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https://issues.apache.org/jira/browse/SVN-4728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16402046#comment-16402046
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Philip Martin commented on SVN-4728:
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I first saw this on real repositories: when changing svn:ignore on a directory
that had svn:mergeinfo and when changing svn:eol-style on a file that had
svn:mergeinfo.
> dump/load mergeinfo-mod difference with --deltas
> ------------------------------------------------
>
> Key: SVN-4728
> URL: https://issues.apache.org/jira/browse/SVN-4728
> Project: Subversion
> Issue Type: Bug
> Components: libsvn_fs_fs
> Affects Versions: trunk
> Reporter: Philip Martin
> Priority: Minor
>
> When a revision has a property change that is not an svn:mergeinfo change to
> a node that already has svn:mergeinfo then a dump/load of that revision
> produces different representations in the new repository depending on whether
> --deltas is used when dumping.
> The original repository:
> svnadmin create repo
> svnmucc -mm -U [file://|file:///]`pwd`/repo mkdir A
> svnmucc -mm -U [file://|file:///]`pwd`/repo propset svn:mergeinfo /B:1 A
> svnmucc -mm -U [file://|file:///]`pwd`/repo propset p2 v2 A
> Dump and load with/without --deltas
> svnadmin dump repo | svnadmin load repo2
> svnadmin dump --deltas repo | svnadmin load repo3
> Note the difference in the r3 revision files:
> $ grep -a modify-dir repo[23]/db/revs/0/3
> repo2/db/revs/0/3:0-1.0.t2-2 modify-dir false true true /A
> repo3/db/revs/0/3:0-1.0.t2-2 modify-dir false true false /A
> Using --deltas has produced the correct value, the revision has no mergeinfo
> change.
> The field that differs is mergeinfo-mod, introduced in 1.9. The problem
> doesn't occur in earlier versions.
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