backout: make help more explicit about what backout does
The help for backout explains:
The backout command merges the reverse effect of the reverted
changeset into the working directory.
Unfortunately, that does not make it obvious to a newcomer what the
backout command does. Since it performs a 3-way merge, what is the
common ancestor? Will the result be automatically committed? What is
this reverted changeset --- is it the rev passed with -r on the
command line or its inverse?
So try to clarify the description, avoiding jargon and being
explicit about what happens from the user's perspective.
Thanks to Gilles Moris, Steve Borho, Kevin Bullock, and timeless for
help.
# node.py - basic nodeid manipulation for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import binascii
nullrev = -1
nullid = "\0" * 20
# This ugly style has a noticeable effect in manifest parsing
hex = binascii.hexlify
bin = binascii.unhexlify
def short(node):
return hex(node[:6])