new parameters and edge cases.
Split 'common/' into commit '871b6536d6c7e2b89f1ee304ade81385a29bf7e5'

git-subtree-dir: common
git-subtree-mainline: 3c1ec08499e97a274564815095d8cd5cfd6cffaf
git-subtree-split: 871b6536d6c7e2b89f1ee304ade81385a29bf7e5