Mercurial > hg
annotate hgext/share.py @ 44125:a5e3f38407cb
tests: restore phabricator tests and regenerate the recordings
These contain the new API chatter. Most of the changes are because some new
commits were created, but they're pretty obviously equivalent. I have no idea
why the last recording contains real data, whereas it previously looked fake.
Differential Revision: https://phab.mercurial-scm.org/D7920
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Thu, 16 Jan 2020 19:48:01 -0500 |
parents | 9f70512ae2cf |
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1 # Copyright 2006, 2007 Matt Mackall <mpm@selenic.com> |
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2 # |
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3 # This software may be used and distributed according to the terms of the |
10263 | 4 # GNU General Public License version 2 or any later version. |
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5 |
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6 '''share a common history between several working directories |
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7 |
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8 Automatic Pooled Storage for Clones |
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9 ----------------------------------- |
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10 |
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11 When this extension is active, :hg:`clone` can be configured to |
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12 automatically share/pool storage across multiple clones. This |
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13 mode effectively converts :hg:`clone` to :hg:`clone` + :hg:`share`. |
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14 The benefit of using this mode is the automatic management of |
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15 store paths and intelligent pooling of related repositories. |
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16 |
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17 The following ``share.`` config options influence this feature: |
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18 |
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19 ``share.pool`` |
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20 Filesystem path where shared repository data will be stored. When |
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21 defined, :hg:`clone` will automatically use shared repository |
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22 storage instead of creating a store inside each clone. |
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23 |
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24 ``share.poolnaming`` |
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25 How directory names in ``share.pool`` are constructed. |
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26 |
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27 "identity" means the name is derived from the first changeset in the |
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28 repository. In this mode, different remotes share storage if their |
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29 root/initial changeset is identical. In this mode, the local shared |
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30 repository is an aggregate of all encountered remote repositories. |
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31 |
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32 "remote" means the name is derived from the source repository's |
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33 path or URL. In this mode, storage is only shared if the path or URL |
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34 requested in the :hg:`clone` command matches exactly to a repository |
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35 that was cloned before. |
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36 |
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37 The default naming mode is "identity". |
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38 ''' |
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39 |
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40 from __future__ import absolute_import |
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41 |
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42 import errno |
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43 from mercurial.i18n import _ |
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44 from mercurial import ( |
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45 bookmarks, |
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46 commands, |
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47 error, |
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48 extensions, |
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49 hg, |
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50 registrar, |
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51 txnutil, |
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52 util, |
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53 ) |
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54 |
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55 cmdtable = {} |
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56 command = registrar.command(cmdtable) |
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57 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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58 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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59 # be specifying the version(s) of Mercurial they are tested with, or |
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60 # leave the attribute unspecified. |
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61 testedwith = b'ships-with-hg-core' |
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62 |
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63 |
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64 @command( |
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65 b'share', |
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66 [ |
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67 (b'U', b'noupdate', None, _(b'do not create a working directory')), |
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68 (b'B', b'bookmarks', None, _(b'also share bookmarks')), |
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69 (b'', b'relative', None, _(b'point to source using a relative path'),), |
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70 ], |
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71 _(b'[-U] [-B] SOURCE [DEST]'), |
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72 helpcategory=command.CATEGORY_REPO_CREATION, |
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73 norepo=True, |
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74 ) |
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75 def share( |
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76 ui, source, dest=None, noupdate=False, bookmarks=False, relative=False |
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77 ): |
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78 """create a new shared repository |
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79 |
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80 Initialize a new repository and working directory that shares its |
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81 history (and optionally bookmarks) with another repository. |
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82 |
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84 |
12389 | 85 using rollback or extensions that destroy/modify history (mq, |
86 rebase, etc.) can cause considerable confusion with shared | |
87 clones. In particular, if two shared clones are both updated to | |
88 the same changeset, and one of them destroys that changeset | |
89 with rollback, the other clone will suddenly stop working: all | |
90 operations will fail with "abort: working directory has unknown | |
91 parent". The only known workaround is to use debugsetparents on | |
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92 the broken clone to reset it to a changeset that still exists. |
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93 """ |
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94 |
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95 hg.share( |
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96 ui, |
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97 source, |
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98 dest=dest, |
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99 update=not noupdate, |
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100 bookmarks=bookmarks, |
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101 relative=relative, |
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102 ) |
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103 return 0 |
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104 |
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105 |
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106 @command(b'unshare', [], b'', helpcategory=command.CATEGORY_MAINTENANCE) |
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107 def unshare(ui, repo): |
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108 """convert a shared repository to a normal one |
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109 |
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110 Copy the store data to the repo and remove the sharedpath data. |
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111 """ |
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112 |
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113 if not repo.shared(): |
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114 raise error.Abort(_(b"this is not a shared repo")) |
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115 |
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116 hg.unshare(ui, repo) |
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117 |
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118 |
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119 # Wrap clone command to pass auto share options. |
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120 def clone(orig, ui, source, *args, **opts): |
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121 pool = ui.config(b'share', b'pool') |
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122 if pool: |
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123 pool = util.expandpath(pool) |
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124 |
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125 opts['shareopts'] = { |
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126 b'pool': pool, |
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127 b'mode': ui.config(b'share', b'poolnaming'), |
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128 } |
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129 |
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130 return orig(ui, source, *args, **opts) |
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131 |
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132 |
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133 def extsetup(ui): |
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134 extensions.wrapfunction(bookmarks, b'_getbkfile', getbkfile) |
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135 extensions.wrapfunction(bookmarks.bmstore, b'_recordchange', recordchange) |
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136 extensions.wrapfunction(bookmarks.bmstore, b'_writerepo', writerepo) |
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137 extensions.wrapcommand(commands.table, b'clone', clone) |
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138 |
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139 |
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140 def _hassharedbookmarks(repo): |
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141 """Returns whether this repo has shared bookmarks""" |
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142 if bookmarks.bookmarksinstore(repo): |
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143 # Kind of a lie, but it means that we skip our custom reads and writes |
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144 # from/to the source repo. |
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145 return False |
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146 try: |
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147 shared = repo.vfs.read(b'shared').splitlines() |
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148 except IOError as inst: |
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149 if inst.errno != errno.ENOENT: |
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150 raise |
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151 return False |
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152 return hg.sharedbookmarks in shared |
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153 |
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154 |
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155 def getbkfile(orig, repo): |
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156 if _hassharedbookmarks(repo): |
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157 srcrepo = hg.sharedreposource(repo) |
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158 if srcrepo is not None: |
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159 # just orig(srcrepo) doesn't work as expected, because |
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160 # HG_PENDING refers repo.root. |
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161 try: |
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162 fp, pending = txnutil.trypending( |
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163 repo.root, repo.vfs, b'bookmarks' |
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164 ) |
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165 if pending: |
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166 # only in this case, bookmark information in repo |
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167 # is up-to-date. |
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168 return fp |
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169 fp.close() |
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170 except IOError as inst: |
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171 if inst.errno != errno.ENOENT: |
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172 raise |
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173 |
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174 # otherwise, we should read bookmarks from srcrepo, |
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175 # because .hg/bookmarks in srcrepo might be already |
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176 # changed via another sharing repo |
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177 repo = srcrepo |
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178 |
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179 # TODO: Pending changes in repo are still invisible in |
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180 # srcrepo, because bookmarks.pending is written only into repo. |
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181 # See also https://www.mercurial-scm.org/wiki/SharedRepository |
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182 return orig(repo) |
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183 |
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184 |
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185 def recordchange(orig, self, tr): |
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186 # Continue with write to local bookmarks file as usual |
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187 orig(self, tr) |
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188 |
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189 if _hassharedbookmarks(self._repo): |
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190 srcrepo = hg.sharedreposource(self._repo) |
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191 if srcrepo is not None: |
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192 category = b'share-bookmarks' |
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193 tr.addpostclose(category, lambda tr: self._writerepo(srcrepo)) |
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194 |
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195 |
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196 def writerepo(orig, self, repo): |
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197 # First write local bookmarks file in case we ever unshare |
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198 orig(self, repo) |
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199 |
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200 if _hassharedbookmarks(self._repo): |
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201 srcrepo = hg.sharedreposource(self._repo) |
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202 if srcrepo is not None: |
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203 orig(self, srcrepo) |