subclass of Exception), and removes the special case test from
#handles:.

Roel Wuyts <wuyts at iam.unibe.ch> wrote:
> Aha. So who would be willing to change it? I don't feel comfortable with 
> doing it myself, unless there are enough unit tests around...
> 
> On Monday, Aug 4, 2003, at 19:00 Europe/Zurich, Anthony Hannan wrote:
> >>> The most important point however is that Exception DOES NOT
> >>> handle Halt (in spite of the fact that Halt is a subclass of
> >>> Exception.)
> >> Can somebody motivate this decision (or whether it is an unintentional
> >> bug)?
> >
> > I'm not the author but I believe the reason is so "self halt" will
> > always halt and not be accidentally handled by a earlier Error handler.
> > The better solution is probably to not make Halt a subclass of Error 
> > but just a direct subclass of Exception.
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