040000 tree 396d55f4d7b9901470d5d70fc5615a6e21525c4c	re.alg.match
040000 tree 20e0110ef0c8c9c85761684bb66cda1de628977d	re.alg.replace
040000 tree f14dd37c770a1f941a11c39da5ae5670dbb56f76	re.alg.search
040000 tree 3b6b0e6627e5b8492f5920ca783ef97de29b12b6	re.except