Mercurial > hg
annotate mercurial/filemerge.py @ 20629:277dc5f27310
cmdserver: recreate mq object on runcommand in case queue path was changed
repo.mq needs to be recreated after queue path change. Since there is little
benefit to keep invalidated mq object, it always delete repo.mq.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Mon, 03 Mar 2014 19:41:30 +0900 |
parents | c58b6ab4c26f |
children | 89b2336e5ccf |
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1 # filemerge.py - file-level merge handling for Mercurial |
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2 # |
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3 # Copyright 2006, 2007, 2008 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from node import short |
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9 from i18n import _ |
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10 import util, simplemerge, match, error |
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11 import os, tempfile, re, filecmp |
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12 |
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13 def _toolstr(ui, tool, part, default=""): |
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14 return ui.config("merge-tools", tool + "." + part, default) |
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15 |
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16 def _toolbool(ui, tool, part, default=False): |
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17 return ui.configbool("merge-tools", tool + "." + part, default) |
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18 |
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19 def _toollist(ui, tool, part, default=[]): |
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20 return ui.configlist("merge-tools", tool + "." + part, default) |
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21 |
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22 internals = {} |
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23 |
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24 def internaltool(name, trymerge, onfailure=None): |
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25 '''return a decorator for populating internal merge tool table''' |
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26 def decorator(func): |
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27 fullname = 'internal:' + name |
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28 func.__doc__ = "``%s``\n" % fullname + func.__doc__.strip() |
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29 internals[fullname] = func |
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30 func.trymerge = trymerge |
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31 func.onfailure = onfailure |
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32 return func |
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33 return decorator |
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34 |
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35 def _findtool(ui, tool): |
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36 if tool in internals: |
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37 return tool |
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38 for kn in ("regkey", "regkeyalt"): |
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39 k = _toolstr(ui, tool, kn) |
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40 if not k: |
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41 continue |
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42 p = util.lookupreg(k, _toolstr(ui, tool, "regname")) |
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43 if p: |
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44 p = util.findexe(p + _toolstr(ui, tool, "regappend")) |
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45 if p: |
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46 return p |
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47 exe = _toolstr(ui, tool, "executable", tool) |
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48 return util.findexe(util.expandpath(exe)) |
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49 |
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50 def _picktool(repo, ui, path, binary, symlink): |
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51 def check(tool, pat, symlink, binary): |
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52 tmsg = tool |
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53 if pat: |
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54 tmsg += " specified for " + pat |
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55 if not _findtool(ui, tool): |
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56 if pat: # explicitly requested tool deserves a warning |
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57 ui.warn(_("couldn't find merge tool %s\n") % tmsg) |
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58 else: # configured but non-existing tools are more silent |
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59 ui.note(_("couldn't find merge tool %s\n") % tmsg) |
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60 elif symlink and not _toolbool(ui, tool, "symlink"): |
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61 ui.warn(_("tool %s can't handle symlinks\n") % tmsg) |
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62 elif binary and not _toolbool(ui, tool, "binary"): |
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63 ui.warn(_("tool %s can't handle binary\n") % tmsg) |
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64 elif not util.gui() and _toolbool(ui, tool, "gui"): |
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65 ui.warn(_("tool %s requires a GUI\n") % tmsg) |
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66 else: |
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67 return True |
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68 return False |
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69 |
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70 # forcemerge comes from command line arguments, highest priority |
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71 force = ui.config('ui', 'forcemerge') |
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72 if force: |
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73 toolpath = _findtool(ui, force) |
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74 if toolpath: |
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75 return (force, util.shellquote(toolpath)) |
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76 else: |
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77 # mimic HGMERGE if given tool not found |
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78 return (force, force) |
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79 |
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80 # HGMERGE takes next precedence |
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81 hgmerge = os.environ.get("HGMERGE") |
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82 if hgmerge: |
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83 return (hgmerge, hgmerge) |
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84 |
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85 # then patterns |
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86 for pat, tool in ui.configitems("merge-patterns"): |
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87 mf = match.match(repo.root, '', [pat]) |
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88 if mf(path) and check(tool, pat, symlink, False): |
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89 toolpath = _findtool(ui, tool) |
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90 return (tool, util.shellquote(toolpath)) |
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91 |
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92 # then merge tools |
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93 tools = {} |
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94 for k, v in ui.configitems("merge-tools"): |
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95 t = k.split('.')[0] |
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96 if t not in tools: |
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97 tools[t] = int(_toolstr(ui, t, "priority", "0")) |
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98 names = tools.keys() |
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99 tools = sorted([(-p, t) for t, p in tools.items()]) |
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100 uimerge = ui.config("ui", "merge") |
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101 if uimerge: |
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102 if uimerge not in names: |
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103 return (uimerge, uimerge) |
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104 tools.insert(0, (None, uimerge)) # highest priority |
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105 tools.append((None, "hgmerge")) # the old default, if found |
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106 for p, t in tools: |
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107 if check(t, None, symlink, binary): |
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108 toolpath = _findtool(ui, t) |
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109 return (t, util.shellquote(toolpath)) |
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110 |
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111 # internal merge or prompt as last resort |
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112 if symlink or binary: |
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113 return "internal:prompt", None |
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114 return "internal:merge", None |
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115 |
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116 def _eoltype(data): |
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117 "Guess the EOL type of a file" |
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118 if '\0' in data: # binary |
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119 return None |
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120 if '\r\n' in data: # Windows |
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121 return '\r\n' |
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122 if '\r' in data: # Old Mac |
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123 return '\r' |
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124 if '\n' in data: # UNIX |
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125 return '\n' |
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126 return None # unknown |
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127 |
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128 def _matcheol(file, origfile): |
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129 "Convert EOL markers in a file to match origfile" |
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130 tostyle = _eoltype(util.readfile(origfile)) |
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131 if tostyle: |
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132 data = util.readfile(file) |
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133 style = _eoltype(data) |
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134 if style: |
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135 newdata = data.replace(style, tostyle) |
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136 if newdata != data: |
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137 util.writefile(file, newdata) |
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138 |
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139 @internaltool('prompt', False) |
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140 def _iprompt(repo, mynode, orig, fcd, fco, fca, toolconf): |
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141 """Asks the user which of the local or the other version to keep as |
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142 the merged version.""" |
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143 ui = repo.ui |
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144 fd = fcd.path() |
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145 |
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146 if ui.promptchoice(_(" no tool found to merge %s\n" |
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147 "keep (l)ocal or take (o)ther?" |
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148 "$$ &Local $$ &Other") % fd, 0): |
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149 return _iother(repo, mynode, orig, fcd, fco, fca, toolconf) |
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150 else: |
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151 return _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf) |
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152 |
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153 @internaltool('local', False) |
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154 def _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf): |
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155 """Uses the local version of files as the merged version.""" |
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156 return 0 |
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157 |
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158 @internaltool('other', False) |
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159 def _iother(repo, mynode, orig, fcd, fco, fca, toolconf): |
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160 """Uses the other version of files as the merged version.""" |
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161 repo.wwrite(fcd.path(), fco.data(), fco.flags()) |
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162 return 0 |
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163 |
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164 @internaltool('fail', False) |
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165 def _ifail(repo, mynode, orig, fcd, fco, fca, toolconf): |
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166 """ |
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167 Rather than attempting to merge files that were modified on both |
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168 branches, it marks them as unresolved. The resolve command must be |
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169 used to resolve these conflicts.""" |
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170 return 1 |
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171 |
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172 def _premerge(repo, toolconf, files): |
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173 tool, toolpath, binary, symlink = toolconf |
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174 if symlink: |
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175 return 1 |
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176 a, b, c, back = files |
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177 |
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178 ui = repo.ui |
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179 |
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180 # do we attempt to simplemerge first? |
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181 try: |
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182 premerge = _toolbool(ui, tool, "premerge", not binary) |
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183 except error.ConfigError: |
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184 premerge = _toolstr(ui, tool, "premerge").lower() |
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185 valid = 'keep'.split() |
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186 if premerge not in valid: |
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187 _valid = ', '.join(["'" + v + "'" for v in valid]) |
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188 raise error.ConfigError(_("%s.premerge not valid " |
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189 "('%s' is neither boolean nor %s)") % |
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190 (tool, premerge, _valid)) |
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191 |
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192 if premerge: |
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193 r = simplemerge.simplemerge(ui, a, b, c, quiet=True) |
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194 if not r: |
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195 ui.debug(" premerge successful\n") |
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196 return 0 |
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197 if premerge != 'keep': |
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198 util.copyfile(back, a) # restore from backup and try again |
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199 return 1 # continue merging |
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200 |
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201 @internaltool('merge', True, |
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202 _("merging %s incomplete! " |
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203 "(edit conflicts, then use 'hg resolve --mark')\n")) |
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204 def _imerge(repo, mynode, orig, fcd, fco, fca, toolconf, files): |
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205 """ |
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206 Uses the internal non-interactive simple merge algorithm for merging |
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207 files. It will fail if there are any conflicts and leave markers in |
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208 the partially merged file.""" |
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209 tool, toolpath, binary, symlink = toolconf |
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210 if symlink: |
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211 repo.ui.warn(_('warning: internal:merge cannot merge symlinks ' |
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212 'for %s\n') % fcd.path()) |
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213 return False, 1 |
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214 |
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215 r = _premerge(repo, toolconf, files) |
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216 if r: |
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217 a, b, c, back = files |
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218 |
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219 ui = repo.ui |
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220 |
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221 r = simplemerge.simplemerge(ui, a, b, c, label=['local', 'other']) |
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222 return True, r |
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223 return False, 0 |
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224 |
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225 @internaltool('dump', True) |
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226 def _idump(repo, mynode, orig, fcd, fco, fca, toolconf, files): |
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227 """ |
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228 Creates three versions of the files to merge, containing the |
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229 contents of local, other and base. These files can then be used to |
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230 perform a merge manually. If the file to be merged is named |
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231 ``a.txt``, these files will accordingly be named ``a.txt.local``, |
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232 ``a.txt.other`` and ``a.txt.base`` and they will be placed in the |
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233 same directory as ``a.txt``.""" |
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234 r = _premerge(repo, toolconf, files) |
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235 if r: |
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236 a, b, c, back = files |
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237 |
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238 fd = fcd.path() |
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239 |
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240 util.copyfile(a, a + ".local") |
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241 repo.wwrite(fd + ".other", fco.data(), fco.flags()) |
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242 repo.wwrite(fd + ".base", fca.data(), fca.flags()) |
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243 return False, r |
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244 |
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245 def _xmerge(repo, mynode, orig, fcd, fco, fca, toolconf, files): |
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246 r = _premerge(repo, toolconf, files) |
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247 if r: |
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248 tool, toolpath, binary, symlink = toolconf |
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249 a, b, c, back = files |
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250 out = "" |
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251 env = dict(HG_FILE=fcd.path(), |
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252 HG_MY_NODE=short(mynode), |
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253 HG_OTHER_NODE=str(fco.changectx()), |
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254 HG_BASE_NODE=str(fca.changectx()), |
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255 HG_MY_ISLINK='l' in fcd.flags(), |
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256 HG_OTHER_ISLINK='l' in fco.flags(), |
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257 HG_BASE_ISLINK='l' in fca.flags()) |
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258 |
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259 ui = repo.ui |
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260 |
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261 args = _toolstr(ui, tool, "args", '$local $base $other') |
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262 if "$output" in args: |
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263 out, a = a, back # read input from backup, write to original |
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264 replace = dict(local=a, base=b, other=c, output=out) |
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265 args = util.interpolate(r'\$', replace, args, |
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266 lambda s: util.shellquote(util.localpath(s))) |
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267 r = util.system(toolpath + ' ' + args, cwd=repo.root, environ=env, |
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268 out=ui.fout) |
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269 return True, r |
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270 return False, 0 |
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271 |
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272 def filemerge(repo, mynode, orig, fcd, fco, fca): |
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273 """perform a 3-way merge in the working directory |
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274 |
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275 mynode = parent node before merge |
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276 orig = original local filename before merge |
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277 fco = other file context |
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278 fca = ancestor file context |
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279 fcd = local file context for current/destination file |
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280 """ |
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281 |
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282 def temp(prefix, ctx): |
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283 pre = "%s~%s." % (os.path.basename(ctx.path()), prefix) |
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284 (fd, name) = tempfile.mkstemp(prefix=pre) |
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285 data = repo.wwritedata(ctx.path(), ctx.data()) |
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286 f = os.fdopen(fd, "wb") |
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287 f.write(data) |
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288 f.close() |
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289 return name |
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290 |
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291 if not fco.cmp(fcd): # files identical? |
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292 return None |
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293 |
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294 ui = repo.ui |
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295 fd = fcd.path() |
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296 binary = fcd.isbinary() or fco.isbinary() or fca.isbinary() |
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297 symlink = 'l' in fcd.flags() + fco.flags() |
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298 tool, toolpath = _picktool(repo, ui, fd, binary, symlink) |
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299 ui.debug("picked tool '%s' for %s (binary %s symlink %s)\n" % |
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300 (tool, fd, binary, symlink)) |
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301 |
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302 if tool in internals: |
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303 func = internals[tool] |
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304 trymerge = func.trymerge |
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305 onfailure = func.onfailure |
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306 else: |
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307 func = _xmerge |
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308 trymerge = True |
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309 onfailure = _("merging %s failed!\n") |
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310 |
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311 toolconf = tool, toolpath, binary, symlink |
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312 |
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313 if not trymerge: |
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314 return func(repo, mynode, orig, fcd, fco, fca, toolconf) |
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315 |
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316 a = repo.wjoin(fd) |
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317 b = temp("base", fca) |
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318 c = temp("other", fco) |
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319 back = a + ".orig" |
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320 util.copyfile(a, back) |
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321 |
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322 if orig != fco.path(): |
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323 ui.status(_("merging %s and %s to %s\n") % (orig, fco.path(), fd)) |
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324 else: |
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325 ui.status(_("merging %s\n") % fd) |
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326 |
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327 ui.debug("my %s other %s ancestor %s\n" % (fcd, fco, fca)) |
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328 |
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329 needcheck, r = func(repo, mynode, orig, fcd, fco, fca, toolconf, |
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330 (a, b, c, back)) |
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331 if not needcheck: |
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332 if r: |
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333 if onfailure: |
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334 ui.warn(onfailure % fd) |
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335 else: |
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336 os.unlink(back) |
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337 |
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338 os.unlink(b) |
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339 os.unlink(c) |
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340 return r |
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341 |
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342 if not r and (_toolbool(ui, tool, "checkconflicts") or |
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343 'conflicts' in _toollist(ui, tool, "check")): |
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344 if re.search("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data(), |
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345 re.MULTILINE): |
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346 r = 1 |
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347 |
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348 checked = False |
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349 if 'prompt' in _toollist(ui, tool, "check"): |
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350 checked = True |
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351 if ui.promptchoice(_("was merge of '%s' successful (yn)?" |
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352 "$$ &Yes $$ &No") % fd, 1): |
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353 r = 1 |
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354 |
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355 if not r and not checked and (_toolbool(ui, tool, "checkchanged") or |
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356 'changed' in _toollist(ui, tool, "check")): |
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357 if filecmp.cmp(a, back): |
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358 if ui.promptchoice(_(" output file %s appears unchanged\n" |
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359 "was merge successful (yn)?" |
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360 "$$ &Yes $$ &No") % fd, 1): |
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361 r = 1 |
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362 |
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363 if _toolbool(ui, tool, "fixeol"): |
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364 _matcheol(a, back) |
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365 |
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366 if r: |
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367 if onfailure: |
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368 ui.warn(onfailure % fd) |
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369 else: |
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370 os.unlink(back) |
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371 |
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372 os.unlink(b) |
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373 os.unlink(c) |
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374 return r |
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375 |
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376 # tell hggettext to extract docstrings from these functions: |
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377 i18nfunctions = internals.values() |