Hi

Lukas did something like that

http://www.cincomsmalltalk.com/userblogs/avi/blogView?showComments=true&entry=3291004466

Maybe we should nag the code out of him ;)

Cheers
Philippe


2006/6/22, Markus Gaelli <gaelli at emergent.de>:
>
> On Jun 22, 2006, at 10:14 AM, Bert Freudenberg wrote:
>
> > Does anyone know a good order in which to display these versions?
> > We currently use a a breadth-first order in the ancestor graph,
> > which is also used when you click the "history" button in MC (a
> > version usually has only one ancestor, but if a merge happend, it
> > can have more than one, forming an acyclic directed graph).
> >
> > Here's an example in chronological order:
> >
> > 1. A1 (--)            - developer A starts a package
> > 2. A2 (A1)            - A produces more code
> > 3. A3 (A2)            - A fixes bugs
> > 4. B4 (A3)            - developer B branches
> > 5. A4 (A3)            - A continues on trunk
> > 6. B5 (B4)            - B develops on branch
> > 7. B6 (B5)            - B develops on branch
> > 8. A5 (A4, B6)        - A merges B's latest
> > 9. A6 (A5)            - A continues
> >
> > but in breadth-first order this becomes:
> >
> > 9. A6 (A5)            - A continues
> > 8. A5 (A4, B6)        - A merges B's latest
> > 5. A4 (A3)            - A continues on trunk
> > 7. B6 (B5)            - B develops on branch
> > 3. A3 (A2)            - A fixes bugs
> > 6. B5 (B4)            - B develops on branch
> > 2. A2 (A1)            - A produces more code
> > 4. B4 (A3)            - developer B branches
> > 1. A1 (--)            - developer A starts a package
> >
> > ... which is a bit counter-intuitive.
> >
> > I wonder if there is some order or indentation scheme to better
> > indicate the merge history. But it would have to be able to show
> > even more complex cases than this rather simple example.
>
> Hi Bert,
>
> I think all merge histories can be thought of as Posets.
> Posets can be displayed as Hasse-Diagrams, especially using GraphViz
> with the nice adapter of John Pierce.
> (Technically speaken Hasse Diagrams come without arrowheads, but hey...)
>
> You need an OS-Process enabled VM for using the graphviz package from
> John though, but below graph nodes and edges could then be displayed
> as morphs.
>
> Cheers,
>
> Markus
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