On 12.04.2010, at 20:47, Eliot Miranda wrote:
> Hi Bert,
> 
> On Mon, Apr 12, 2010 at 2:18 AM, Bert Freudenberg <bert at freudenbergs.de> wrote:
> On 12.04.2010, at 00:27, Göran Krampe wrote:
> >
> > I have tried to maintain SM outside of the image earlier - but since the code sits in the image I understand that people start hacking on it. :) The effect is that there have been some changes to SMBase in trunk that only work in *later images*. For example, changing ifNotNilDo: to ifNotNil:. That does NOT work in Squeak 3.8 for example.
> >
> > So now I have backed out a few of these fixes so that the code still works in 3.8. For the moment - since I don't want to "disturb" the trunk way of things too much - just keep in mind that if you fix stuff in SMBase, the code is CURRENTLY meant to work in 3.8 and higher!
> 
> I ran into exactly the same problem this weekend. Wanted to work on packetizing the Etoys image, using Karl's script as a start. But I got stuck when filing in recent Monticello versions gave a *syntax* error because ifNotNilDo: was replaced by ifNotNil:.
> 
> Why not upgrade the compiler with Vassili's ifNotNil: enhancement?  I believe versions of his changes go back to 3.8.  He has a change set for 3.8 or thereabouts on his web site.  All systems with my closure compiler support ifNotNil: with an argument.  So there are lots of sources for the enhancement.  I could get this done for you tomorrow night if you're leery of doing it yourself.
> 
> best
> Eliot

That would be wonderful, thanks! :) 

- Bert -

> I agree with you that some packages should be kept compatible with older image versions. In particular those packages that are necessary to upgrade older code bases.
> 
> Does anyone have a snippet to find in a package all ifNotNil: sends that have a 1-argument block?
> 
> - Bert -
> 
> 
> 
> 



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