mercurial/node.py

config: update evolution-related config

Update the evolution helpers function to support both old-style configuration and
new-style configuration:

    experimental.evolution=all is renamed into experimental.evolution=true

    experimental.evolution=createmarkers is renamed into
    experimental.evolution.createmarkers=true

    experimental.evolution=allowunstable is renamed into
    experimental.evolution.allowunstable=true

    experimental.evolution=exchange is renamed into
    experimental.evolution.exchange=true

We choose to not rename individual config options; keeping the same names
would easy the transition for users but it's something that could be easily
done in the future.

Differential Revision: https://phab.mercurial-scm.org/D1147

# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# 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 binascii

# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify

nullrev = -1
nullid = b"\0" * 20
nullhex = hex(nullid)

# Phony node value to stand-in for new files in some uses of
# manifests.
newnodeid = '!' * 20
addednodeid = ('0' * 15) + 'added'
modifiednodeid = ('0' * 12) + 'modified'

wdirnodes = {newnodeid, addednodeid, modifiednodeid}

# pseudo identifiers for working directory
# (they are experimental, so don't add too many dependencies on them)
wdirrev = 0x7fffffff
wdirid = b"\xff" * 20
wdirhex = hex(wdirid)

def short(node):
    return hex(node[:6])