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https://issues.apache.org/jira/browse/SVN-4854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17093477#comment-17093477
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Daniel Shahaf commented on SVN-4854:
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I think that might be a bug in 1.8.15 that has been fixed.
svnmucc is a thin wrapper around the svn_delta_editor_t interface. That
interface is very sensitive to order of operations, so I wouldn't expect
svnmucc to reorder its operation arguments.
The first operation, «mkdir /foo/bar», would fail with "/foo doesn't
exist" — if it ran, which it didn't get a chance to. Before even
starting the edit drive, svnmucc reviewed the set of operations and
determined, without contacting the server, that the given sequence of
operations cannot possibly succeed _regardless of the current state of
the repository_: in the editor interface, «mkdir /foo» fails when /foo
exists, and the previous command, «mkdir /foo/bar», can only succeed if
/foo exists. So you got an error about /foo existing.
However, as you say, the error message is inaccurate. It's not that
/foo exists in the repository; it's that it is _implied_ to exist by an
earlier command.
I vote to reword the error message.
> a problem of svnmucc mkdir
> --------------------------
>
> Key: SVN-4854
> URL: https://issues.apache.org/jira/browse/SVN-4854
> Project: Subversion
> Issue Type: Bug
> Components: svnmucc
> Affects Versions: 1.10.6
> Environment: CentOS 6.6
> Subversion 1.10.6
> Reporter: haiyuan qian
> Priority: Major
>
> # /usr/local/bin/svnmucc -U URL -m MESSAGE mkdir '/parent/subdir' mkdir
> '/parent'
> svnmucc: E160020: Path 'parent' already exists
>
> But:
> # /usr/local/bin/svnmucc -U URL -m MESSAGE mkdir '/parent' mkdir
> '/parent/subdir'
> r506 committed by root at 2020-04-27T12:18:21.419619Z
> It works.
>
> In the version 1.8.15, both of these two commands can be run;
> Also the error of the first command is definitely wrong. The '/parent'
> directory does not exist.
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