bug when wc-wc copy directory to itself

I'm just found bug, so first of I post it here in order to don't forget it.
On Windows, using Subversion 1.4.0
Recipe is clear:

rd /q /s db
rd /q /s wc

svnadmin create db
svn co file:///c:/tmp/db wc
mkdir wc\dir1
mkdir wc\dir1\dir2
svn add wc\dir1
svn ci -m "Revision 1" wc
svn cp wc/dir1 wc/dir1
svn cp wc/dir1 c:\tmp\wc\dir1

And you'll get:
C:\tmp>svn cp wc/dir1 wc/dir1
svn: Cannot copy path 'wc\dir1' into its own child 'wc\dir1\dir1'

C:\tmp>svn cp wc/dir1 c:\tmp\wc\dir1
svn: Can't create directory
'C:\tmp\wc\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\d
ir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\d
ir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\dir1\.svn\tmp\prop-base':
The filename or exte
nsion is too long.

So it seems Subversion checks child by path instead of URL.

-- 
Ivan Zhakov
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