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annotate obsolete.py @ 44:b243c10a5fbe

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Add pushkey support for pull and push
author Pierre-Yves David <pierre-yves.david@logilab.fr>
date Thu, 08 Sep 2011 12:01:38 +0200
parents 20fca307d9f0
children 3b0364fc822f
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1 # obsolete.py - introduce the obsolete concept in mercurial.
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2 #
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3 # Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
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4 # Logilab SA <contact@logilab.fr>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 from mercurial import util
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10 from mercurial import context
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11 from mercurial import revset
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12 from mercurial import scmutil
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13 from mercurial import extensions
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14 from mercurial import pushkey
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15 from mercurial.node import hex, bin
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16
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17 # Patch changectx
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18 #############################
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19
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20 def obsolete(ctx):
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21 """is the changeset obsolete by other"""
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22 if ctx.node()is None:
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23 return False
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24 return bool(ctx._repo.obsoletedby(ctx.node()))
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25
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26 context.changectx.obsolete = obsolete
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27
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28 ohidden = context.changectx.hidden
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29 def hidden(ctx):
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30 # hack to fill hiddenrevs
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31 # compute hidden (XXX should move elsewhere)
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32 if not getattr(ctx._repo.changelog, 'hiddeninit', False):
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33 basicquery = 'obsolete() - (ancestors(not obsolete() or . or bookmark()))'
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34 for rev in scmutil.revrange(ctx._repo, [basicquery]):
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35 ctx._repo.changelog.hiddenrevs.add(rev)
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36 ctx._repo.changelog.hiddeninit = True
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37
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38 return ohidden(ctx)
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39 context.changectx.hidden = hidden
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41 # revset
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42 #############################
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43
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44 def revsetobsolete(repo, subset, x):
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45 args = revset.getargs(x, 0, 0, 'publicheads takes no arguments')
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46 return [r for r in subset if repo[r].obsolete()] # XXX slow
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47
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48 def extsetup(ui):
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49 revset.symbols["obsolete"] = revsetobsolete
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50 try:
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51 rebase = extensions.find('rebase')
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52 if rebase:
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53 extensions.wrapfunction(rebase, 'concludenode', concludenode)
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54 except KeyError:
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55 pass # rebase not found
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56
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57 # Pushkey mechanism for mutable
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58 #########################################
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59
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60 def pushobsolete(repo, key, old, relations):
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61 assert key == "relations"
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62 w = repo.wlock()
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63 try:
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64 for sub, objs in relations.iteritems():
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65 for obj in objs:
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66 repo.addobsolete(sub, obj)
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67 finally:
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68 w.release()
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69
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70 def listobsolete(repo):
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71 return {'relations': repo._obssubrels}
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72
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73 pushkey.register('obsolete', pushobsolete, listobsolete)
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74
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75 # New commands
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76 #############################
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77
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78
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79 def cmddebugobsolete(ui, repo, subject, object):
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80 """Add an obsolete relation between a too node
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81
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82 The subject is expected to be a newer version of the object"""
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83 sub = repo[subject]
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84 obj = repo[object]
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85 repo.addobsolete(sub.node(), obj.node())
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86 return 0
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87
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88 cmdtable = {'debugobsolete': (cmddebugobsolete, [], '<subject> <object>')}
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89
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90 def reposetup(ui, repo):
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91
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92 opull = repo.pull
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93 opush = repo.push
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94
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95 class obsoletingrepo(repo.__class__):
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96
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97
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98 ### Hidden revision support
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99 @util.propertycache
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100 def hiddenrevs(self):
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101 # It's a property because It simpler that to handle the __init__
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102 revs = set()
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103 return revs
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104
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105 ### obsolete storage
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106 @util.propertycache
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107 def _obsobjrels(self):
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108 """{<old-node> -> set(<new-node>)}
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109
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110 also compute hidden revision"""
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111 #reverse sub -> objs mapping
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112 objrels = {}
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113 for sub, objs in self._obssubrels.iteritems():
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114 for obj in objs:
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115 objrels.setdefault(obj, set()).add(sub)
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116 return objrels
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117
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118 @util.propertycache
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119 def _obssubrels(self):
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120 """{<new-node> -> set(<old-node>)}"""
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121 return self._readobsrels()
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122
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123
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124 ### Disk IO
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125 def _readobsrels(self):
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126 """Write obsolete relation on disk"""
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127 # XXX handle lock
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128 rels = {}
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129 try:
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130 f = self.opener('obsolete-relations')
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131 try:
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132 for line in f:
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133 subhex, objhex = line.split()
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134 rels.setdefault(bin(subhex), set()).add(bin(objhex))
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135 finally:
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136 f.close()
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137 except IOError:
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138 pass
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139 return rels
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140
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141 def _writeobsrels(self):
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142 """Write obsolete relation on disk"""
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143 # XXX handle lock
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144 f = self.opener('obsolete-relations', 'w', atomictemp=True)
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145 try:
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146 for sub, objs in self._obssubrels.iteritems():
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147 for obj in objs:
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148 f.write('%s %s\n' % (hex(sub), hex(obj)))
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149 f.rename()
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150 finally:
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151 f.close()
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152
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153 ### pull // push support
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154
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155 def pull(self, remote, *args, **kwargs):
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156 obskey = remote.listkeys('obsolete')
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157 obsrels = obskey.get('relations', {})
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158 result = opull(remote, *args, **kwargs)
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159 for sub, objs in obsrels.iteritems():
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160 for obj in objs:
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161 self.addobsolete(sub, obj)
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162 return result
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163
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164 def push(self, remote, *args, **opts):
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165 obskey = remote.listkeys('obsolete')
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166 obssupport = 'relations' in obskey
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167 result = opush(remote, *args, **opts)
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168 if obssupport:
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169 remote.pushkey('obsolete', 'relations', {}, self._obssubrels)
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170 return result
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171
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172
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173 ### Public method
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174 def obsoletedby(self, node):
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175 """return the set of node that make <node> obsolete (obj)"""
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176 return self._obsobjrels.get(node, set())
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177
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178 def obsolete(self, node):
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179 """return the set of node that <node> make obsolete (sub)"""
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180 return self._obssubrels.get(node, set())
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181
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182 def addobsolete(self, sub, obj):
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183 """Add a relation marking that node <sub> is a new version of <obj>"""
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184 self._obssubrels.setdefault(sub, set()).add(obj)
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185 self._obsobjrels.setdefault(obj, set()).add(sub)
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186 self.changelog.hiddenrevs.add(repo[obj].rev())
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187 self._writeobsrels()
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188
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189 repo.__class__ = obsoletingrepo
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190
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191
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192 ### Other Extension compat
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193 ############################
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194
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195 def concludenode(orig, repo, rev, *args, **kwargs):
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196 newrev = orig(repo, rev, *args, **kwargs)
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197 oldnode = repo[rev].node()
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198 newnode = repo[newrev].node()
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199 repo.addobsolete(newnode, oldnode)
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200 return newrev
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201