##// END OF EJS Templates
revset: add a 'descend' argument to followlines to return descendants...
revset: add a 'descend' argument to followlines to return descendants This is useful to follow changes in a block of lines forward in the history (for instance, when one wants to find out how a function evolved from a point in history). We added a 'descend' parameter to followlines(), which defaults to False. If True, followlines() returns descendants of startrev. Because context.blockdescendants() does not follow renames, these are not followed by the revset either, so history will end when a rename occurs (as can be seen in tests).

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policy.py
49 lines | 1.5 KiB | text/x-python | PythonLexer
# policy.py - module policy logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
#
# 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
import os
import sys
# Rules for how modules can be loaded. Values are:
#
# c - require C extensions
# allow - allow pure Python implementation when C loading fails
# cffi - required cffi versions (implemented within pure module)
# cffi-allow - allow pure Python implementation if cffi version is missing
# py - only load pure Python modules
#
# By default, require the C extensions for performance reasons.
policy = b'c'
policynoc = (b'cffi', b'cffi-allow', b'py')
policynocffi = (b'c', b'py')
try:
from . import __modulepolicy__
policy = __modulepolicy__.modulepolicy
except ImportError:
pass
# PyPy doesn't load C extensions.
#
# The canonical way to do this is to test platform.python_implementation().
# But we don't import platform and don't bloat for it here.
if '__pypy__' in sys.builtin_module_names:
policy = 'cffi'
# Our C extensions aren't yet compatible with Python 3. So use pure Python
# on Python 3 for now.
if sys.version_info[0] >= 3:
policy = b'py'
# Environment variable can always force settings.
if sys.version_info[0] >= 3:
if 'HGMODULEPOLICY' in os.environ:
policy = os.environ['HGMODULEPOLICY'].encode('utf-8')
else:
policy = os.environ.get('HGMODULEPOLICY', policy)