[m-rev.] diff: exploit the new capability of switch detection

[Julien Fischer]

On Tue, 20 Sep 2005, Mark Brown wrote:

> On 19-Sep-2005, Julien Fischer <juliensf at cs.mu.OZ.AU> wrote:
> >
> > On Mon, 19 Sep 2005, Zoltan Somogyi wrote:
> >
> > > The change to switch detection has now been installed on all our machines.
> > >
> > > Zoltan.
> > >
> > > compiler/dupelim.m:
> > > 	Factor out some common code using the new capability of switch
> > > 	detection.
> > >
> > Assuming that Mark's laptop has been updated then that's fine ;-)
>
> My laptop has been updated, but that's not entirely the point.  This issue
> would affect any users who want to keep an installed copy of the latest
> compiler from CVS instead of having to download a source distribution each
> time.  I don't know if we have such users, but if we did then we would
> probably lose them quickly if we too often make changes that break forwards
> compatibility.
>
> The question is, how often are users required to install from CVS in order
> to still be able to compile the latest source?  That is, how long do we have
> to wait between adding a new feature to the language and putting something
> in the compiler that depends on it?  Do we ever tell the users what this
> interval is?
>
No, mainly because we don't know what it is ourselves.  Anyway, isn't
this the point of the unstable part of unstable rotd - things may break/be
broken.

Cheers
Julien.
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