Brief article on benchmarks of Python repository with leading DVCSen

[Aaron Bentley]

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Matthieu Moy wrote:
> "Stephen J. Turnbull" <stephen at xemacs.org> writes:
> 
>>  > I'm repeating myself, but you are _not_ explicit about the change it
>>  > content with bzr. The changes in content are _detected_ after the fact
>>  > by bzr, with a diff algorithm. As any decent VCS would do.
>>
>> No, decent VCSes don't use diff algorithms,
> 
> THEY DO, FOR THE CONTENT OF FILES.

They typically use delta compression of some form.  Bzr uses delta
compression, but not in our user model.  Our user model is just
snapshots of directories-- the fact that they are delta-compressed is
repository-specific.

When merging, it is the merge operation that does something similar to
what diff does-- compare the lines in a file and determine which lines
in each file form matching sequences.

Aaron
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