On Fri, May 24, 2013 at 5:37 AM, Ramkumar Ramachandra
<artag...@gmail.com> wrote:
> Junio C Hamano wrote:
>> [...]
> I agree with the other comments, and have made suitable changes.
> Let's review your block now.
>>         This transformation is used to find filepairs that represent
>>         two kinds of changes, and is controlled by the -S, -G and
>>         --pickaxe-all options.
> Why do you call this a "transformation"?  Is git log --author="foo" a
> transformation on the git-log output?  Then how is git log -Sfoo a
> transformation?
> Two kinds of changes controlled by three different options?  Isn't the
> original much clearer?

They are all three filters.  They transform the output by limiting it
to commits which meet specific conditions.  Transformation is used in
the network-graphs sense of the word.  It fits the beginning of the
document where it says this:

  The diffcore mechanism is fed a list of such comparison results
  (each of which is called "filepair", although at this point each
  of them talks about a single file), and transforms such a list
  into another list.  There are currently 5 such transformations:

  - diffcore-break
  - diffcore-rename
  - diffcore-merge-broken
  - diffcore-pickaxe
  - diffcore-order
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