revset: changed limit revset implementation to work with lazy revsets
Performance benchmarking:
$ time hg log -qr "first(branch(default))"
0:9117c6561b0b
real 0m3.130s
user 0m3.025s
sys 0m0.074s
$ time ./hg log -qr "first(branch(default))"
0:9117c6561b0b
real 0m0.300s
user 0m0.198s
sys 0m0.069s
# 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])