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view mercurial/node.py @ 13135:1c1ca9d393f4 stable

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tag: abort if not at a branch head (issue2552) Since it's usually only desirable to make tag commits on top of branch heads, abort if the working dir parent is not a branch head. -f/--force may be passed to commit at a non-head anyway. Does not abort if working dir parent is a named branch head but not a topological head.
author Kevin Bullock <kbullock@ringworld.org>
date Mon, 06 Dec 2010 22:04:10 -0600
parents 25e572394f5c
children 1a5211f2f87f
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# 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])