Mercurial > hg
annotate hgext/win32text.py @ 47280:1766130fe9ba
dirstate-v2: Change the on-disk format when the requirement is enabled
For now, the format is the same except with an additional marker at the start.
This marker is redundant: for existing repositories it is `.hg/requires` that
determines which format to use. For new repositories, it is the new
`format.exp-dirstate-v2` config. There is no upgrade or downgrade so far.
Most of the changes are about plumbing a boolean through layers of APIs to
indicate which format should be used.
Differential Revision: https://phab.mercurial-scm.org/D10719
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Wed, 19 May 2021 13:15:00 +0200 |
parents | d4ba4d51f85f |
children | f5dea753fe4e |
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 Olivia Mackall <olivia@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 __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 short |
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49 from mercurial import ( |
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50 pycompat, |
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51 registrar, |
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52 ) |
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53 from mercurial.utils import stringutil |
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54 |
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55 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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56 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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57 # be specifying the version(s) of Mercurial they are tested with, or |
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58 # leave the attribute unspecified. |
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59 testedwith = b'ships-with-hg-core' |
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60 |
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61 configtable = {} |
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62 configitem = registrar.configitem(configtable) |
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63 |
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64 configitem( |
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65 b'win32text', |
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66 b'warn', |
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67 default=True, |
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68 ) |
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69 |
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70 # regexp for single LF without CR preceding. |
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71 re_single_lf = re.compile(b'(^|[^\r])\n', re.MULTILINE) |
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72 |
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73 newlinestr = {b'\r\n': b'CRLF', b'\r': b'CR'} |
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74 filterstr = {b'\r\n': b'clever', b'\r': b'mac'} |
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75 |
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76 |
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77 def checknewline(s, newline, ui=None, repo=None, filename=None): |
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78 # warn if already has 'newline' in repository. |
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79 # it might cause unexpected eol conversion. |
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80 # see issue 302: |
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81 # https://bz.mercurial-scm.org/302 |
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82 if newline in s and ui and filename and repo: |
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83 ui.warn( |
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84 _( |
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85 b'WARNING: %s already has %s line endings\n' |
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86 b'and does not need EOL conversion by the win32text plugin.\n' |
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87 b'Before your next commit, please reconsider your ' |
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88 b'encode/decode settings in \nMercurial.ini or %s.\n' |
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89 ) |
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90 % (filename, newlinestr[newline], repo.vfs.join(b'hgrc')) |
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91 ) |
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92 |
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93 |
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94 def dumbdecode(s, cmd, **kwargs): |
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95 checknewline(s, b'\r\n', **kwargs) |
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96 # replace single LF to CRLF |
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97 return re_single_lf.sub(b'\\1\r\n', s) |
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98 |
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99 |
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100 def dumbencode(s, cmd): |
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101 return s.replace(b'\r\n', b'\n') |
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102 |
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103 |
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104 def macdumbdecode(s, cmd, **kwargs): |
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105 checknewline(s, b'\r', **kwargs) |
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106 return s.replace(b'\n', b'\r') |
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107 |
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108 |
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109 def macdumbencode(s, cmd): |
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110 return s.replace(b'\r', b'\n') |
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111 |
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113 def cleverdecode(s, cmd, **kwargs): |
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114 if not stringutil.binary(s): |
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115 return dumbdecode(s, cmd, **kwargs) |
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116 return s |
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117 |
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118 |
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119 def cleverencode(s, cmd): |
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120 if not stringutil.binary(s): |
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121 return dumbencode(s, cmd) |
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122 return s |
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123 |
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124 |
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125 def macdecode(s, cmd, **kwargs): |
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126 if not stringutil.binary(s): |
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128 return s | |
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129 |
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130 |
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131 def macencode(s, cmd): |
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132 if not stringutil.binary(s): |
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134 return s | |
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135 |
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136 |
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137 _filters = { |
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138 b'dumbdecode:': dumbdecode, |
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139 b'dumbencode:': dumbencode, |
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140 b'cleverdecode:': cleverdecode, |
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141 b'cleverencode:': cleverencode, |
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142 b'macdumbdecode:': macdumbdecode, |
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143 b'macdumbencode:': macdumbencode, |
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144 b'macdecode:': macdecode, |
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145 b'macencode:': macencode, |
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146 } |
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147 |
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148 |
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149 def forbidnewline(ui, repo, hooktype, node, newline, **kwargs): |
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150 halt = False |
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151 seen = set() |
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152 # we try to walk changesets in reverse order from newest to |
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153 # oldest, so that if we see a file multiple times, we take the |
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154 # newest version as canonical. this prevents us from blocking a |
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155 # changegroup that contains an unacceptable commit followed later |
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156 # by a commit that fixes the problem. |
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157 tip = repo[b'tip'] |
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158 for rev in pycompat.xrange( |
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159 repo.changelog.tiprev(), repo[node].rev() - 1, -1 |
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160 ): |
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161 c = repo[rev] |
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162 for f in c.files(): |
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163 if f in seen or f not in tip or f not in c: |
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164 continue |
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165 seen.add(f) |
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166 data = c[f].data() |
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167 if not stringutil.binary(data) and newline in data: |
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168 if not halt: |
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169 ui.warn( |
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170 _( |
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171 b'attempt to commit or push text file(s) ' |
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172 b'using %s line endings\n' |
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173 ) |
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174 % newlinestr[newline] |
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175 ) |
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176 ui.warn(_(b'in %s: %s\n') % (short(c.node()), f)) |
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177 halt = True |
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178 if halt and hooktype == b'pretxnchangegroup': |
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179 crlf = newlinestr[newline].lower() |
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180 filter = filterstr[newline] |
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181 ui.warn( |
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182 _( |
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183 b'\nTo prevent this mistake in your local repository,\n' |
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184 b'add to Mercurial.ini or .hg/hgrc:\n' |
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185 b'\n' |
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186 b'[hooks]\n' |
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187 b'pretxncommit.%s = python:hgext.win32text.forbid%s\n' |
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188 b'\n' |
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189 b'and also consider adding:\n' |
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190 b'\n' |
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191 b'[extensions]\n' |
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192 b'win32text =\n' |
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193 b'[encode]\n' |
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194 b'** = %sencode:\n' |
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195 b'[decode]\n' |
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196 b'** = %sdecode:\n' |
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197 ) |
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198 % (crlf, crlf, filter, filter) |
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199 ) |
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200 return halt |
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201 |
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202 |
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203 def forbidcrlf(ui, repo, hooktype, node, **kwargs): |
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204 return forbidnewline(ui, repo, hooktype, node, b'\r\n', **kwargs) |
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205 |
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206 |
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207 def forbidcr(ui, repo, hooktype, node, **kwargs): |
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208 return forbidnewline(ui, repo, hooktype, node, b'\r', **kwargs) |
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209 |
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210 |
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211 def reposetup(ui, repo): |
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212 if not repo.local(): |
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213 return |
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214 for name, fn in pycompat.iteritems(_filters): |
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215 repo.adddatafilter(name, fn) |
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216 |
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217 |
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218 def extsetup(ui): |
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219 # deprecated config: win32text.warn |
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220 if ui.configbool(b'win32text', b'warn'): |
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221 ui.warn( |
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222 _( |
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223 b"win32text is deprecated: " |
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224 b"https://mercurial-scm.org/wiki/Win32TextExtension\n" |
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225 ) |
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226 ) |