annotate src/topic/__init__.py @ 1855:f241a00e93a7

topics: only apply topic to commits of the working copy
author Matt Mackall <mpm@selenic.com>
date Fri, 12 Jun 2015 16:49:46 -0500
parents 67950fcf1c69
children 7d7f5f9e2f8c
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1 # __init__.py - topic extension
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5 """support for topic branches
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6
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7 Topic branches are lightweight branches which
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8 disappear when changes are finalized.
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9
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10 This is sort of similar to a bookmark, but it applies to a whole
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11 series instead of a single revision.
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12 """
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13 import functools
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14
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15 from mercurial.i18n import _
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16 from mercurial import cmdutil
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17 from mercurial import commands
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18 from mercurial import context
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19 from mercurial import extensions
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20 from mercurial import namespaces
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21 from mercurial import obsolete
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22 from mercurial import phases
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23 from mercurial import util
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24 from mercurial import merge
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25
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26 from . import constants
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27 from . import revset as topicrevset
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28
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29 cmdtable = {}
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30 command = cmdutil.command(cmdtable)
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31
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32 def _namemap(repo, name):
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33 return [ctx.node() for ctx in
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34 repo.set('not public() and extra(topic, %s)', name)]
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35
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36 def _nodemap(repo, node):
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37 ctx = repo[node]
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38 t = ctx.extra().get(constants.extrakey, '')
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39 if t and ctx.phase() > phases.public:
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40 return [t]
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41 return []
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42
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43 def reposetup(ui, repo):
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44 orig = repo.__class__
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45 class topicrepo(repo.__class__):
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46 def commitctx(self, ctx, error=None):
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47 if isinstance(ctx, context.workingcommitctx):
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48 current = self.currenttopic
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49 if current:
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50 ctx.extra()[constants.extrakey] = current
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51 return orig.commitctx(self, ctx, error=error)
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52
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53 @property
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54 def topics(self):
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55 topics = set(['', self.currenttopic])
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56 for c in self.set('not public()'):
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57 topics.add(c.extra().get(constants.extrakey, ''))
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58 topics.remove('')
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59 return topics
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60
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61 @property
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62 def currenttopic(self):
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63 return self.vfs.tryread('topic')
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64
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65 if util.safehasattr(repo, 'names'):
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66 repo.names.addnamespace(namespaces.namespace(
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67 'topics', 'topic', namemap=_namemap, nodemap=_nodemap))
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68 repo.__class__ = topicrepo
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69
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70 @command('topics [TOPIC]', [
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71 ('', 'clear', False, 'clear active topic if any'),
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72 ('', 'change', '', 'revset of existing revisions to change topic'),
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73 ])
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74 def topics(ui, repo, topic=None, clear=False, change=None):
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75 """View current topic, set current topic, or see all topics."""
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76 if change:
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77 if not obsolete.isenabled(repo, obsolete.createmarkersopt):
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78 raise util.Abort(_('must have obsolete enabled to use --change'))
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79 if topic is None and not clear:
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80 raise util.Abort('changing topic requires a topic name or --clear')
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81 if any(not c.mutable() for c in repo.set('%r and public()', change)):
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82 raise util.Abort("can't change topic of a public change")
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83 rewrote = 0
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84 needevolve = False
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85 for c in repo.set('%r', change):
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86 def filectxfn(repo, ctx, path):
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87 try:
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88 return c[path]
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89 except error.ManifestLookupError:
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90 return None
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91 fixedextra = dict(c.extra())
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92 newtopic = None if clear else topic
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93 if fixedextra.get(constants.extrakey, None) == topic:
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94 continue
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95 if clear and constants.extrakey in fixedextra:
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96 del fixedextra[constants.extrakey]
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97 else:
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98 fixedextra[constants.extrakey] = topic
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99 c.parents()
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100 mc = context.memctx(
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101 repo, (c.p1().node(), c.p2().node()), c.description(),
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102 c.files(), filectxfn,
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103 user=c.user(), date=c.date(), extra=fixedextra)
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104 newnode = repo.commitctx(mc)
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105 needevolve = needevolve or (len(c.children()) > 0)
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106 obsolete.createmarkers(repo, [(c, (repo[newnode],))])
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107 rewrote += 1
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108 ui.status('changed topic on %d changes\n' % rewrote)
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109 if needevolve:
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110 evolvetarget = 'topic(%s)' % topic if topic else 'not topic()'
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111 ui.status('please run hg evolve --rev "%s" now\n' % evolvetarget)
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112 if clear:
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113 if repo.vfs.exists('topic'):
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114 repo.vfs.unlink('topic')
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115 return
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116 if topic is not None:
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117 with repo.vfs.open('topic', 'w') as f:
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118 f.write(topic)
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119 return
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120 current = repo.currenttopic
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121 for t in sorted(repo.topics):
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122 marker = '*' if t == current else ' '
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123 ui.write(' %s %s\n' % (marker, t))
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124
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125 def summaryhook(ui, repo):
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126 t = repo.currenttopic
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127 if not t:
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128 return
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129 # i18n: column positioning for "hg summary"
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130 ui.write(_("topic: %s\n") % t)
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131
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132 def commitwrap(orig, ui, repo, *args, **opts):
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133 if opts.get('topic'):
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134 t = opts['topic']
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135 with repo.vfs.open('topic', 'w') as f:
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136 f.write(t)
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137 return orig(ui, repo, *args, **opts)
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138
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139 def committextwrap(orig, repo, ctx, subs, extramsg):
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140 ret = orig(repo, ctx, subs, extramsg)
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141 t = repo.currenttopic
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142 if t:
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143 ret = ret.replace("\nHG: branch",
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144 "\nHG: topic '%s'\nHG: branch" % t)
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145 return ret
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146
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147 def mergeupdatewrap(orig, repo, node, branchmerge, force, partial,
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148 ancestor=None, mergeancestor=False, labels=None):
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149 wlock = repo.wlock()
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150 try:
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151 ret = orig(repo, node, branchmerge, force, partial, ancestor=ancestor,
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152 mergeancestor=mergeancestor, labels=labels)
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153 if not partial and not branchmerge:
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154 ot = repo.currenttopic
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155 t = ''
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156 pctx = repo[node]
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157 if pctx.phase() > phases.public:
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158 t = pctx.extra().get(constants.extrakey, '')
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159 with repo.vfs.open('topic', 'w') as f:
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160 f.write(t)
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161 if t and t != ot:
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162 repo.ui.status(_("switching to topic %s\n") % t)
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163 return ret
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164 finally:
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165 wlock.release()
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166
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167 def _fixrebase(loaded):
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168 if not loaded:
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169 return
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170
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171 def savetopic(ctx, extra):
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172 e = ctx.extra()
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173 if constants.extrakey in e:
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174 print "copying topic"
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175 extra[constants.extrakey] = e[constants.extrakey]
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176
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177 def newmakeextrafn(orig, copiers):
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178 return orig(copiers + [savetopic])
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179
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180 rebase = extensions.find("rebase")
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181 extensions.wrapfunction(rebase, '_makeextrafn', newmakeextrafn)
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182
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183 extensions.afterloaded('rebase', _fixrebase)
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184
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185 entry = extensions.wrapcommand(commands.table, 'commit', commitwrap)
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186 entry[1].append(('t', 'topic', '',
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187 _("use specified topic"), _('TOPIC')))
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188
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189 extensions.wrapfunction(cmdutil, 'buildcommittext', committextwrap)
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190 extensions.wrapfunction(merge, 'update', mergeupdatewrap)
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191 topicrevset.modsetup()
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192 cmdutil.summaryhooks.add('topic', summaryhook)