Mercurial > hg
annotate mercurial/destutil.py @ 46604:ad107ed7a4aa
ci: test real dependency installation for pip
In the past, the pip smoke test inhibited actual dependency
installation, but that fails in different environments for setuptools
itself. Since it isn't what we actually want to test (which is pip
install), allow this to call home, if HGTESTS_ALLOW_NETIO=1 is set
in the environment.
Differential Revision: https://phab.mercurial-scm.org/D9950
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Thu, 04 Feb 2021 23:23:35 +0100 |
parents | c7abdbc8fd47 |
children | d4ba4d51f85f |
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.ConfigError( |
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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) |