annotate hgext/fetch.py @ 46472:98e39f04d60e

upgrade: implement partial upgrade for upgrading persistent-nodemap Upgrading repositories to use persistent nodemap should be fast and easy as it requires only two things: 1) Updating the requirements 2) Writing a persistent-nodemap on disk For both of the steps above, we don't need to edit existing revlogs. This patch makes upgrade only do the above mentioned two steps if we are only upgarding to use persistent-nodemap feature. Since `nodemap.persist_nodemap()` assumes that there exists a nodemap file for the given revlog if we are trying to call it, this patch adds `force` argument to create a file if does not exist which is true in our upgrade case. The test changes demonstrate that we no longer write nodemap files for manifest after upgrade which I think is desirable. Differential Revision: https://phab.mercurial-scm.org/D9936
author Pulkit Goyal <7895pulkit@gmail.com>
date Mon, 01 Feb 2021 00:02:00 +0530
parents 89a2afe31e82
children ffd3e823a7e5
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1 # fetch.py - pull and merge remote changes
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2 #
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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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 '''pull, update and merge in one command (DEPRECATED)'''
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9
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10 from __future__ import absolute_import
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11
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12 from mercurial.i18n import _
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13 from mercurial.node import short
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14 from mercurial import (
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15 cmdutil,
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16 error,
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17 exchange,
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18 hg,
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19 lock,
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20 pycompat,
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21 registrar,
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22 util,
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23 )
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24 from mercurial.utils import dateutil
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25
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26 release = lock.release
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27 cmdtable = {}
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28 command = registrar.command(cmdtable)
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29 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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30 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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31 # be specifying the version(s) of Mercurial they are tested with, or
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32 # leave the attribute unspecified.
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33 testedwith = b'ships-with-hg-core'
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34
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35
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36 @command(
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37 b'fetch',
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38 [
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39 (
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40 b'r',
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41 b'rev',
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42 [],
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43 _(b'a specific revision you would like to pull'),
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44 _(b'REV'),
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45 ),
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46 (b'', b'edit', None, _(b'invoke editor on commit messages')),
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47 (b'', b'force-editor', None, _(b'edit commit message (DEPRECATED)')),
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48 (b'', b'switch-parent', None, _(b'switch parents when merging')),
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49 ]
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50 + cmdutil.commitopts
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51 + cmdutil.commitopts2
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52 + cmdutil.remoteopts,
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53 _(b'hg fetch [SOURCE]'),
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54 helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
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55 )
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56 def fetch(ui, repo, source=b'default', **opts):
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57 """pull changes from a remote repository, merge new changes if needed.
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58
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59 This finds all changes from the repository at the specified path
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60 or URL and adds them to the local repository.
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61
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62 If the pulled changes add a new branch head, the head is
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63 automatically merged, and the result of the merge is committed.
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64 Otherwise, the working directory is updated to include the new
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65 changes.
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66
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67 When a merge is needed, the working directory is first updated to
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68 the newly pulled changes. Local changes are then merged into the
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69 pulled changes. To switch the merge order, use --switch-parent.
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70
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71 See :hg:`help dates` for a list of formats valid for -d/--date.
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72
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73 Returns 0 on success.
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74 """
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75
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76 opts = pycompat.byteskwargs(opts)
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77 date = opts.get(b'date')
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78 if date:
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79 opts[b'date'] = dateutil.parsedate(date)
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80
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81 parent = repo.dirstate.p1()
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82 branch = repo.dirstate.branch()
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83 try:
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84 branchnode = repo.branchtip(branch)
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85 except error.RepoLookupError:
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86 branchnode = None
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87 if parent != branchnode:
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88 raise error.Abort(
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89 _(b'working directory not at branch tip'),
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90 hint=_(b"use 'hg update' to check out branch tip"),
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91 )
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92
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93 wlock = lock = None
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94 try:
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95 wlock = repo.wlock()
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96 lock = repo.lock()
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97
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98 cmdutil.bailifchanged(repo)
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99
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100 bheads = repo.branchheads(branch)
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101 bheads = [head for head in bheads if len(repo[head].children()) == 0]
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102 if len(bheads) > 1:
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103 raise error.Abort(
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104 _(
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105 b'multiple heads in this branch '
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106 b'(use "hg heads ." and "hg merge" to merge)'
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107 )
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108 )
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109
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110 other = hg.peer(repo, opts, ui.expandpath(source))
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111 ui.status(
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112 _(b'pulling from %s\n') % util.hidepassword(ui.expandpath(source))
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113 )
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114 revs = None
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115 if opts[b'rev']:
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116 try:
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117 revs = [other.lookup(rev) for rev in opts[b'rev']]
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118 except error.CapabilityError:
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119 err = _(
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120 b"other repository doesn't support revision lookup, "
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121 b"so a rev cannot be specified."
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122 )
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123 raise error.Abort(err)
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124
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125 # Are there any changes at all?
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126 modheads = exchange.pull(repo, other, heads=revs).cgresult
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127 if modheads == 0:
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128 return 0
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129
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130 # Is this a simple fast-forward along the current branch?
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131 newheads = repo.branchheads(branch)
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132 newchildren = repo.changelog.nodesbetween([parent], newheads)[2]
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133 if len(newheads) == 1 and len(newchildren):
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134 if newchildren[0] != parent:
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135 return hg.update(repo, newchildren[0])
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136 else:
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137 return 0
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138
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139 # Are there more than one additional branch heads?
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140 newchildren = [n for n in newchildren if n != parent]
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141 newparent = parent
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142 if newchildren:
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143 newparent = newchildren[0]
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144 hg.clean(repo, newparent)
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145 newheads = [n for n in newheads if n != newparent]
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146 if len(newheads) > 1:
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147 ui.status(
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148 _(
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149 b'not merging with %d other new branch heads '
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150 b'(use "hg heads ." and "hg merge" to merge them)\n'
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151 )
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152 % (len(newheads) - 1)
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153 )
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154 return 1
7007
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155
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Matt Mackall <mpm@selenic.com>
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156 if not newheads:
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157 return 0
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158
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159 # Otherwise, let's merge.
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160 err = False
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161 if newheads:
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162 # By default, we consider the repository we're pulling
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163 # *from* as authoritative, so we merge our changes into
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164 # theirs.
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165 if opts[b'switch_parent']:
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166 firstparent, secondparent = newparent, newheads[0]
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167 else:
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168 firstparent, secondparent = newheads[0], newparent
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169 ui.status(
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170 _(b'updating to %d:%s\n')
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171 % (repo.changelog.rev(firstparent), short(firstparent))
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172 )
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173 hg.clean(repo, firstparent)
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174 p2ctx = repo[secondparent]
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175 ui.status(
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176 _(b'merging with %d:%s\n') % (p2ctx.rev(), short(secondparent))
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Augie Fackler <augie@google.com>
parents: 41399
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177 )
44434
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Martin von Zweigbergk <martinvonz@google.com>
parents: 43117
diff changeset
178 err = hg.merge(p2ctx, remind=False)
6941
b2bc2d984bac fetch: linearize code by eliminating nested functions
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 6666
diff changeset
179
2800
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
180 if not err:
9183
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Martin Geisler <mg@lazybytes.net>
parents: 8894
diff changeset
181 # we don't translate commit messages
43076
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182 message = cmdutil.logmessage(ui, opts) or (
43077
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parents: 43076
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183 b'Automated merge with %s' % util.removeauth(other.url())
43076
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Augie Fackler <augie@google.com>
parents: 41399
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184 )
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185 editopt = opts.get(b'edit') or opts.get(b'force_editor')
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186 editor = cmdutil.getcommiteditor(edit=editopt, editform=b'fetch')
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Augie Fackler <augie@google.com>
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187 n = repo.commit(
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188 message, opts[b'user'], opts[b'date'], editor=editor
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Augie Fackler <augie@google.com>
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189 )
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190 ui.status(
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Martin von Zweigbergk <martinvonz@google.com>
parents: 43077
diff changeset
191 _(b'new changeset %d:%s merges remote changes with local\n')
43076
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Augie Fackler <augie@google.com>
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192 % (repo.changelog.rev(n), short(n))
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parents: 41399
diff changeset
193 )
6206
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Bryan O'Sullivan <bos@serpentine.com>
parents: 6163
diff changeset
194
12711
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Matt Mackall <mpm@selenic.com>
parents: 11321
diff changeset
195 return err
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Matt Mackall <mpm@selenic.com>
parents: 11321
diff changeset
196
2825
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2824
diff changeset
197 finally:
8112
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Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents: 7991
diff changeset
198 release(lock, wlock)