view mercurial/node.py @ 18227:720308f741cb

dispatch: show empty filename in OSError aborts

Mercurial would sometimes exit with:
  abort: No such file or directory
where str of the actual OSError exception was the more helpful:
  [Errno 2] No such file or directory: ''

The exception will now always show the filename and quote it:
  abort: No such file or directory: ''

# 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.

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])