Mercurial > hg-onsub

annotate onsub.py @ 12:90b54c4fe4fe

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onsub extension: pre and post order
author jakob krainz <jakob@hawo-net.de>
date Tue, 06 Mar 2012 12:55:40 +0100
parents ecc4fd16555d
children 34aa014b5989
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6
11fd0da50daa Copyright and license header
Martin Geisler <mg@aragost.com>
parents: 4
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1 # onsub.py - execute commands recursively on subrepositories
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2 #
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3 # Copyright 2010, 2011 aragost Trifork
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4 #
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Martin Geisler <mg@aragost.com>
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5 # This software may be used and distributed according to the terms of
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6 # the GNU General Public License version 2 or any later version.
0
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7
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8 import os
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9 from mercurial.i18n import _
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10 from mercurial import extensions, subrepo, util
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11
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12 """execute a command in each subrepository"""
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13
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14 def onsub(ui, repo, *args, **opts):
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15 """execute a command in each subrepository
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16
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17 Executes CMD with the current working directory set to the root of
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18 each subrepository. By default, execution stops if CMD returns a
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19 non-zero exit code. Use --ignore-errors to override this.
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20
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21 Use --verbose/-v to print the command being run and the subrepo
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22 name for each run of CMD in a subrepo. Alternately, use
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23 --print0/-0 to print just the subrepo name followed by a NUL
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24 character instead of a newline. This can be useful in combination
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25 with :hg:`status --print0`.
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26
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27 The command has access to the following environment variables:
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28
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29 ``HG_REPO``:
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30 Absolute path to the top-level repository in which the onsub
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31 command was executed.
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32
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33 ``HG_SUBPATH``:
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34 Relative path to the current subrepository from the top-level
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35 repository.
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36
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37 ``HG_SUBURL``:
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38 URL for the current subrepository as specified in the
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39 containing repository's ``.hgsub`` file.
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40
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41 ``HG_SUBSTATE``:
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42 State of the current subrepository as specified in the
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43 containing repository's ``.hgsubstate`` file.
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44 """
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45 if len(args) == 2:
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46 precmd = args[0]
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47 postcmd = args[1]
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48 if opts.get('breadth_first') or opts.get('post_order'):
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49 raise util.Abort(_("onsub: '-b' and '-p' imply the use of only one command"))
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50 elif len(args) == 1:
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51 if opts.get('post_order'):
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52 precmd = None
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53 postcmd = args[0]
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54 else:
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55 precmd = args[0]
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56 postcmd = None
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57 elif len(args) == 0:
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58 # cmd == '' means only do print0
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59 if opts.get('post_order'):
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60 precmd = None
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61 postcmd = ''
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62 else:
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63 precmd = ''
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64 postcmd = None
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65 else:
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66 raise util.Abort(_("onsub: at most 2 command arguments required"))
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67 if opts.get('post_order') and opts.get('breadth_first'):
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68 raise util.Abort(_("onsub: '-b' and '-p' are mutually exclusive"))
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69 foreach(ui, repo, precmd, postcmd,
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70 not opts.get('breadth_first'),
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71 opts.get('max_depth'),
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72 opts.get('print0'),
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73 opts.get('ignore_errors'),
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74 opts.get('root_repo'))
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75
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76 def execCmd(ui, rootrepo, sub, doaction, print0, cmd, inroot, ignoreerrors):
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77 """ if doaction, execute cmd; else, do nothing. if inroot,
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78 then command is executed inside rootrepo; else, inside sub
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79
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80 If cmd == None, do nothing. If cmd == '', do only the print0 (if needed).
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81 Else, do either print0 or the debugging message, then execute the command.
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82 """
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83 if not doaction:
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84 return
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85 if inroot:
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86 envargdict = dict(HG_SUBPATH='.',
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87 HG_SUBURL='.',
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88 HG_SUBSTATE=rootrepo['.'].hex(),
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89 HG_REPO=rootrepo.root)
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90 relpath = '.'
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91 cmdwd = rootrepo.root
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92 else:
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93 # subrepo.relpath was renamed to subrepo.subrelpath in
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94 # 18b5b6392fcf.
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95 if hasattr(subrepo, 'relpath'):
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96 relpath = subrepo.relpath(sub)
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97 else:
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98 relpath = subrepo.subrelpath(sub)
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99 envargdict = dict(HG_SUBPATH=relpath,
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100 HG_SUBURL=sub._path,
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101 HG_SUBSTATE=sub._state[1],
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102 HG_REPO=rootrepo.root)
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103 cmdwd = os.path.join(rootrepo.root, relpath)
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104 if ignoreerrors:
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105 onerr = None
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106 else:
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107 onerr = util.Abort
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108 if cmd != None:
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109 if print0:
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110 ui.write(relpath, "\0")
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111 if cmd != '':
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112 if not print0: ui.note(_("executing '%s' in %s\n") % (cmd, relpath))
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113 util.system(cmd, environ=envargdict, cwd=cmdwd, onerr=onerr,
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114 errprefix=_('terminated onsub in %s') % relpath)
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115
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116
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117
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118 def foreach(ui, repo, precmd, postcmd, depthfirst, maxdepth, print0, ignoreerrors, includeroot):
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119 """execute (pre/post)cmd in repo.root and in each subrepository"""
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120 seen = set()
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121 execCmd(ui=ui, rootrepo=repo, sub=None, doaction=includeroot,
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122 print0=print0, cmd=precmd, inroot=True, ignoreerrors=ignoreerrors)
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123 ctx = repo['.']
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124 work = [(1, ctx.sub(subpath)) for subpath in sorted(ctx.substate)]
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125 if depthfirst:
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126 work.reverse()
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127 while work:
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128 if depthfirst:
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129 (depth, sub) = work[-1]
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130 if sub in seen:
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131 dopreaction = False
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132 dopostaction = True
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133 doaddchildren = False
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134 work.pop()
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135 else:
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136 dopreaction = True
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137 dopostaction = False
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138 doaddchildren = True
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139 seen.add(sub)
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140 else:
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141 (depth, sub) = work.pop(0)
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142 dopreaction = True
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143 dopostaction = False
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144 doaddchildren = True
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145 if depth > maxdepth >= 0:
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146 continue
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147 execCmd(ui=ui, rootrepo=repo, sub=sub, doaction=dopreaction,
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148 print0=print0, cmd=precmd, inroot=False, ignoreerrors=ignoreerrors)
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149 if doaddchildren:
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150 if isinstance(sub, subrepo.hgsubrepo):
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151 rev = sub._state[1]
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152 ctx = sub._repo[rev]
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153 w = [(depth + 1, ctx.sub(subpath))
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154 for subpath in sorted(ctx.substate)]
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155 if depthfirst:
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156 w.reverse()
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157 work.extend(w)
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158 execCmd(ui=ui, rootrepo=repo, sub=sub, doaction=dopostaction,
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159 print0=print0, cmd=postcmd, inroot=False, ignoreerrors=ignoreerrors)
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160 execCmd(ui=ui, rootrepo=repo, sub=None, doaction=includeroot,
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161 print0=print0, cmd=postcmd, inroot=True, ignoreerrors=ignoreerrors)
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162
0
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163 cmdtable = {
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164 "onsub":
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165 (onsub,
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166 [('b', 'breadth-first', None,
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167 _('use breadth-first traversal')),
12
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168 ('p', 'post-order', None,
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169 _('use post-order depth-first traversal')),
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170 ('', 'root-repo', None,
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171 _('include root repository in traversal')),
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Greg Ward <greg@gerg.ca>
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172 ('', 'max-depth', -1,
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173 _('limit recursion to N levels (negative for no limit)'), 'N'),
3
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174 ('', 'ignore-errors', None,
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175 _('continue execution despite errors')),
0
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176 ('0', 'print0', None,
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177 _('end subrepository names with NUL, for use with xargs'))],
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178 _('[-b] [-0] [--ignore-errors] CMD'))
0
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179 }