annotate hgext/sparse.py @ 51238:633408a0f2e2

revlog: always use a Rust index for REVLOGv1 if rustext is present We are about to change classes such as `rustext.AncestorsIterator` to take a Rust index, hence we cannot have the option not to use the Rust index. Note: this can be refined depending on whether we want to keep this option or not. We will have to make two versions of `AncestorsIterator` and its sibling to support REVLOGV2 and CHANGELOGv2 anyway. Meanwhile, this is the simplest change to make the tests pass.
author Georges Racinet on incendie.racinet.fr <georges@racinet.fr>
date Fri, 27 Oct 2023 23:29:29 +0200
parents 18c8c18993f0
children fa87eeeb10ca
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1 # sparse.py - allow sparse checkouts of the working directory
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2 #
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3 # Copyright 2014 Facebook, Inc.
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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 """allow sparse checkouts of the working directory (EXPERIMENTAL)
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9
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10 (This extension is not yet protected by backwards compatibility
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11 guarantees. Any aspect may break in future releases until this
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12 notice is removed.)
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13
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14 This extension allows the working directory to only consist of a
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15 subset of files for the revision. This allows specific files or
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16 directories to be explicitly included or excluded. Many repository
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17 operations have performance proportional to the number of files in
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18 the working directory. So only realizing a subset of files in the
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19 working directory can improve performance.
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20
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21 Sparse Config Files
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22 -------------------
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23
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24 The set of files that are part of a sparse checkout are defined by
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25 a sparse config file. The file defines 3 things: includes (files to
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26 include in the sparse checkout), excludes (files to exclude from the
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27 sparse checkout), and profiles (links to other config files).
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28
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29 The file format is newline delimited. Empty lines and lines beginning
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30 with ``#`` are ignored.
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31
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32 Lines beginning with ``%include `` denote another sparse config file
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33 to include. e.g. ``%include tests.sparse``. The filename is relative
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34 to the repository root.
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35
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36 The special lines ``[include]`` and ``[exclude]`` denote the section
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37 for includes and excludes that follow, respectively. It is illegal to
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38 have ``[include]`` after ``[exclude]``.
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39
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40 Non-special lines resemble file patterns to be added to either includes
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41 or excludes. The syntax of these lines is documented by :hg:`help patterns`.
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42 Patterns are interpreted as ``glob:`` by default and match against the
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43 root of the repository.
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44
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45 Exclusion patterns take precedence over inclusion patterns. So even
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46 if a file is explicitly included, an ``[exclude]`` entry can remove it.
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47
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48 For example, say you have a repository with 3 directories, ``frontend/``,
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49 ``backend/``, and ``tools/``. ``frontend/`` and ``backend/`` correspond
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50 to different projects and it is uncommon for someone working on one
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51 to need the files for the other. But ``tools/`` contains files shared
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52 between both projects. Your sparse config files may resemble::
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53
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54 # frontend.sparse
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55 frontend/**
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56 tools/**
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57
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58 # backend.sparse
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59 backend/**
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60 tools/**
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61
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62 Say the backend grows in size. Or there's a directory with thousands
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63 of files you wish to exclude. You can modify the profile to exclude
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64 certain files::
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65
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66 [include]
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67 backend/**
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68 tools/**
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69
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70 [exclude]
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71 tools/tests/**
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72 """
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73
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74
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75 from mercurial.i18n import _
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76 from mercurial import (
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77 cmdutil,
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78 commands,
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79 error,
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80 extensions,
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81 logcmdutil,
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82 merge as mergemod,
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83 pycompat,
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84 registrar,
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85 sparse,
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86 util,
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87 )
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88
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89 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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90 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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91 # be specifying the version(s) of Mercurial they are tested with, or
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92 # leave the attribute unspecified.
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93 testedwith = b'ships-with-hg-core'
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94
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95 cmdtable = {}
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96 command = registrar.command(cmdtable)
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97
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98
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99 def extsetup(ui):
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100 sparse.enabled = True
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101
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102 _setupclone(ui)
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103 _setuplog(ui)
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104 _setupadd(ui)
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105
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106
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107 def replacefilecache(cls, propname, replacement):
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108 """Replace a filecache property with a new class. This allows changing the
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109 cache invalidation condition."""
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110 origcls = cls
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111 assert callable(replacement)
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112 while cls is not object:
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113 if propname in cls.__dict__:
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114 orig = cls.__dict__[propname]
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115 setattr(cls, propname, replacement(orig))
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116 break
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117 cls = cls.__bases__[0]
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118
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119 if cls is object:
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120 raise AttributeError(
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121 _(b"type '%s' has no property '%s'") % (origcls, propname)
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122 )
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123
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124
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125 def _setuplog(ui):
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126 entry = commands.table[b'log|history']
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127 entry[1].append(
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128 (
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129 b'',
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130 b'sparse',
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131 None,
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132 b"limit to changesets affecting the sparse checkout",
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133 )
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134 )
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135
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136 def _initialrevs(orig, repo, wopts):
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137 revs = orig(repo, wopts)
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138 if wopts.opts.get(b'sparse'):
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139 sparsematch = sparse.matcher(repo)
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140
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141 def ctxmatch(rev):
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142 ctx = repo[rev]
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143 return any(f for f in ctx.files() if sparsematch(f))
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144
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145 revs = revs.filter(ctxmatch)
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146 return revs
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147
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148 extensions.wrapfunction(logcmdutil, '_initialrevs', _initialrevs)
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149
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150
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151 def _clonesparsecmd(orig, ui, repo, *args, **opts):
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152 include = opts.get('include')
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153 exclude = opts.get('exclude')
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154 enableprofile = opts.get('enable_profile')
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155 narrow_pat = opts.get('narrow')
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156
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157 # if --narrow is passed, it means they are includes and excludes for narrow
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158 # clone
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159 if not narrow_pat and (include or exclude or enableprofile):
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160
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161 def clonesparse(orig, ctx, *args, **kwargs):
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162 sparse.updateconfig(
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163 ctx.repo().unfiltered(),
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164 {},
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165 include=include,
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166 exclude=exclude,
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167 enableprofile=enableprofile,
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168 usereporootpaths=True,
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169 )
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170 return orig(ctx, *args, **kwargs)
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171
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172 extensions.wrapfunction(mergemod, 'update', clonesparse)
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173 return orig(ui, repo, *args, **opts)
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174
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175
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176 def _setupclone(ui):
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177 entry = commands.table[b'clone']
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178 entry[1].append((b'', b'enable-profile', [], b'enable a sparse profile'))
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179 entry[1].append((b'', b'include', [], b'include sparse pattern'))
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180 entry[1].append((b'', b'exclude', [], b'exclude sparse pattern'))
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181 extensions.wrapcommand(commands.table, b'clone', _clonesparsecmd)
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182
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183
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184 def _setupadd(ui):
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185 entry = commands.table[b'add']
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186 entry[1].append(
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187 (
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188 b's',
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189 b'sparse',
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190 None,
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191 b'also include directories of added files in sparse config',
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192 )
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193 )
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194
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195 def _add(orig, ui, repo, *pats, **opts):
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196 if opts.get('sparse'):
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197 dirs = set()
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198 for pat in pats:
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199 dirname, basename = util.split(pat)
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200 dirs.add(dirname)
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201 sparse.updateconfig(repo, opts, include=list(dirs))
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202 return orig(ui, repo, *pats, **opts)
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203
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204 extensions.wrapcommand(commands.table, b'add', _add)
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205
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206
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207 @command(
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208 b'debugsparse',
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209 [
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210 (
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211 b'I',
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212 b'include',
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213 [],
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214 _(b'include files in the sparse checkout'),
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215 _(b'PATTERN'),
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216 ),
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217 (
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218 b'X',
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219 b'exclude',
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220 [],
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221 _(b'exclude files in the sparse checkout'),
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222 _(b'PATTERN'),
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223 ),
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224 (
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225 b'd',
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226 b'delete',
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227 [],
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228 _(b'delete an include/exclude rule'),
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229 _(b'PATTERN'),
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230 ),
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231 (
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232 b'f',
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233 b'force',
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234 False,
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235 _(b'allow changing rules even with pending changes'),
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236 ),
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237 (
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238 b'',
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239 b'enable-profile',
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240 [],
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241 _(b'enables the specified profile'),
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242 _(b'PATTERN'),
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243 ),
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244 (
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245 b'',
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246 b'disable-profile',
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247 [],
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248 _(b'disables the specified profile'),
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249 _(b'PATTERN'),
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250 ),
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251 (
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252 b'',
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253 b'import-rules',
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254 [],
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255 _(b'imports rules from a file'),
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256 _(b'PATTERN'),
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257 ),
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258 (b'', b'clear-rules', False, _(b'clears local include/exclude rules')),
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259 (
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260 b'',
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261 b'refresh',
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262 False,
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263 _(b'updates the working after sparseness changes'),
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264 ),
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265 (b'', b'reset', False, _(b'makes the repo full again')),
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266 ]
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267 + commands.templateopts,
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268 _(b'[--OPTION]'),
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269 helpbasic=True,
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270 )
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271 def debugsparse(ui, repo, **opts):
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272 """make the current checkout sparse, or edit the existing checkout
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273
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274 The sparse command is used to make the current checkout sparse.
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275 This means files that don't meet the sparse condition will not be
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276 written to disk, or show up in any working copy operations. It does
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277 not affect files in history in any way.
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278
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279 Passing no arguments prints the currently applied sparse rules.
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280
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281 --include and --exclude are used to add and remove files from the sparse
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282 checkout. The effects of adding an include or exclude rule are applied
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283 immediately. If applying the new rule would cause a file with pending
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284 changes to be added or removed, the command will fail. Pass --force to
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285 force a rule change even with pending changes (the changes on disk will
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286 be preserved).
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287
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288 --delete removes an existing include/exclude rule. The effects are
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289 immediate.
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290
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291 --refresh refreshes the files on disk based on the sparse rules. This is
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292 only necessary if .hg/sparse was changed by hand.
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293
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294 --enable-profile and --disable-profile accept a path to a .hgsparse file.
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295 This allows defining sparse checkouts and tracking them inside the
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296 repository. This is useful for defining commonly used sparse checkouts for
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297 many people to use. As the profile definition changes over time, the sparse
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298 checkout will automatically be updated appropriately, depending on which
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299 changeset is checked out. Changes to .hgsparse are not applied until they
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300 have been committed.
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301
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302 --import-rules accepts a path to a file containing rules in the .hgsparse
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303 format, allowing you to add --include, --exclude and --enable-profile rules
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304 in bulk. Like the --include, --exclude and --enable-profile switches, the
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305 changes are applied immediately.
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306
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307 --clear-rules removes all local include and exclude rules, while leaving
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308 any enabled profiles in place.
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309
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310 Returns 0 if editing the sparse checkout succeeds.
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311 """
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312 opts = pycompat.byteskwargs(opts)
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313 include = opts.get(b'include')
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314 exclude = opts.get(b'exclude')
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315 force = opts.get(b'force')
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316 enableprofile = opts.get(b'enable_profile')
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317 disableprofile = opts.get(b'disable_profile')
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318 importrules = opts.get(b'import_rules')
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319 clearrules = opts.get(b'clear_rules')
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320 delete = opts.get(b'delete')
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321 refresh = opts.get(b'refresh')
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322 reset = opts.get(b'reset')
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323 action = cmdutil.check_at_most_one_arg(
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324 opts, b'import_rules', b'clear_rules', b'refresh'
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325 )
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326 updateconfig = bool(
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327 include or exclude or delete or reset or enableprofile or disableprofile
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328 )
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329 count = sum([updateconfig, bool(action)])
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330 if count > 1:
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331 raise error.Abort(_(b"too many flags specified"))
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332
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333 # enable sparse on repo even if the requirements is missing.
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334 repo._has_sparse = True
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335
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336 if count == 0:
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337 if repo.vfs.exists(b'sparse'):
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338 ui.status(repo.vfs.read(b"sparse") + b"\n")
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339 temporaryincludes = sparse.readtemporaryincludes(repo)
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340 if temporaryincludes:
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341 ui.status(
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342 _(b"Temporarily Included Files (for merge/rebase):\n")
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343 )
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344 ui.status((b"\n".join(temporaryincludes) + b"\n"))
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345 return
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346 else:
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347 raise error.Abort(
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348 _(
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349 b'the debugsparse command is only supported on'
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350 b' sparse repositories'
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351 )
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352 )
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353
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354 if updateconfig:
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355 sparse.updateconfig(
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356 repo,
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357 opts,
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358 include=include,
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359 exclude=exclude,
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360 reset=reset,
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361 delete=delete,
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362 enableprofile=enableprofile,
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363 disableprofile=disableprofile,
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364 force=force,
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365 )
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366
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367 if importrules:
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368 sparse.importfromfiles(repo, opts, importrules, force=force)
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369
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370 if clearrules:
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371 sparse.clearrules(repo, force=force)
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372
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373 if refresh:
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parents:
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374 try:
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375 wlock = repo.wlock()
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376 fcounts = pycompat.maplist(
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377 len,
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378 sparse.refreshwdir(
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379 repo, repo.status(), sparse.matcher(repo), force=force
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380 ),
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381 )
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382 sparse.printchanges(
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383 ui,
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diff changeset
384 opts,
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385 added=fcounts[0],
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386 dropped=fcounts[1],
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387 conflicting=fcounts[2],
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388 )
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389 finally:
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390 wlock.release()
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391
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392 del repo._has_sparse