revlog: use context manager for data file lifetime in checkinlinesize This is clearer, safer and more modern.

revlog: use context manager for index file life time in __init__ This is clearer, safer and more modern.

revlog: move index file opening in a method Having file operation centralized into a single spot help to factor common logic out (eg: special flag handling according to the mode). It is also the first step to simplify file handling during batch operation (eg: revlog cloning). However, that part does not seems to be a hotspot yet.

revlog: move datafile opening in a method Having file operation centralized into a single spot help to factor common logic out. It is also the first step to simplify file handling during batch operation (eg: revlog cloning). However, that part does not seems to be a hotspot yet.

parseindex: implement context manager method on the wrapper This is needed for incoming cleanups.

parseindex: also forward keyword argument in a debug wrapper Otherwise, it gets in the way of a coming refactoring.

dumprevlog: handle being passed a mode parameter This makes it closer to an actual file opener. Otherwise, it gets in the way of a coming refactoring.

changelog: add the missing 'closed' property on 'appender' object This mimic file object further.

changelog: implement context manager method for 'appender' object This object mimics a file and was missing the context manager API.

diff: improve ui.write performance when not coloring on Windows Differential Revision: https://phab.mercurial-scm.org/D2022

hgsh: enable clang-format Nothing looks awful, so we can just turn it on. Differential Revision: https://phab.mercurial-scm.org/D2059

chg: enable clang-format on all .c and .h files Nothing in here looks awful, so I think we may as well just do it. # skip-blame because it's just reformatting with no functionality change Differential Revision: https://phab.mercurial-scm.org/D2058

python3: whitelist an additional 11 tests I think these are mostly the result of Pulkit's recent work. Thanks! Differential Revision: https://phab.mercurial-scm.org/D2078

ui: add explicit path to write prompt text bypassing buffers The prompt= flag was added at e35d7f131483, when colorui had its own write() function. Since we've merged colorui to ui, we can simply call the unbuffered write() function.

ui: write prompt text in ui.prompt(), not in ui._readline() self.label() is replaced by label= option, which should make it clearer why we can't pass the text to raw_input(prompt).

logcmdutil: mark changesetprinter.showpatch() as private

logcmdutil: drop default arguments from changesetdisplayer/templater() calls

logcmdutil: make default parameters of changesetprinters consistent

mdiff: use str.startswith/endswith() instead of slicing

patch: unify check_binary and binary flags Follows up 079b27b5a869. If opts.text=True, check_binary is ignored, so we can just pass the binary flag to unidiff(). perfunidiff now takes any inputs as text files, which I think is a desired behavior.

py3: make sure we open the file in bytes mode # skip-blame because we are just adding b Differential Revision: https://phab.mercurial-scm.org/D2077

py3: use bytes instead of str Differential Revision: https://phab.mercurial-scm.org/D2076

py3: add b'' prefixes to string literals in test files # skip-blame because we are just adding b'' Differential Revision: https://phab.mercurial-scm.org/D2075

py3: use range instead of xrange xrange is not available on Python 3. Differential Revision: https://phab.mercurial-scm.org/D2074

py3: use open() instead of file() file() is not present in Python 3. Differential Revision: https://phab.mercurial-scm.org/D2073

py3: use pycompat.bytestr to convert _b85chars to bytes The tranformer does append b'' to the value and make that a bytes but bytes in Python 3 returns the ascii value on getting characters using indexing. Characters of this string are queried using indexing multiple times in the file and to support that we use pycompat.bytestr which returns the bytechrs using indexing. Differential Revision: https://phab.mercurial-scm.org/D2072

py3: use pycompat.bytechr instead of chr Differential Revision: https://phab.mercurial-scm.org/D2071

py3: use pycompat.ziplist instead of zip zip returns a zip object instead of a list on Python 3. Differential Revision: https://phab.mercurial-scm.org/D2070