RE: [boost] Re: Steps before moving to Subversion

From: Schrom, Brian T (brian.schrom_at_[hidden])
Date: 2005-04-28 11:05:09

Do you have a test case that we can reproduce your missing line merge
and post back to Subversion? 

-----Original Message-----
From: boost-bounces_at_[hidden]
[mailto:boost-bounces_at_[hidden]] On Behalf Of Rene Rivera
Sent: Thursday, April 28, 2005 7:32 AM
To: boost_at_[hidden]
Subject: [boost] Re: Steps before moving to Subversion

David Abrahams wrote:
> Rene Rivera <grafik.list_at_[hidden]> writes:
>>Never mind.. just found the documentation of svnmerge. And hence have 
>>some answers.
> 
> What are they, please?  I don't know them.

http://www.dellroad.org/svnmerge/index

>>But here's the thing, it solves the book keeping aspect of the svn 
>>merge. But it doesn't solve the problem I had. It's not like I did not

>>follow the procedure of marking the comments with merge points and 
>>using "-r N:M" to only merge the un-merged changes. My problem was 
>>that the svn merge operation lost a line, literally. Which means that 
>>the conflict resolution algorithm has a problem. So unless there's a 
>>solution out there that doesn't use "svn merge" we might get bitten.
> 
> Oh.  Well it's not nice to have a bug, but you have to check your 
> merge results by hand anyway, don't you?

Of course you should check the merge results.. And I did in this case. 
But what I did was open the source file, which has the usual "<<<" and
">>>" conflict markers, and edit to make sure all the changes where in
there. But that conflict result was missing a line. When I did a diff
from what I had to the repository version on my branch, the other check
I go through when merging, the missing line obviously didn't show
either. What I failed to do was do a manual diff between the two other
original source files, the head revision and the branch revision, which
svn creates when it finds a conflict. I don't consider what I did as
unusual, as I was expecting the conflict resolution of a merge to
*never* loose information, under any circumstances.

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