Mercurial > hg
annotate hgext/win32text.py @ 24992:7df090c9c9fe
localrepo: use changelog.hasnode instead of self.__contains__
Before this patch, releasing the store lock implies the actions below, when
the transaction is aborted:
1. "commithook()" scheduled in "localrepository.commit()" is invoked
2. "changectx.__init__()" is invoked via "self.__contains__()"
3. specified ID is examined against "repo.dirstate.p1()"
4. validation function is invoked in "dirstate.p1()"
In subsequent patches, "dirstate.invalidate()" invocations for
discarding changes are replaced with "dirstateguard", but discarding
changes by "dirstateguard" is executed after releasing the store lock:
resources are acquired in "wlock => dirstateguard => store lock" order,
and are released in reverse order.
This may cause that "dirstate.p1()" still refers to the changeset to be
rolled-back at (4) above: pushing multiple patches by "hg qpush" is
a typical case.
When releasing the store lock, such changesets are:
- not contained in "repo.changelog", if it is reloaded from
".hg/00changelog.i", as that file was already truncated by
"transaction.abort()"
- still contained in it, otherwise
(this "dirty read" problem is discussed in "Transaction Plan"
http://mercurial.selenic.com/wiki/TransactionPlan)
Validation function shows "unknown working parent" warning in the
former case, but reloading "repo.changelog" depends on the timestamp
of ".hg/00changelog.i". This causes occasional test failures.
In the case of scheduled "commithook()", it just wants to examine
whether "node ID" of committed changeset is still valid or not. Other
examinations implied in "changectx.__init__()" are meaningless.
To avoid showing the "unknown working parent" warning irregularly, this
patch uses "changelog.hasnode()" instead of "node in self" to examine
existence of committed changeset.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Thu, 07 May 2015 12:07:10 +0900 |
parents | 23146e4d9cee |
children | 80c5b2666a96 |
rev | line source |
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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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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 mercurial.i18n import _ |
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45 from mercurial.node import short |
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46 from mercurial import util |
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47 import re |
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48 |
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49 testedwith = 'internal' |
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50 |
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51 # regexp for single LF without CR preceding. |
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52 re_single_lf = re.compile('(^|[^\r])\n', re.MULTILINE) |
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53 |
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54 newlinestr = {'\r\n': 'CRLF', '\r': 'CR'} |
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55 filterstr = {'\r\n': 'clever', '\r': 'mac'} |
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56 |
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57 def checknewline(s, newline, ui=None, repo=None, filename=None): |
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58 # warn if already has 'newline' in repository. |
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59 # it might cause unexpected eol conversion. |
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60 # see issue 302: |
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61 # http://mercurial.selenic.com/bts/issue302 |
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62 if newline in s and ui and filename and repo: |
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63 ui.warn(_('WARNING: %s already has %s line endings\n' |
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64 'and does not need EOL conversion by the win32text plugin.\n' |
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65 'Before your next commit, please reconsider your ' |
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66 'encode/decode settings in \nMercurial.ini or %s.\n') % |
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67 (filename, newlinestr[newline], repo.join('hgrc'))) |
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68 |
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69 def dumbdecode(s, cmd, **kwargs): |
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70 checknewline(s, '\r\n', **kwargs) |
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71 # replace single LF to CRLF |
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72 return re_single_lf.sub('\\1\r\n', s) |
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73 |
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74 def dumbencode(s, cmd): |
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75 return s.replace('\r\n', '\n') |
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76 |
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77 def macdumbdecode(s, cmd, **kwargs): |
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78 checknewline(s, '\r', **kwargs) |
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79 return s.replace('\n', '\r') |
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80 |
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81 def macdumbencode(s, cmd): |
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82 return s.replace('\r', '\n') |
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83 |
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84 def cleverdecode(s, cmd, **kwargs): |
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85 if not util.binary(s): |
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86 return dumbdecode(s, cmd, **kwargs) |
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87 return s |
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88 |
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89 def cleverencode(s, cmd): |
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90 if not util.binary(s): |
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91 return dumbencode(s, cmd) |
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92 return s |
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93 |
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94 def macdecode(s, cmd, **kwargs): |
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95 if not util.binary(s): |
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97 return s | |
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98 |
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99 def macencode(s, cmd): |
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100 if not util.binary(s): |
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102 return s | |
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103 |
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104 _filters = { |
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105 'dumbdecode:': dumbdecode, |
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106 'dumbencode:': dumbencode, |
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107 'cleverdecode:': cleverdecode, |
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108 'cleverencode:': cleverencode, |
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109 'macdumbdecode:': macdumbdecode, |
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110 'macdumbencode:': macdumbencode, |
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111 'macdecode:': macdecode, |
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112 'macencode:': macencode, |
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113 } |
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114 |
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115 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): |
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116 halt = False |
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117 seen = set() |
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118 # we try to walk changesets in reverse order from newest to |
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119 # oldest, so that if we see a file multiple times, we take the |
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120 # newest version as canonical. this prevents us from blocking a |
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121 # changegroup that contains an unacceptable commit followed later |
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122 # by a commit that fixes the problem. |
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123 tip = repo['tip'] |
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124 for rev in xrange(len(repo) - 1, repo[node].rev() - 1, -1): |
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125 c = repo[rev] |
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126 for f in c.files(): |
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127 if f in seen or f not in tip or f not in c: |
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128 continue |
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129 seen.add(f) |
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130 data = c[f].data() |
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131 if not util.binary(data) and newline in data: |
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132 if not halt: |
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133 ui.warn(_('attempt to commit or push text file(s) ' |
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134 'using %s line endings\n') % |
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135 newlinestr[newline]) |
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136 ui.warn(_('in %s: %s\n') % (short(c.node()), f)) |
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137 halt = True |
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138 if halt and hooktype == 'pretxnchangegroup': |
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139 crlf = newlinestr[newline].lower() |
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140 filter = filterstr[newline] |
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141 ui.warn(_('\nTo prevent this mistake in your local repository,\n' |
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142 'add to Mercurial.ini or .hg/hgrc:\n' |
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143 '\n' |
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144 '[hooks]\n' |
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145 'pretxncommit.%s = python:hgext.win32text.forbid%s\n' |
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146 '\n' |
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147 'and also consider adding:\n' |
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148 '\n' |
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149 '[extensions]\n' |
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150 'win32text =\n' |
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151 '[encode]\n' |
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152 '** = %sencode:\n' |
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153 '[decode]\n' |
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154 '** = %sdecode:\n') % (crlf, crlf, filter, filter)) |
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155 return halt |
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156 |
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157 def forbidcrlf(ui, repo, hooktype, node, **kwargs): |
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158 return forbidnewline(ui, repo, hooktype, node, '\r\n', **kwargs) |
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159 |
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160 def forbidcr(ui, repo, hooktype, node, **kwargs): |
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161 return forbidnewline(ui, repo, hooktype, node, '\r', **kwargs) |
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162 |
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163 def reposetup(ui, repo): |
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164 if not repo.local(): |
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165 return |
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166 for name, fn in _filters.iteritems(): |
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167 repo.adddatafilter(name, fn) |
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168 |
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169 def extsetup(ui): |
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170 if ui.configbool('win32text', 'warn', True): |
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171 ui.warn(_("win32text is deprecated: " |
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172 "http://mercurial.selenic.com/wiki/Win32TextExtension\n")) |