svn_fs_base__get_node_successors() was implemented over 20 months ago. Right now svn_fs_history_next() has been implemented for both backends and passes a simple unit test (fs-test 37, node_history()).
https://svn.apache.org/repos/asf/subversion/branches/fs-successor-ids/subversion/include/svn_fs.h https://svn.apache.org/repos/asf/subversion/branches/fs-successor-ids/subversion/tests/libsvn_fs/fs-test.c For the code we already have we need to - expand unit test - update design docs - review the code, various tweaks The branch doesn't have code for answering questions such as - where were a given path's parents copied to? - when was a given path deleted? - (questions about merges) - (questions about a directory's properties having changed, as opposed to `something under that directory' having changed) The branch doesn't have yet - consumers of these new APIs
