On Oct 1, 2014, at 9:55 PM, Satish Balay <[email protected]> wrote:

> On Wed, 1 Oct 2014, Barry Smith wrote:
> 
>> 
>> On Oct 1, 2014, at 9:34 PM, Satish Balay <[email protected]> wrote:
>> 
>>> On Wed, 1 Oct 2014, Barry Smith wrote:
>>> 
>>>> 
>>>> For large changes that I especially expect to break portability issues I 
>>>> make a set of changes, merge into next to check on all machines and then 
>>>> fix the issues that come up in tests the next day. This can happen a few 
>>>> times. 
>>>> 
>>>> Now if I only did testing on my own machine during these several days, 
>>>> since my branch never touches another branch I can rebase it, I can reset 
>>>> some changes if I realize they are really stupid, then I could put a very 
>>>> nice commit into master with a great history.
>>>> 
>>>>  How can I do this after I have put all the trash into next along the way? 
>>>> Is there a modification of the next model we can use that would allow me 
>>>> to have clearer histories? How do other groups handle this, we know Linus 
>>>> doesn’t allow ugly histories so how can the model work for them?
>>>> 
>>> 
>>> I think its valid to 'git revert trash-branch' from next - and then
>>> 'git merge clean/rebased-branch' [per current workflow]
>>> 
>>> http://git-scm.com/blog/2010/03/02/undoing-merges.html
>>> git revert -m 1 [sha_of_C8]
>>> 
>>> I'm not sure what happens if there are multiple merges from the
>>> 'trash-branch' to next.  Perhaps we would have to revert each of the
>>> merge points [in the reverse order] - and then merge in the rebased
>>> branch.
>>> 
>>> In this case - I think its ok to have the trashy history in the
>>> feature-branch - until its complete - and then do the 'rebase/cleanup’
>> 
>>  Yes but then after it is put rebased/cleaned up and put into master won’t 
>> that cause grief because what in next is very different and merging master 
>> into next will be be problematic? Or is it not a problem?
> 
> No - because we reverted the messy stuff from next [before merging the
> cleaned stuff to next]. i.e

  But going over and doing all the reverts in next is busy work that I really 
don’t want to do (and as you say in your next email I may mess up). Better yet 
to toss next and get it clean from master

> 
> master contains: old-master + clean-feature
> 
> next contains  : old-next + messy-feature - messy-feature + clean-feature
> 
> [and we don't care about the messy history in next as its discarded at next 
> release]
> 
> Satish

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