ingo@aeolus trunk default-r22157 (tip) ~/ottd/trunk $ hg log -u planetmaker -r'children(branchpoint())' --template='{branch}\n' | wc -l

14

ingo@aeolus trunk default-r22157 (tip) ~/ottd/trunk $ hg log -u planetmaker -r'children(branchpoint()) and not closed()' --template='{branch}\n' | wc -l

14