Mercurial > hg
annotate hgext/win32text.py @ 36473:ab5f18a9dcac
py3: slice over bytes or use startswith() to prevent getting ascii values
Differential Revision: https://phab.mercurial-scm.org/D2496
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Wed, 28 Feb 2018 19:54:10 +0530 |
parents | 01496e9269f9 |
children | f0b6fbea00cf |
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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 |
10263 | 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 registrar, |
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53 util, |
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54 ) |
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55 |
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56 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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57 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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58 # be specifying the version(s) of Mercurial they are tested with, or |
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59 # leave the attribute unspecified. |
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60 testedwith = 'ships-with-hg-core' |
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61 |
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62 configtable = {} |
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63 configitem = registrar.configitem(configtable) |
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64 |
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65 configitem('win32text', 'warn', |
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66 default=True, |
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67 ) |
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68 |
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69 # regexp for single LF without CR preceding. |
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70 re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE) |
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71 |
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72 newlinestr = {'\r\n': 'CRLF', '\r': 'CR'} |
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73 filterstr = {'\r\n': 'clever', '\r': 'mac'} |
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74 |
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75 def checknewline(s, newline, ui=None, repo=None, filename=None): |
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76 # warn if already has 'newline' in repository. |
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77 # it might cause unexpected eol conversion. |
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78 # see issue 302: |
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79 # https://bz.mercurial-scm.org/302 |
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80 if newline in s and ui and filename and repo: |
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81 ui.warn(_('WARNING: %s already has %s line endings\n' |
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82 'and does not need EOL conversion by the win32text plugin.\n' |
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83 'Before your next commit, please reconsider your ' |
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84 'encode/decode settings in \nMercurial.ini or %s.\n') % |
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85 (filename, newlinestr[newline], repo.vfs.join('hgrc'))) |
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86 |
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87 def dumbdecode(s, cmd, **kwargs): |
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88 checknewline(s, '\r\n', **kwargs) |
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89 # replace single LF to CRLF |
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90 return re_single_lf.sub('\\1\r\n', s) |
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91 |
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92 def dumbencode(s, cmd): |
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93 return s.replace('\r\n', '\n') |
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94 |
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95 def macdumbdecode(s, cmd, **kwargs): |
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96 checknewline(s, '\r', **kwargs) |
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97 return s.replace('\n', '\r') |
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98 |
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99 def macdumbencode(s, cmd): |
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100 return s.replace('\r', '\n') |
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101 |
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102 def cleverdecode(s, cmd, **kwargs): |
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103 if not util.binary(s): |
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104 return dumbdecode(s, cmd, **kwargs) |
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105 return s |
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106 |
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107 def cleverencode(s, cmd): |
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108 if not util.binary(s): |
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109 return dumbencode(s, cmd) |
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110 return s |
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111 |
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112 def macdecode(s, cmd, **kwargs): |
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113 if not util.binary(s): |
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115 return s | |
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116 |
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117 def macencode(s, cmd): |
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118 if not util.binary(s): |
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120 return s | |
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121 |
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122 _filters = { |
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123 'dumbdecode:': dumbdecode, |
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124 'dumbencode:': dumbencode, |
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125 'cleverdecode:': cleverdecode, |
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126 'cleverencode:': cleverencode, |
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127 'macdumbdecode:': macdumbdecode, |
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128 'macdumbencode:': macdumbencode, |
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129 'macdecode:': macdecode, |
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130 'macencode:': macencode, |
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131 } |
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132 |
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133 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): |
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134 halt = False |
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135 seen = set() |
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136 # we try to walk changesets in reverse order from newest to |
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137 # oldest, so that if we see a file multiple times, we take the |
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138 # newest version as canonical. this prevents us from blocking a |
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139 # changegroup that contains an unacceptable commit followed later |
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140 # by a commit that fixes the problem. |
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141 tip = repo['tip'] |
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142 for rev in xrange(repo.changelog.tiprev(), repo[node].rev() - 1, -1): |
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143 c = repo[rev] |
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144 for f in c.files(): |
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145 if f in seen or f not in tip or f not in c: |
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146 continue |
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147 seen.add(f) |
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148 data = c[f].data() |
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149 if not util.binary(data) and newline in data: |
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150 if not halt: |
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151 ui.warn(_('attempt to commit or push text file(s) ' |
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152 'using %s line endings\n') % |
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153 newlinestr[newline]) |
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154 ui.warn(_('in %s: %s\n') % (short(c.node()), f)) |
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155 halt = True |
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156 if halt and hooktype == 'pretxnchangegroup': |
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157 crlf = newlinestr[newline].lower() |
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158 filter = filterstr[newline] |
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159 ui.warn(_('\nTo prevent this mistake in your local repository,\n' |
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160 'add to Mercurial.ini or .hg/hgrc:\n' |
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161 '\n' |
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162 '[hooks]\n' |
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163 'pretxncommit.%s = python:hgext.win32text.forbid%s\n' |
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164 '\n' |
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165 'and also consider adding:\n' |
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166 '\n' |
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167 '[extensions]\n' |
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168 'win32text =\n' |
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169 '[encode]\n' |
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170 '** = %sencode:\n' |
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171 '[decode]\n' |
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172 '** = %sdecode:\n') % (crlf, crlf, filter, filter)) |
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173 return halt |
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174 |
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175 def forbidcrlf(ui, repo, hooktype, node, **kwargs): |
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176 return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs) |
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177 |
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178 def forbidcr(ui, repo, hooktype, node, **kwargs): |
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179 return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs) |
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180 |
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181 def reposetup(ui, repo): |
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182 if not repo.local(): |
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183 return |
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184 for name, fn in _filters.iteritems(): |
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185 repo.adddatafilter(name, fn) |
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186 |
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187 def extsetup(ui): |
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188 # deprecated config: win32text.warn |
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189 if ui.configbool('win32text', 'warn'): |
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190 ui.warn(_("win32text is deprecated: " |
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191 "https://mercurial-scm.org/wiki/Win32TextExtension\n")) |