We have several subversion repositories: one for common code and one for each top level project. The top level projects have a svn:external link to the trunk of the common repository.

Before we build a release of a project we create a branch of the top level project and also create a parallel branch in the common repository.

How can we automatically ensure the svn:external property in the branched top level project points to the parallel branch in the common directory - currently it will be pointing to "trunk" in the common respository. We are currently having to manually edit this in the branched project.

Thanks

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