with: use context manager for transaction in rebase

with: use context manager for transaction in qimport

with: use context manager for transaction in qfinish

with: use context manager for transaction in mercurial_sink

transaction: turn a transaction into a Python context manager This lets us greatly simply acquire/release cycles. If the block completes without raising an exception, the transaction is closed. Code pattern before: try: tr = repo.transaction('x') # zillions of lines of code tr.close() finally: tr.release() And after: with tr.transaction('x'): # ...

with: use context manager for lock in pushphase

with: use context manager in rebuildfncache again

with: use context manager in streamclone consumev1

with: use context manager in manifest

with: use context manager in rename

with: use context manager in resolve

with: use context manager in unbundle

with: use context manager in update

with: use context manager in bisect save_state

with: use context manager in merge update

with: use context manager in _markchanges

with: use context manager in maybeperformlegacystreamclone

with: use context manager in verify

with: use context manager in qrename

with: use context manager in qfinish

with: use context manager in localrepo recover

with: use context manager in streamclone generatev1

with: use context manager in subrepo storeclean

with: use context manager in subrepo _cachestorehash

with: use context manager in largefiles commit

with: use context manager in unshelveabort

with: use context manager for wlock in transplant

with: use context manager for wlock in shelve stripcmd

with: use context manager for lock in continue

with: use context manager for wlock in unshelve