py3: use pycompat.bytestr() instead of str() Differential Revision: https://phab.mercurial-scm.org/D1795

py3: make regular expressions bytes by prepending b'' Regexes start with r'' and hence transformer skips adding b'' there. # skip-blame because we are just adding b'' Differential Revision: https://phab.mercurial-scm.org/D1794

py3: slice on bytes instead of indexing Indexing returns the ascii value on Python 3. Differential Revision: https://phab.mercurial-scm.org/D1793

py3: use node.hex(h.digest()) instead of h.hexdigest() hashlib.sha1.hexdigest() returns str on Python 3. Differential Revision: https://phab.mercurial-scm.org/D1792

tests: make autodiff.py work on Python 3 This patch adds b'' to string literal to make it compatible with in-core Python 3 compatibility. # skip-blame because we are just adding b'' Differential Revision: https://phab.mercurial-scm.org/D1791

py3: use pycompat.ziplist instead of inbuilt zip zip just like map on Python 3 returns a generator object instead of list. This results in error if we try to iterate over the result once we consume it. We have added pycompat.ziplist which returns a list. Differential Revision: https://phab.mercurial-scm.org/D1790

py3: use bytes and open() instead of file() in test-diff-upgrade.t file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D1789

exchange: use context manager for locks and transaction in unbundle() Note that the transactionmanager doesn't actually create a transaction -- that is done the first time .transaction() is called on it (if at all). Consequently, .close() and .release() won't do anything if no transaction has been created. This makes it a little unusual, but it still works as a context manager. Differential Revision: https://phab.mercurial-scm.org/D1841