File externals cannot be removed

Hi folks,

Just testing the new file externals as documented in the 1.6 release
notes and I don't seem to be able to delete a file external once it is
set. This is with the TortoiseSVN nightly build commandline client,
which is built against the head of the SVN 1.6.x branch.

Windows recipe I'm afraid, but you get the idea.

set SVN="C:\Program Files\TortoiseSVN\bin\svn"
c:
cd \temp
rd /s /q repos
rd /s /q wc
svnadmin create repos
md wc
cd wc
"C:\Program Files\TortoiseSVN\bin\svn" co file:///c:/temp/repos .
:: Sorry about the fixed paths. Back to normal now.
echo hello > alpha.txt
%SVN% add alpha.txt
%SVN% ci -m "" .
%SVN% propset svn:externals "^/alpha.txt beta.txt" .
%SVN% up
%SVN% propdel svn:externals .
%SVN% up
del beta.txt
%SVN% up
cd ..

Now I have no svn:external property set, but the file external is
still there and cannot be deleted. Manual deletion fails because svn
up restores it. svn rm doesn't work for externals.

Committing after adding the svn:externals doesn't help, nor does
committing after deleting it. The only fix seems to be a fresh
checkout. Am I missing something obvious?

Simon

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