Re: [Gnu-arch-users] Star-merge Fatally Wounded

[Jan Hudec]

On Sat, Sep 11, 2004 at 13:30:57 +0200, David Allouche wrote:
> On Fri, 2004-09-10 at 20:00 -0400, Adrian Irving-Beer wrote:
> >         * Star-merge B into A works (but that's a false positive due
> >           to too little input data; it fuzzies and does it wrong).
> > 
> >         * Star-merge A into B fails due to conflict.
> > 
> >         * Star-merge either using --three-way works perfectly.
> > 
> > Interestingly, even though --three-way reports adding two patch logs
> > and modifying the file (*not* a conflict), it only adds one patch log
> > and doesn't make any changes to the file.  Essentially, the merge
> > becomes a no-op (as one would expect).
> > 
> > Is the three-way behaviour helpful at all in improving the normal
> > behaviour?  Is it only working due to minimal input data?
> 
> That's intriguing. I never really quite understood how --three-way
> affects the merge logic.

It does not. But diff3, having more information than just patch, does
a better job merging conflicting changes. Namely, if both branches
contain the same change, it causes a conflict with diff + patch, but not
with diff3.

-------------------------------------------------------------------------------
                                                 Jan 'Bulb' Hudec 
<address@hidden>

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