Re: Inconsistent merge on subdirectory behavior?

Hi Johan and thanks for the reply.

I made a very simple reproduction script and attached it to this mail, the behavior seems to be easy to reproduce. Haven't made a reproducton script before so I'm not sure how you want the issue to be explained, but I first did the behavior that I think is incorrect and did a status+echo and then the same from a subdirectory with a second status+echo.

If you instead wanted me to make a bug report on the tracker, let me know.

/Chris

--------------------------------------------
On Fri, 4/13/18, Johan Corveleyn <jcorvel_at_gmail.com> wrote:

 Subject: Re: Inconsistent merge on subdirectory behavior?
 To: "Chris" <devnullaccount_at_yahoo.se>
 Cc: "Subversion" <users_at_subversion.apache.org>
 Date: Friday, April 13, 2018, 2:49 PM
 
 On Wed, Apr 11, 2018 at 4:56 PM,
 Chris <devnullaccount_at_yahoo.se>
 wrote:
> I wanted to reverse-merge some accidental
 changes on a subdirectory on my branch and svn really
 confuses me in this. Is the below behavior from subversion
 intended or have I stubled on a bug?
>
> I wanted to reverse-merge revision 1000 on
 all the files in the directory "sub/dir", below
 illustrated with only one file.
>
> wcroot> svn diff --summarize -c 1000
 sub/dir
> M sub/dir/foobar.txt
> wcroot> svn merge -c -1000 sub/dir
> --- Recording mergeinfo for reverse merge
 of r1000 into '.':
>  U  .
> So the file sub/dir/foobar.txt is not
 reverse-merged (and the merge info is elided even though the
 output does not say so)
>
> I tried a few different versions of this
 with e.g. -r 1000:999 with identical results.
>
> Then I did the
 following, which I thought would be more of the same:
>
> wcroot> cd
 foo/bar
> wcroot/foo/bar> svn merge -c
 -1000 .
> --- Reverse-merging r1000 into
 '.':
> U   
 sub/dir/foobar.txt
> --- Recording
 mergeinfo for reverse merge of r1000 into '.':
>  G  .
> --- Eliding
 mergeinfo from '.':
>  U  .
>
> So now it does what I
 wanted to.
>
> Is it
 intended that merge should do different things if I use
 "." or "sub/dir" as my WCTARGET? I find
 it confusing and it was mostly luck that I stumbled on the
 right solution. "svn help merge" does not seem to
 indicate that these two use cases should be any different,
 but I may misread it.
> Btw, this was
 done with "svn, version 1.9.5 (r1770682)"
>
> TIA,
>  Chris
 
 Hi Chris,
 
 That
 does seem strange. However it's quite hard to diagnose
 this from
 your description alone, because
 there are a lot of things that can
 play a
 role in the merge algorithm.
 
 Would you be able to come up with a
 reproduction script, or even just
 a
 transcript of you reproducing the issue, starting from a
 clean
 repository ('svnadmin create';
 ...)?
 
 For a reproduction
 script you could use the repro-template.sh or
 repro-template.bat linked from here:
 https://subversion.apache.org/docs/community-guide/issues.html#reporting-bugs
 
 Thanks,
 --
 Johan