Don't abort when backup files already exist. Don't allow alternative names. Rationale: - When the user wants to revert, he shouldn't be stopped from doing this just because some old backups will be overwritten. - To not clobber important files by accident, alternative names for backup files were disabled. As the backup target now has a fixed name, the user doesn't have to be informed about the backup copy (unless --verbose)

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"""

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node.py - basic nodeid manipulation for mercurial

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Copyright 2005 Matt Mackall <mpm@selenic.com>

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This software may be used and distributed according to the terms

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of the GNU General Public License, incorporated herein by reference.

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"""

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import binascii

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nullid = "\0" * 20

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def hex(node):

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    return binascii.hexlify(node)

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def bin(node):

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    return binascii.unhexlify(node)

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def short(node):

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    return hex(node[:6])