annotate hgext/win32text.py @ 41098:cfd95219102d

strip: move attributes shortcut assigned earlier This series will add support for "soft" stripping using the archived phase in addition to the usual heavy weight revlog stripping. First, we need to refactor the strip function to extract logic common to the "soft-strip" case. We are about to extract bits of the strip function into separate functions. Those blocks of code contain variables for frequently accessed attributes. We move those variables outside of the soon to be moved blocks.
author Boris Feld <boris.feld@octobus.net>
date Wed, 02 Jan 2019 05:02:25 +0100
parents e7aa113b14f7
children 2372284d9457
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # win32text.py - LF <-> CRLF/CR translation utilities for Windows/Mac users
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2 #
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3 # Copyright 2005, 2007-2009 Matt Mackall <mpm@selenic.com> and others
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 '''perform automatic newline conversion (DEPRECATED)
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9
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10 Deprecation: The win32text extension requires each user to configure
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11 the extension again and again for each clone since the configuration
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12 is not copied when cloning.
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13
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14 We have therefore made the ``eol`` as an alternative. The ``eol``
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15 uses a version controlled file for its configuration and each clone
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16 will therefore use the right settings from the start.
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17
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18 To perform automatic newline conversion, use::
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19
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20 [extensions]
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21 win32text =
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22 [encode]
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23 ** = cleverencode:
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24 # or ** = macencode:
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25
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26 [decode]
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27 ** = cleverdecode:
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28 # or ** = macdecode:
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29
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30 If not doing conversion, to make sure you do not commit CRLF/CR by accident::
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31
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32 [hooks]
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33 pretxncommit.crlf = python:hgext.win32text.forbidcrlf
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34 # or pretxncommit.cr = python:hgext.win32text.forbidcr
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35
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36 To do the same check on a server to prevent CRLF/CR from being
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37 pushed or pulled::
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38
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39 [hooks]
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40 pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf
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41 # or pretxnchangegroup.cr = python:hgext.win32text.forbidcr
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42 '''
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43
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44 from __future__ import absolute_import
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45
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46 import re
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47 from mercurial.i18n import _
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48 from mercurial.node import (
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49 short,
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50 )
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51 from mercurial import (
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52 pycompat,
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53 registrar,
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54 )
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55 from mercurial.utils import (
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56 stringutil,
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57 )
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58
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59 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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60 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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61 # be specifying the version(s) of Mercurial they are tested with, or
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62 # leave the attribute unspecified.
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63 testedwith = 'ships-with-hg-core'
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64
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65 configtable = {}
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66 configitem = registrar.configitem(configtable)
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67
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68 configitem('win32text', 'warn',
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69 default=True,
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70 )
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71
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72 # regexp for single LF without CR preceding.
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73 re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE)
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74
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75 newlinestr = {'\r\n': 'CRLF', '\r': 'CR'}
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76 filterstr = {'\r\n': 'clever', '\r': 'mac'}
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77
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78 def checknewline(s, newline, ui=None, repo=None, filename=None):
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79 # warn if already has 'newline' in repository.
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80 # it might cause unexpected eol conversion.
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81 # see issue 302:
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82 # https://bz.mercurial-scm.org/302
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83 if newline in s and ui and filename and repo:
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84 ui.warn(_('WARNING: %s already has %s line endings\n'
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85 'and does not need EOL conversion by the win32text plugin.\n'
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86 'Before your next commit, please reconsider your '
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87 'encode/decode settings in \nMercurial.ini or %s.\n') %
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88 (filename, newlinestr[newline], repo.vfs.join('hgrc')))
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89
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90 def dumbdecode(s, cmd, **kwargs):
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91 checknewline(s, '\r\n', **kwargs)
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92 # replace single LF to CRLF
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93 return re_single_lf.sub('\\1\r\n', s)
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94
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95 def dumbencode(s, cmd):
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96 return s.replace('\r\n', '\n')
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97
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98 def macdumbdecode(s, cmd, **kwargs):
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99 checknewline(s, '\r', **kwargs)
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100 return s.replace('\n', '\r')
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101
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102 def macdumbencode(s, cmd):
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103 return s.replace('\r', '\n')
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104
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105 def cleverdecode(s, cmd, **kwargs):
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106 if not stringutil.binary(s):
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107 return dumbdecode(s, cmd, **kwargs)
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108 return s
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109
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110 def cleverencode(s, cmd):
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111 if not stringutil.binary(s):
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112 return dumbencode(s, cmd)
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113 return s
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114
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115 def macdecode(s, cmd, **kwargs):
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116 if not stringutil.binary(s):
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117 return macdumbdecode(s, cmd, **kwargs)
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118 return s
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119
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120 def macencode(s, cmd):
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121 if not stringutil.binary(s):
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122 return macdumbencode(s, cmd)
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123 return s
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124
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125 _filters = {
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126 'dumbdecode:': dumbdecode,
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127 'dumbencode:': dumbencode,
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128 'cleverdecode:': cleverdecode,
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129 'cleverencode:': cleverencode,
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130 'macdumbdecode:': macdumbdecode,
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131 'macdumbencode:': macdumbencode,
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132 'macdecode:': macdecode,
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133 'macencode:': macencode,
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134 }
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135
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136 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs):
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137 halt = False
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138 seen = set()
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139 # we try to walk changesets in reverse order from newest to
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140 # oldest, so that if we see a file multiple times, we take the
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141 # newest version as canonical. this prevents us from blocking a
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142 # changegroup that contains an unacceptable commit followed later
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143 # by a commit that fixes the problem.
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144 tip = repo['tip']
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145 for rev in pycompat.xrange(repo.changelog.tiprev(),
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146 repo[node].rev() - 1, -1):
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147 c = repo[rev]
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148 for f in c.files():
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149 if f in seen or f not in tip or f not in c:
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150 continue
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151 seen.add(f)
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152 data = c[f].data()
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153 if not stringutil.binary(data) and newline in data:
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154 if not halt:
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155 ui.warn(_('attempt to commit or push text file(s) '
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156 'using %s line endings\n') %
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157 newlinestr[newline])
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158 ui.warn(_('in %s: %s\n') % (short(c.node()), f))
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159 halt = True
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160 if halt and hooktype == 'pretxnchangegroup':
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161 crlf = newlinestr[newline].lower()
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162 filter = filterstr[newline]
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163 ui.warn(_('\nTo prevent this mistake in your local repository,\n'
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164 'add to Mercurial.ini or .hg/hgrc:\n'
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165 '\n'
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166 '[hooks]\n'
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167 'pretxncommit.%s = python:hgext.win32text.forbid%s\n'
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168 '\n'
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169 'and also consider adding:\n'
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170 '\n'
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171 '[extensions]\n'
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172 'win32text =\n'
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173 '[encode]\n'
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174 '** = %sencode:\n'
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175 '[decode]\n'
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176 '** = %sdecode:\n') % (crlf, crlf, filter, filter))
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177 return halt
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178
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179 def forbidcrlf(ui, repo, hooktype, node, **kwargs):
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180 return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs)
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181
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182 def forbidcr(ui, repo, hooktype, node, **kwargs):
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183 return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs)
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184
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185 def reposetup(ui, repo):
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186 if not repo.local():
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187 return
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188 for name, fn in _filters.iteritems():
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189 repo.adddatafilter(name, fn)
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190
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191 def extsetup(ui):
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192 # deprecated config: win32text.warn
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193 if ui.configbool('win32text', 'warn'):
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194 ui.warn(_("win32text is deprecated: "
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195 "https://mercurial-scm.org/wiki/Win32TextExtension\n"))