Mercurial > hg
annotate hgext/extdiff.py @ 28359:f6b5b041c6c9
commit: block amend while histedit is in progress (issue4800)
author | timeless <timeless@mozdev.org> |
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date | Sun, 14 Feb 2016 07:35:50 +0000 |
parents | 174069440929 |
children | 4f86c3bed63b |
rev | line source |
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1 # extdiff.py - external diff program support for mercurial |
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2 # |
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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7 |
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8 '''command to allow external programs to compare revisions |
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9 |
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10 The extdiff Mercurial extension allows you to use external programs |
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11 to compare revisions, or revision with working directory. The external |
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12 diff programs are called with a configurable set of options and two |
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13 non-option arguments: paths to directories containing snapshots of |
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14 files to compare. |
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15 |
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16 The extdiff extension also allows you to configure new diff commands, so |
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17 you do not need to type :hg:`extdiff -p kdiff3` always. :: |
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18 |
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19 [extdiff] |
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20 # add new command that runs GNU diff(1) in 'context diff' mode |
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21 cdiff = gdiff -Nprc5 |
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22 ## or the old way: |
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23 #cmd.cdiff = gdiff |
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24 #opts.cdiff = -Nprc5 |
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25 |
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26 # add new command called meld, runs meld (no need to name twice). If |
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27 # the meld executable is not available, the meld tool in [merge-tools] |
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28 # will be used, if available |
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29 meld = |
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30 |
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31 # add new command called vimdiff, runs gvimdiff with DirDiff plugin |
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32 # (see http://www.vim.org/scripts/script.php?script_id=102) Non |
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33 # English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in |
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34 # your .vimrc |
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35 vimdiff = gvim -f "+next" \\ |
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36 "+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))" |
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37 |
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38 Tool arguments can include variables that are expanded at runtime:: |
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39 |
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40 $parent1, $plabel1 - filename, descriptive label of first parent |
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41 $child, $clabel - filename, descriptive label of child revision |
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42 $parent2, $plabel2 - filename, descriptive label of second parent |
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43 $root - repository root |
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44 $parent is an alias for $parent1. |
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45 |
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46 The extdiff extension will look in your [diff-tools] and [merge-tools] |
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47 sections for diff tool arguments, when none are specified in [extdiff]. |
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48 |
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49 :: |
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50 |
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51 [extdiff] |
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52 kdiff3 = |
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53 |
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54 [diff-tools] |
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55 kdiff3.diffargs=--L1 '$plabel1' --L2 '$clabel' $parent $child |
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56 |
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57 You can use -I/-X and list of file or directory names like normal |
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58 :hg:`diff` command. The extdiff extension makes snapshots of only |
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59 needed files, so running the external diff program will actually be |
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60 pretty fast (at least faster than having to compare the entire tree). |
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61 ''' |
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62 |
3891 | 63 from mercurial.i18n import _ |
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64 from mercurial.node import short, nullid |
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65 from mercurial import cmdutil, scmutil, util, commands, encoding, filemerge |
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66 from mercurial import archival, error |
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67 import os, shlex, shutil, tempfile, re |
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68 |
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69 cmdtable = {} |
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70 command = cmdutil.command(cmdtable) |
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71 # Note for extension authors: ONLY specify testedwith = 'internal' for |
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72 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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73 # be specifying the version(s) of Mercurial they are tested with, or |
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74 # leave the attribute unspecified. |
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75 testedwith = 'internal' |
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76 |
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77 def snapshot(ui, repo, files, node, tmproot, listsubrepos): |
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78 '''snapshot files as of some revision |
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79 if not using snapshot, -I/-X does not work and recursive diff |
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80 in tools like kdiff3 and meld displays too many files.''' |
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81 dirname = os.path.basename(repo.root) |
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82 if dirname == "": |
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83 dirname = "root" |
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84 if node is not None: |
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85 dirname = '%s.%s' % (dirname, short(node)) |
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86 base = os.path.join(tmproot, dirname) |
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87 os.mkdir(base) |
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88 fns_and_mtime = [] |
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89 |
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90 if node is not None: |
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91 ui.note(_('making snapshot of %d files from rev %s\n') % |
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92 (len(files), short(node))) |
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93 else: |
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95 (len(files))) |
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96 |
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97 if files: |
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98 repo.ui.setconfig("ui", "archivemeta", False) |
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99 |
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100 archival.archive(repo, base, node, 'files', |
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101 matchfn=scmutil.matchfiles(repo, files), |
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102 subrepos=listsubrepos) |
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103 |
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104 for fn in sorted(files): |
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105 wfn = util.pconvert(fn) |
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106 ui.note(' %s\n' % wfn) |
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107 |
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108 if node is None: |
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109 dest = os.path.join(base, wfn) |
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110 |
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111 fns_and_mtime.append((dest, repo.wjoin(fn), |
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112 os.lstat(dest).st_mtime)) |
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113 return dirname, fns_and_mtime |
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114 |
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115 def dodiff(ui, repo, cmdline, pats, opts): |
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116 '''Do the actual diff: |
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117 |
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118 - copy to a temp structure if diffing 2 internal revisions |
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119 - copy to a temp structure if diffing working revision with |
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120 another one and more than 1 file is changed |
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121 - just invoke the diff for a single file in the working dir |
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122 ''' |
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123 |
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124 revs = opts.get('rev') |
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125 change = opts.get('change') |
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126 do3way = '$parent2' in cmdline |
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127 |
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128 if revs and change: |
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129 msg = _('cannot specify --rev and --change at the same time') |
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130 raise error.Abort(msg) |
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131 elif change: |
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132 node2 = scmutil.revsingle(repo, change, None).node() |
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133 node1a, node1b = repo.changelog.parents(node2) |
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134 else: |
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135 node1a, node2 = scmutil.revpair(repo, revs) |
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136 if not revs: |
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137 node1b = repo.dirstate.p2() |
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138 else: |
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139 node1b = nullid |
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140 |
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141 # Disable 3-way merge if there is only one parent |
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142 if do3way: |
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143 if node1b == nullid: |
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144 do3way = False |
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145 |
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146 subrepos=opts.get('subrepos') |
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147 |
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148 matcher = scmutil.match(repo[node2], pats, opts) |
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149 |
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150 if opts.get('patch'): |
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151 if subrepos: |
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152 raise error.Abort(_('--patch cannot be used with --subrepos')) |
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153 if node2 is None: |
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154 raise error.Abort(_('--patch requires two revisions')) |
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155 else: |
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156 mod_a, add_a, rem_a = map(set, repo.status(node1a, node2, matcher, |
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157 listsubrepos=subrepos)[:3]) |
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158 if do3way: |
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159 mod_b, add_b, rem_b = map(set, |
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160 repo.status(node1b, node2, matcher, |
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161 listsubrepos=subrepos)[:3]) |
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162 else: |
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163 mod_b, add_b, rem_b = set(), set(), set() |
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164 modadd = mod_a | add_a | mod_b | add_b |
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165 common = modadd | rem_a | rem_b |
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166 if not common: |
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167 return 0 |
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168 |
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169 tmproot = tempfile.mkdtemp(prefix='extdiff.') |
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170 try: |
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171 if not opts.get('patch'): |
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172 # Always make a copy of node1a (and node1b, if applicable) |
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173 dir1a_files = mod_a | rem_a | ((mod_b | add_b) - add_a) |
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174 dir1a = snapshot(ui, repo, dir1a_files, node1a, tmproot, |
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175 subrepos)[0] |
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176 rev1a = '@%d' % repo[node1a].rev() |
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177 if do3way: |
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178 dir1b_files = mod_b | rem_b | ((mod_a | add_a) - add_b) |
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179 dir1b = snapshot(ui, repo, dir1b_files, node1b, tmproot, |
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180 subrepos)[0] |
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181 rev1b = '@%d' % repo[node1b].rev() |
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182 else: |
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183 dir1b = None |
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184 rev1b = '' |
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185 |
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186 fns_and_mtime = [] |
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187 |
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188 # If node2 in not the wc or there is >1 change, copy it |
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189 dir2root = '' |
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190 rev2 = '' |
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191 if node2: |
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192 dir2 = snapshot(ui, repo, modadd, node2, tmproot, subrepos)[0] |
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193 rev2 = '@%d' % repo[node2].rev() |
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194 elif len(common) > 1: |
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195 #we only actually need to get the files to copy back to |
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196 #the working dir in this case (because the other cases |
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197 #are: diffing 2 revisions or single file -- in which case |
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198 #the file is already directly passed to the diff tool). |
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199 dir2, fns_and_mtime = snapshot(ui, repo, modadd, None, tmproot, |
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200 subrepos) |
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201 else: |
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202 # This lets the diff tool open the changed file directly |
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203 dir2 = '' |
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204 dir2root = repo.root |
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205 |
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206 label1a = rev1a |
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207 label1b = rev1b |
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208 label2 = rev2 |
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209 |
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210 # If only one change, diff the files instead of the directories |
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211 # Handle bogus modifies correctly by checking if the files exist |
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212 if len(common) == 1: |
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213 common_file = util.localpath(common.pop()) |
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214 dir1a = os.path.join(tmproot, dir1a, common_file) |
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215 label1a = common_file + rev1a |
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216 if not os.path.isfile(dir1a): |
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217 dir1a = os.devnull |
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218 if do3way: |
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219 dir1b = os.path.join(tmproot, dir1b, common_file) |
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220 label1b = common_file + rev1b |
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221 if not os.path.isfile(dir1b): |
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222 dir1b = os.devnull |
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223 dir2 = os.path.join(dir2root, dir2, common_file) |
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224 label2 = common_file + rev2 |
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225 else: |
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226 template = 'hg-%h.patch' |
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227 cmdutil.export(repo, [repo[node1a].rev(), repo[node2].rev()], |
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228 template=repo.vfs.reljoin(tmproot, template), |
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229 match=matcher) |
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230 label1a = cmdutil.makefilename(repo, template, node1a) |
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231 label2 = cmdutil.makefilename(repo, template, node2) |
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232 dir1a = repo.vfs.reljoin(tmproot, label1a) |
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233 dir2 = repo.vfs.reljoin(tmproot, label2) |
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234 dir1b = None |
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235 label1b = None |
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236 fns_and_mtime = [] |
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237 |
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238 # Function to quote file/dir names in the argument string. |
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239 # When not operating in 3-way mode, an empty string is |
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240 # returned for parent2 |
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241 replace = {'parent': dir1a, 'parent1': dir1a, 'parent2': dir1b, |
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242 'plabel1': label1a, 'plabel2': label1b, |
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243 'clabel': label2, 'child': dir2, |
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244 'root': repo.root} |
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245 def quote(match): |
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246 pre = match.group(2) |
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247 key = match.group(3) |
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248 if not do3way and key == 'parent2': |
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249 return pre |
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250 return pre + util.shellquote(replace[key]) |
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251 |
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252 # Match parent2 first, so 'parent1?' will match both parent1 and parent |
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253 regex = (r'''(['"]?)([^\s'"$]*)''' |
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254 r'\$(parent2|parent1?|child|plabel1|plabel2|clabel|root)\1') |
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255 if not do3way and not re.search(regex, cmdline): |
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256 cmdline += ' $parent1 $child' |
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257 cmdline = re.sub(regex, quote, cmdline) |
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258 |
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259 ui.debug('running %r in %s\n' % (cmdline, tmproot)) |
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260 ui.system(cmdline, cwd=tmproot) |
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261 |
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262 for copy_fn, working_fn, mtime in fns_and_mtime: |
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263 if os.lstat(copy_fn).st_mtime != mtime: |
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264 ui.debug('file changed while diffing. ' |
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265 'Overwriting: %s (src: %s)\n' % (working_fn, copy_fn)) |
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266 util.copyfile(copy_fn, working_fn) |
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267 |
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268 return 1 |
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269 finally: |
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270 ui.note(_('cleaning up temp directory\n')) |
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271 shutil.rmtree(tmproot) |
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272 |
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273 extdiffopts = [ |
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274 ('o', 'option', [], |
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275 _('pass option to comparison program'), _('OPT')), |
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276 ('r', 'rev', [], _('revision'), _('REV')), |
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277 ('c', 'change', '', _('change made by revision'), _('REV')), |
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278 ('', 'patch', None, _('compare patches for two revisions')) |
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279 ] + commands.walkopts + commands.subrepoopts |
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280 |
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281 @command('extdiff', |
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282 [('p', 'program', '', _('comparison program to run'), _('CMD')), |
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283 ] + extdiffopts, |
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284 _('hg extdiff [OPT]... [FILE]...'), |
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285 inferrepo=True) |
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286 def extdiff(ui, repo, *pats, **opts): |
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287 '''use external program to diff repository (or selected files) |
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288 |
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289 Show differences between revisions for the specified files, using |
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290 an external program. The default program used is diff, with |
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291 default options "-Npru". |
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292 |
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293 To select a different program, use the -p/--program option. The |
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294 program will be passed the names of two directories to compare. To |
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295 pass additional options to the program, use -o/--option. These |
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296 will be passed before the names of the directories to compare. |
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297 |
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298 When two revision arguments are given, then changes are shown |
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299 between those revisions. If only one revision is specified then |
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300 that revision is compared to the working directory, and, when no |
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301 revisions are specified, the working directory files are compared |
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302 to its parent.''' |
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303 program = opts.get('program') |
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304 option = opts.get('option') |
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305 if not program: |
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306 program = 'diff' |
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307 option = option or ['-Npru'] |
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308 cmdline = ' '.join(map(util.shellquote, [program] + option)) |
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309 return dodiff(ui, repo, cmdline, pats, opts) |
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310 |
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311 def uisetup(ui): |
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312 for cmd, path in ui.configitems('extdiff'): |
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313 path = util.expandpath(path) |
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314 if cmd.startswith('cmd.'): |
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315 cmd = cmd[4:] |
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316 if not path: |
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317 path = util.findexe(cmd) |
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318 if path is None: |
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319 path = filemerge.findexternaltool(ui, cmd) or cmd |
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320 diffopts = ui.config('extdiff', 'opts.' + cmd, '') |
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321 cmdline = util.shellquote(path) |
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322 if diffopts: |
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323 cmdline += ' ' + diffopts |
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324 elif cmd.startswith('opts.'): |
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325 continue |
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326 else: |
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327 if path: |
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328 # case "cmd = path opts" |
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329 cmdline = path |
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330 diffopts = len(shlex.split(cmdline)) > 1 |
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331 else: |
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332 # case "cmd =" |
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333 path = util.findexe(cmd) |
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334 if path is None: |
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335 path = filemerge.findexternaltool(ui, cmd) or cmd |
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336 cmdline = util.shellquote(path) |
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337 diffopts = False |
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338 # look for diff arguments in [diff-tools] then [merge-tools] |
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339 if not diffopts: |
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340 args = ui.config('diff-tools', cmd+'.diffargs') or \ |
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341 ui.config('merge-tools', cmd+'.diffargs') |
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342 if args: |
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343 cmdline += ' ' + args |
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344 def save(cmdline): |
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345 '''use closure to save diff command to use''' |
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346 def mydiff(ui, repo, *pats, **opts): |
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347 options = ' '.join(map(util.shellquote, opts['option'])) |
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348 if options: |
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349 options = ' ' + options |
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350 return dodiff(ui, repo, cmdline + options, pats, opts) |
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351 doc = _('''\ |
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352 use %(path)s to diff repository (or selected files) |
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353 |
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354 Show differences between revisions for the specified files, using |
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355 the %(path)s program. |
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356 |
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357 When two revision arguments are given, then changes are shown |
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358 between those revisions. If only one revision is specified then |
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359 that revision is compared to the working directory, and, when no |
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360 revisions are specified, the working directory files are compared |
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361 to its parent.\ |
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362 ''') % {'path': util.uirepr(path)} |
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363 |
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364 # We must translate the docstring right away since it is |
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365 # used as a format string. The string will unfortunately |
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366 # be translated again in commands.helpcmd and this will |
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367 # fail when the docstring contains non-ASCII characters. |
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368 # Decoding the string to a Unicode string here (using the |
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369 # right encoding) prevents that. |
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370 mydiff.__doc__ = doc.decode(encoding.encoding) |
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371 return mydiff |
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372 command(cmd, extdiffopts[:], _('hg %s [OPTION]... [FILE]...') % cmd, |
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373 inferrepo=True)(save(cmdline)) |