flagutil: create a `mercurial.revlogutils.flagutil` module
The flagprocessings logic is duplicated in 2 extra places, and usually in a less
robust flavor. This is a maintenance nightmare that I would like to see cleaned
up. To do so I am creating a `flagutil` module to move flag processings related
code and make it easily reusable by other code.
# flagutils.py - code to deal with revlog flags and their processors
#
# Copyright 2016 Remi Chaintron <remi@fb.com>
# Copyright 2016-2019 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from .constants import (
REVIDX_DEFAULT_FLAGS,
REVIDX_ELLIPSIS,
REVIDX_EXTSTORED,
REVIDX_FLAGS_ORDER,
REVIDX_ISCENSORED,
REVIDX_KNOWN_FLAGS,
REVIDX_RAWTEXT_CHANGING_FLAGS,
)
# blanked usage of all the name to prevent pyflakes constraints
# We need these name available in the module for extensions.
REVIDX_ISCENSORED
REVIDX_ELLIPSIS
REVIDX_EXTSTORED
REVIDX_DEFAULT_FLAGS
REVIDX_FLAGS_ORDER
REVIDX_KNOWN_FLAGS
REVIDX_RAWTEXT_CHANGING_FLAGS