Mercurial > hg
annotate mercurial/destutil.py @ 45237:39f4ec4039a8
commitctx: move a special case about files earlier
Same logic as a changeset a bit earlier, the `writefilecopymeta` section is more
a post processing details so we move the conditional about `files` value closer
to the rest of the code computing `files` value.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 23 Jul 2020 23:40:59 +0200 |
parents | 8ff1ecfadcd1 |
children | c7abdbc8fd47 |
rev | line source |
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1 # destutil.py - Mercurial utility function for command destination |
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2 # |
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3 # Copyright Matt Mackall <mpm@selenic.com> and other |
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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 from __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from . import bookmarks, error, obsutil, scmutil, stack |
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12 |
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13 |
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14 def orphanpossibledestination(repo, rev): |
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15 """Return all changesets that may be a new parent for orphan `rev`. |
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16 |
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17 This function works fine on non-orphan revisions, it's just silly |
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18 because there's no destination implied by obsolete markers, so |
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19 it'll return nothing. |
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20 """ |
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21 tonode = repo.changelog.node |
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22 parents = repo.changelog.parentrevs |
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23 torev = repo.changelog.rev |
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24 dest = set() |
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25 tovisit = list(parents(rev)) |
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26 while tovisit: |
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27 r = tovisit.pop() |
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28 succsets = obsutil.successorssets(repo, tonode(r)) |
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29 if not succsets: |
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30 # if there are no successors for r, r was probably pruned |
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31 # and we should walk up to r's parents to try and find |
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32 # some successors. |
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33 tovisit.extend(parents(r)) |
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34 else: |
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35 # We should probably pick only one destination from split |
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36 # (case where '1 < len(ss)'), This could be the currently |
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37 # tipmost, but the correct result is less clear when |
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38 # results of the split have been moved such that they |
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39 # reside on multiple branches. |
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40 for ss in succsets: |
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41 for n in ss: |
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42 dr = torev(n) |
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43 if dr != -1: |
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44 dest.add(dr) |
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45 return dest |
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46 |
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47 |
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48 def _destupdateobs(repo, clean): |
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49 """decide of an update destination from obsolescence markers""" |
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50 node = None |
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51 wc = repo[None] |
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52 p1 = wc.p1() |
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53 movemark = None |
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54 |
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55 if p1.obsolete() and not p1.children(): |
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56 # allow updating to successors |
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57 successors = obsutil.successorssets(repo, p1.node()) |
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58 |
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59 # behavior of certain cases is as follows, |
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60 # |
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61 # divergent changesets: update to highest rev, similar to what |
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62 # is currently done when there are more than one head |
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63 # (i.e. 'tip') |
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64 # |
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65 # replaced changesets: same as divergent except we know there |
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66 # is no conflict |
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67 # |
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68 # pruned changeset: no update is done; though, we could |
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69 # consider updating to the first non-obsolete parent, |
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70 # similar to what is current done for 'hg prune' |
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71 |
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72 if successors: |
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73 # flatten the list here handles both divergent (len > 1) |
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74 # and the usual case (len = 1) |
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75 successors = [n for sub in successors for n in sub] |
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76 |
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77 # get the max revision for the given successors set, |
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78 # i.e. the 'tip' of a set |
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79 node = repo.revs(b'max(%ln)', successors).first() |
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80 if bookmarks.isactivewdirparent(repo): |
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81 movemark = repo[b'.'].node() |
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82 return node, movemark, None |
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83 |
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84 |
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85 def _destupdatebook(repo, clean): |
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86 """decide on an update destination from active bookmark""" |
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87 # we also move the active bookmark, if any |
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88 node = None |
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89 activemark, movemark = bookmarks.calculateupdate(repo.ui, repo) |
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90 if activemark is not None: |
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91 node = repo._bookmarks[activemark] |
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92 return node, movemark, activemark |
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93 |
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94 |
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95 def _destupdatebranch(repo, clean): |
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96 """decide on an update destination from current branch |
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97 |
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98 This ignores closed branch heads. |
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99 """ |
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100 wc = repo[None] |
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101 movemark = node = None |
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102 currentbranch = wc.branch() |
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103 |
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104 if clean: |
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105 currentbranch = repo[b'.'].branch() |
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106 |
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107 if currentbranch in repo.branchmap(): |
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108 heads = repo.branchheads(currentbranch) |
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109 if heads: |
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110 node = repo.revs(b'max(.::(%ln))', heads).first() |
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111 if bookmarks.isactivewdirparent(repo): |
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112 movemark = repo[b'.'].node() |
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113 elif currentbranch == b'default' and not wc.p1(): |
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114 # "null" parent belongs to "default" branch, but it doesn't exist, so |
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115 # update to the tipmost non-closed branch head |
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116 node = repo.revs(b'max(head() and not closed())').first() |
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117 else: |
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118 node = repo[b'.'].node() |
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119 return node, movemark, None |
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120 |
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121 |
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122 def _destupdatebranchfallback(repo, clean): |
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123 """decide on an update destination from closed heads in current branch""" |
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124 wc = repo[None] |
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125 currentbranch = wc.branch() |
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126 movemark = None |
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127 if currentbranch in repo.branchmap(): |
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128 # here, all descendant branch heads are closed |
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129 heads = repo.branchheads(currentbranch, closed=True) |
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130 assert heads, b"any branch has at least one head" |
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131 node = repo.revs(b'max(.::(%ln))', heads).first() |
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132 assert ( |
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133 node is not None |
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134 ), b"any revision has at least one descendant branch head" |
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135 if bookmarks.isactivewdirparent(repo): |
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136 movemark = repo[b'.'].node() |
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137 else: |
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138 # here, no "default" branch, and all branches are closed |
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139 node = repo.lookup(b'tip') |
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140 assert node is not None, b"'tip' exists even in empty repository" |
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141 return node, movemark, None |
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142 |
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143 |
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144 # order in which each step should be evaluated |
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145 # steps are run until one finds a destination |
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146 destupdatesteps = [b'evolution', b'bookmark', b'branch', b'branchfallback'] |
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147 # mapping to ease extension overriding steps. |
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148 destupdatestepmap = { |
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149 b'evolution': _destupdateobs, |
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150 b'bookmark': _destupdatebook, |
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151 b'branch': _destupdatebranch, |
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152 b'branchfallback': _destupdatebranchfallback, |
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153 } |
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154 |
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155 |
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156 def destupdate(repo, clean=False): |
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157 """destination for bare update operation |
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158 |
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159 return (rev, movemark, activemark) |
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160 |
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161 - rev: the revision to update to, |
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162 - movemark: node to move the active bookmark from |
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163 (cf bookmark.calculate update), |
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164 - activemark: a bookmark to activate at the end of the update. |
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165 """ |
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166 node = movemark = activemark = None |
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167 |
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168 for step in destupdatesteps: |
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169 node, movemark, activemark = destupdatestepmap[step](repo, clean) |
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170 if node is not None: |
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171 break |
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172 rev = repo[node].rev() |
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173 |
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174 return rev, movemark, activemark |
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175 |
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176 |
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177 msgdestmerge = { |
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178 # too many matching divergent bookmark |
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179 b'toomanybookmarks': { |
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180 b'merge': ( |
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181 _( |
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182 b"multiple matching bookmarks to merge -" |
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183 b" please merge with an explicit rev or bookmark" |
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184 ), |
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185 _(b"run 'hg heads' to see all heads, specify rev with -r"), |
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186 ), |
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187 b'rebase': ( |
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188 _( |
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189 b"multiple matching bookmarks to rebase -" |
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190 b" please rebase to an explicit rev or bookmark" |
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191 ), |
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192 _(b"run 'hg heads' to see all heads, specify destination with -d"), |
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193 ), |
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194 }, |
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195 # no other matching divergent bookmark |
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196 b'nootherbookmarks': { |
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197 b'merge': ( |
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198 _( |
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199 b"no matching bookmark to merge - " |
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200 b"please merge with an explicit rev or bookmark" |
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201 ), |
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202 _(b"run 'hg heads' to see all heads, specify rev with -r"), |
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203 ), |
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204 b'rebase': ( |
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205 _( |
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206 b"no matching bookmark to rebase - " |
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207 b"please rebase to an explicit rev or bookmark" |
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208 ), |
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209 _(b"run 'hg heads' to see all heads, specify destination with -d"), |
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210 ), |
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211 }, |
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212 # branch have too many unbookmarked heads, no obvious destination |
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213 b'toomanyheads': { |
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214 b'merge': ( |
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215 _(b"branch '%s' has %d heads - please merge with an explicit rev"), |
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216 _(b"run 'hg heads .' to see heads, specify rev with -r"), |
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217 ), |
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218 b'rebase': ( |
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219 _(b"branch '%s' has %d heads - please rebase to an explicit rev"), |
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220 _(b"run 'hg heads .' to see heads, specify destination with -d"), |
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221 ), |
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222 }, |
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223 # branch have no other unbookmarked heads |
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224 b'bookmarkedheads': { |
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225 b'merge': ( |
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226 _(b"heads are bookmarked - please merge with an explicit rev"), |
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227 _(b"run 'hg heads' to see all heads, specify rev with -r"), |
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228 ), |
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229 b'rebase': ( |
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230 _(b"heads are bookmarked - please rebase to an explicit rev"), |
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231 _(b"run 'hg heads' to see all heads, specify destination with -d"), |
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232 ), |
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233 }, |
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234 # branch have just a single heads, but there is other branches |
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235 b'nootherbranchheads': { |
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236 b'merge': ( |
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237 _(b"branch '%s' has one head - please merge with an explicit rev"), |
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238 _(b"run 'hg heads' to see all heads, specify rev with -r"), |
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239 ), |
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240 b'rebase': ( |
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241 _(b"branch '%s' has one head - please rebase to an explicit rev"), |
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242 _(b"run 'hg heads' to see all heads, specify destination with -d"), |
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243 ), |
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244 }, |
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245 # repository have a single head |
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246 b'nootherheads': { |
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247 b'merge': (_(b'nothing to merge'), None), |
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248 b'rebase': (_(b'nothing to rebase'), None), |
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249 }, |
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250 # repository have a single head and we are not on it |
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251 b'nootherheadsbehind': { |
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252 b'merge': (_(b'nothing to merge'), _(b"use 'hg update' instead")), |
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253 b'rebase': (_(b'nothing to rebase'), _(b"use 'hg update' instead")), |
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254 }, |
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255 # We are not on a head |
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256 b'notatheads': { |
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257 b'merge': ( |
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258 _(b'working directory not at a head revision'), |
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259 _(b"use 'hg update' or merge with an explicit revision"), |
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260 ), |
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261 b'rebase': ( |
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262 _(b'working directory not at a head revision'), |
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263 _(b"use 'hg update' or rebase to an explicit revision"), |
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264 ), |
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265 }, |
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266 b'emptysourceset': { |
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267 b'merge': (_(b'source set is empty'), None), |
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268 b'rebase': (_(b'source set is empty'), None), |
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269 }, |
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270 b'multiplebranchessourceset': { |
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271 b'merge': (_(b'source set is rooted in multiple branches'), None), |
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272 b'rebase': ( |
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273 _(b'rebaseset is rooted in multiple named branches'), |
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274 _(b'specify an explicit destination with --dest'), |
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275 ), |
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276 }, |
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277 } |
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278 |
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279 |
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280 def _destmergebook(repo, action=b'merge', sourceset=None, destspace=None): |
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281 """find merge destination in the active bookmark case""" |
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282 node = None |
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283 bmheads = bookmarks.headsforactive(repo) |
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284 curhead = repo._bookmarks[repo._activebookmark] |
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285 if len(bmheads) == 2: |
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286 if curhead == bmheads[0]: |
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287 node = bmheads[1] |
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288 else: |
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289 node = bmheads[0] |
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290 elif len(bmheads) > 2: |
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291 msg, hint = msgdestmerge[b'toomanybookmarks'][action] |
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292 raise error.ManyMergeDestAbort(msg, hint=hint) |
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293 elif len(bmheads) <= 1: |
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294 msg, hint = msgdestmerge[b'nootherbookmarks'][action] |
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295 raise error.NoMergeDestAbort(msg, hint=hint) |
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296 assert node is not None |
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297 return node |
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298 |
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299 |
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300 def _destmergebranch( |
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301 repo, action=b'merge', sourceset=None, onheadcheck=True, destspace=None |
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302 ): |
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303 """find merge destination based on branch heads""" |
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304 node = None |
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305 |
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306 if sourceset is None: |
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307 sourceset = [repo[repo.dirstate.p1()].rev()] |
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308 branch = repo.dirstate.branch() |
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309 elif not sourceset: |
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310 msg, hint = msgdestmerge[b'emptysourceset'][action] |
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311 raise error.NoMergeDestAbort(msg, hint=hint) |
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312 else: |
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313 branch = None |
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314 for ctx in repo.set(b'roots(%ld::%ld)', sourceset, sourceset): |
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315 if branch is not None and ctx.branch() != branch: |
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316 msg, hint = msgdestmerge[b'multiplebranchessourceset'][action] |
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317 raise error.ManyMergeDestAbort(msg, hint=hint) |
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318 branch = ctx.branch() |
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319 |
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320 bheads = repo.branchheads(branch) |
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321 onhead = repo.revs(b'%ld and %ln', sourceset, bheads) |
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322 if onheadcheck and not onhead: |
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323 # Case A: working copy if not on a head. (merge only) |
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324 # |
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325 # This is probably a user mistake We bailout pointing at 'hg update' |
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326 if len(repo.heads()) <= 1: |
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327 msg, hint = msgdestmerge[b'nootherheadsbehind'][action] |
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328 else: |
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329 msg, hint = msgdestmerge[b'notatheads'][action] |
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330 raise error.Abort(msg, hint=hint) |
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331 # remove heads descendants of source from the set |
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332 bheads = list(repo.revs(b'%ln - (%ld::)', bheads, sourceset)) |
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333 # filters out bookmarked heads |
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334 nbhs = list(repo.revs(b'%ld - bookmark()', bheads)) |
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335 |
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336 if destspace is not None: |
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337 # restrict search space |
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338 # used in the 'hg pull --rebase' case, see issue 5214. |
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339 nbhs = list(repo.revs(b'%ld and %ld', destspace, nbhs)) |
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340 |
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341 if len(nbhs) > 1: |
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342 # Case B: There is more than 1 other anonymous heads |
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343 # |
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344 # This means that there will be more than 1 candidate. This is |
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345 # ambiguous. We abort asking the user to pick as explicit destination |
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346 # instead. |
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347 msg, hint = msgdestmerge[b'toomanyheads'][action] |
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348 msg %= (branch, len(bheads) + 1) |
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349 raise error.ManyMergeDestAbort(msg, hint=hint) |
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350 elif not nbhs: |
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351 # Case B: There is no other anonymous heads |
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352 # |
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353 # This means that there is no natural candidate to merge with. |
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354 # We abort, with various messages for various cases. |
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355 if bheads: |
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356 msg, hint = msgdestmerge[b'bookmarkedheads'][action] |
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357 elif len(repo.heads()) > 1: |
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358 msg, hint = msgdestmerge[b'nootherbranchheads'][action] |
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359 msg %= branch |
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360 elif not onhead: |
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361 # if 'onheadcheck == False' (rebase case), |
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362 # this was not caught in Case A. |
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363 msg, hint = msgdestmerge[b'nootherheadsbehind'][action] |
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364 else: |
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365 msg, hint = msgdestmerge[b'nootherheads'][action] |
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366 raise error.NoMergeDestAbort(msg, hint=hint) |
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367 else: |
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368 node = nbhs[0] |
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369 assert node is not None |
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370 return node |
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371 |
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372 |
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373 def destmerge( |
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374 repo, action=b'merge', sourceset=None, onheadcheck=True, destspace=None |
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375 ): |
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376 """return the default destination for a merge |
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377 |
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378 (or raise exception about why it can't pick one) |
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379 |
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380 :action: the action being performed, controls emitted error message |
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381 """ |
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382 # destspace is here to work around issues with `hg pull --rebase` see |
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383 # issue5214 for details |
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384 if repo._activebookmark: |
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385 node = _destmergebook( |
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386 repo, action=action, sourceset=sourceset, destspace=destspace |
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387 ) |
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388 else: |
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389 node = _destmergebranch( |
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390 repo, |
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391 action=action, |
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392 sourceset=sourceset, |
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393 onheadcheck=onheadcheck, |
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394 destspace=destspace, |
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395 ) |
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396 return repo[node].rev() |
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397 |
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398 |
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399 def desthistedit(ui, repo): |
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400 """Default base revision to edit for `hg histedit`.""" |
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401 default = ui.config(b'histedit', b'defaultrev') |
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402 |
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403 if default is None: |
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404 revs = stack.getstack(repo) |
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405 elif default: |
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406 revs = scmutil.revrange(repo, [default]) |
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407 else: |
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408 raise error.Abort( |
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409 _(b"config option histedit.defaultrev can't be empty") |
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410 ) |
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411 |
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412 if revs: |
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413 # Take the first revision of the revset as the root |
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414 return revs.min() |
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415 |
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416 return None |
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417 |
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418 |
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419 def stackbase(ui, repo): |
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420 revs = stack.getstack(repo) |
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421 return revs.first() if revs else None |
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422 |
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423 |
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424 def _statusotherbook(ui, repo): |
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425 bmheads = bookmarks.headsforactive(repo) |
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426 curhead = repo._bookmarks[repo._activebookmark] |
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427 if repo.revs(b'%n and parents()', curhead): |
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428 # we are on the active bookmark |
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429 bmheads = [b for b in bmheads if curhead != b] |
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430 if bmheads: |
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431 msg = _(b'%i other divergent bookmarks for "%s"\n') |
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432 ui.status(msg % (len(bmheads), repo._activebookmark)) |
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433 |
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434 |
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435 def _statusotherbranchheads(ui, repo): |
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436 currentbranch = repo.dirstate.branch() |
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437 allheads = repo.branchheads(currentbranch, closed=True) |
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438 heads = repo.branchheads(currentbranch) |
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439 if repo.revs(b'%ln and parents()', allheads): |
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440 # we are on a head, even though it might be closed |
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441 # |
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442 # on closed otherheads |
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443 # ========= ========== |
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444 # o 0 all heads for current branch are closed |
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445 # N only descendant branch heads are closed |
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446 # x 0 there is only one non-closed branch head |
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447 # N there are some non-closed branch heads |
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448 # ========= ========== |
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449 otherheads = repo.revs(b'%ln - parents()', heads) |
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450 if repo[b'.'].closesbranch(): |
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451 ui.warn( |
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452 _( |
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453 b'no open descendant heads on branch "%s", ' |
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454 b'updating to a closed head\n' |
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455 ) |
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456 % currentbranch |
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457 ) |
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458 if otherheads: |
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459 ui.warn( |
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460 _( |
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461 b"(committing will reopen the head, " |
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462 b"use 'hg heads .' to see %i other heads)\n" |
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463 ) |
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464 % (len(otherheads)) |
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465 ) |
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466 else: |
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467 ui.warn( |
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468 _(b'(committing will reopen branch "%s")\n') % currentbranch |
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469 ) |
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470 elif otherheads: |
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471 curhead = repo[b'.'] |
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472 ui.status( |
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473 _(b'updated to "%s: %s"\n') |
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474 % (curhead, curhead.description().split(b'\n')[0]) |
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475 ) |
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476 ui.status( |
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477 _(b'%i other heads for branch "%s"\n') |
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478 % (len(otherheads), currentbranch) |
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479 ) |
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480 |
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481 |
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482 def statusotherdests(ui, repo): |
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483 """Print message about other head""" |
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484 # XXX we should probably include a hint: |
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485 # - about what to do |
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486 # - how to see such heads |
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487 if repo._activebookmark: |
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488 _statusotherbook(ui, repo) |
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489 else: |
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490 _statusotherbranchheads(ui, repo) |