Mercurial > hg > mercurial-crew-with-dirclash

annotate hgext/extdiff.py @ 3736:ad3d5b4367cb

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make manifest friendlier switch to using context code ..which uses first parent by default show file hashes only with debug switch show permissions with verbose fix up tests
author Matt Mackall <mpm@selenic.com>
date Thu, 30 Nov 2006 22:38:48 -0600
parents 67f44b825784
children abaee83ce0a6 18dcc22666a0
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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
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6 # of the GNU General Public License, incorporated herein by reference.
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7 #
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8 # The `extdiff' Mercurial extension allows you to use external programs
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9 # to compare revisions, or revision with working dir. The external diff
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10 # programs are called with a configurable set of options and two
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11 # non-option arguments: paths to directories containing snapshots of
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12 # files to compare.
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13 #
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14 # To enable this extension:
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15 #
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16 # [extensions]
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17 # hgext.extdiff =
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18 #
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19 # The `extdiff' extension also allows to configure new diff commands, so
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20 # you do not need to type "hg extdiff -p kdiff3" always.
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21 #
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22 # [extdiff]
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23 # # add new command that runs GNU diff(1) in 'context diff' mode
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24 # cmd.cdiff = gdiff
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25 # opts.cdiff = -Nprc5
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27 # # add new command called vdiff, runs kdiff3
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28 # cmd.vdiff = kdiff3
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30 # # add new command called meld, runs meld (no need to name twice)
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31 # cmd.meld =
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32
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33 # # add new command called vimdiff, runs gvimdiff with DirDiff plugin
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34 # #(see http://www.vim.org/scripts/script.php?script_id=102)
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35 # # Non english user, be sure to put "let g:DirDiffDynamicDiffText = 1" in
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36 # # your .vimrc
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37 # cmd.vimdiff = gvim
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38 # opts.vimdiff = -f '+next' '+execute "DirDiff" argv(0) argv(1)'
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39 #
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40 # Each custom diff commands can have two parts: a `cmd' and an `opts'
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41 # part. The cmd.xxx option defines the name of an executable program
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42 # that will be run, and opts.xxx defines a set of command-line options
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43 # which will be inserted to the command between the program name and
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44 # the files/directories to diff (i.e. the cdiff example above).
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45 #
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46 # You can use -I/-X and list of file or directory names like normal
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47 # "hg diff" command. The `extdiff' extension makes snapshots of only
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48 # needed files, so running the external diff program will actually be
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49 # pretty fast (at least faster than having to compare the entire tree).
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50
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51 from mercurial.demandload import demandload
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52 from mercurial.i18n import gettext as _
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53 from mercurial.node import *
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54 demandload(globals(), 'mercurial:cmdutil,util os shutil tempfile')
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55
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56 def dodiff(ui, repo, diffcmd, diffopts, pats, opts):
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57 def snapshot_node(files, node):
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58 '''snapshot files as of some revision'''
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59 changes = repo.changelog.read(node)
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60 mf = repo.manifest.read(changes[0])
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61 dirname = '%s.%s' % (os.path.basename(repo.root), short(node))
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62 base = os.path.join(tmproot, dirname)
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63 os.mkdir(base)
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64 if not ui.quiet:
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65 ui.write_err(_('making snapshot of %d files from rev %s\n') %
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66 (len(files), short(node)))
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67 for fn in files:
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68 if not fn in mf:
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69 # skipping new file after a merge ?
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70 continue
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71 wfn = util.pconvert(fn)
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72 ui.note(' %s\n' % wfn)
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73 dest = os.path.join(base, wfn)
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74 destdir = os.path.dirname(dest)
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75 if not os.path.isdir(destdir):
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76 os.makedirs(destdir)
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77 repo.wwrite(wfn, repo.file(fn).read(mf[fn]), open(dest, 'w'))
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78 return dirname
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79
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80 def snapshot_wdir(files):
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81 '''snapshot files from working directory.
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82 if not using snapshot, -I/-X does not work and recursive diff
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83 in tools like kdiff3 and meld displays too many files.'''
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84 dirname = os.path.basename(repo.root)
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85 base = os.path.join(tmproot, dirname)
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86 os.mkdir(base)
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87 if not ui.quiet:
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88 ui.write_err(_('making snapshot of %d files from working dir\n') %
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89 (len(files)))
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90 for fn in files:
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91 wfn = util.pconvert(fn)
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92 ui.note(' %s\n' % wfn)
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93 dest = os.path.join(base, wfn)
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94 destdir = os.path.dirname(dest)
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95 if not os.path.isdir(destdir):
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96 os.makedirs(destdir)
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97 fp = open(dest, 'w')
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98 for chunk in util.filechunkiter(repo.wopener(wfn)):
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99 fp.write(chunk)
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100 return dirname
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101
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102 node1, node2 = cmdutil.revpair(repo, opts['rev'])
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103 files, matchfn, anypats = cmdutil.matchpats(repo, pats, opts)
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104 modified, added, removed, deleted, unknown = repo.status(
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105 node1, node2, files, match=matchfn)[:5]
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106 if not (modified or added or removed):
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107 return 0
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108
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109 tmproot = tempfile.mkdtemp(prefix='extdiff.')
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110 try:
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111 dir1 = snapshot_node(modified + removed, node1)
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112 if node2:
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113 dir2 = snapshot_node(modified + added, node2)
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114 else:
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115 dir2 = snapshot_wdir(modified + added)
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116 cmdline = ('%s %s %s %s' %
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117 (util.shellquote(diffcmd), ' '.join(diffopts),
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118 util.shellquote(dir1), util.shellquote(dir2)))
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119 ui.debug('running %r in %s\n' % (cmdline, tmproot))
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120 util.system(cmdline, cwd=tmproot)
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121 return 1
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122 finally:
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123 ui.note(_('cleaning up temp directory\n'))
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124 shutil.rmtree(tmproot)
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125
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126 def extdiff(ui, repo, *pats, **opts):
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127 '''use external program to diff repository (or selected files)
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128
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129 Show differences between revisions for the specified files, using
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130 an external program. The default program used is diff, with
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131 default options "-Npru".
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132
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133 To select a different program, use the -p option. The program
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134 will be passed the names of two directories to compare. To pass
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135 additional options to the program, use the -o option. These will
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136 be passed before the names of the directories to compare.
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137
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138 When two revision arguments are given, then changes are
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139 shown between those revisions. If only one revision is
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140 specified then that revision is compared to the working
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141 directory, and, when no revisions are specified, the
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142 working directory files are compared to its parent.'''
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143 program = opts['program'] or 'diff'
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144 if opts['program']:
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145 option = opts['option']
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146 else:
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147 option = opts['option'] or ['-Npru']
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148 return dodiff(ui, repo, program, option, pats, opts)
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149
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150 cmdtable = {
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151 "extdiff":
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152 (extdiff,
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153 [('p', 'program', '', _('comparison program to run')),
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154 ('o', 'option', [], _('pass option to comparison program')),
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155 ('r', 'rev', [], _('revision')),
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156 ('I', 'include', [], _('include names matching the given patterns')),
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157 ('X', 'exclude', [], _('exclude names matching the given patterns'))],
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158 _('hg extdiff [OPT]... [FILE]...')),
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159 }
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160
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161 def uisetup(ui):
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162 for cmd, path in ui.configitems('extdiff'):
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163 if not cmd.startswith('cmd.'): continue
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164 cmd = cmd[4:]
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165 if not path: path = cmd
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166 diffopts = ui.config('extdiff', 'opts.' + cmd, '')
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167 diffopts = diffopts and [diffopts] or []
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168 def save(cmd, path, diffopts):
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169 '''use closure to save diff command to use'''
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170 def mydiff(ui, repo, *pats, **opts):
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171 return dodiff(ui, repo, path, diffopts, pats, opts)
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172 mydiff.__doc__ = '''use %(path)r to diff repository (or selected files)
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173
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174 Show differences between revisions for the specified
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175 files, using the %(path)r program.
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176
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177 When two revision arguments are given, then changes are
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178 shown between those revisions. If only one revision is
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179 specified then that revision is compared to the working
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180 directory, and, when no revisions are specified, the
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181 working directory files are compared to its parent.''' % {
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182 'path': path,
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183 }
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184 return mydiff
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185 cmdtable[cmd] = (save(cmd, path, diffopts),
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186 cmdtable['extdiff'][1][1:],
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187 _('hg %s [OPT]... [FILE]...') % cmd)