Mercurial > hg
annotate tests/test-fncache.t @ 25652:2882d6886919
repair: add functionality to rebuild fncache
Currently, there is no way to recover from a missing or corrupt fncache
file in place (a clone is required). For certain use cases such as
servers and with large repositories, an in-place repair may be
desirable. This patch adds functionality for in-place repair of the
fncache.
The `hg debugrebuildfncache` command is introduced. It ensures the
fncache is up to date by reconstructing the fncache from all seen files
encountered during a brute force traversal of the repository's entire
history.
The command will add missing entries and will prune excess ones.
Currently, the command no-ops unless the repository has the fncache
requirement. The command could later grow the ability to "upgrade" an
existing repository to be fncache enabled, if desired.
When testing this patch on a local clone of the Firefox repository, it
removed a bunch of entries. Investigation revealed that removed entries
belonged to empty (0 byte size) .i filelogs. The functionality for
pruning fncache of stripped revlogs was introduced in f49d60fa40a5, so
the presence of these entries likely predates this feature.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 22 Jun 2015 09:59:48 -0700 |
parents | 9573d8f346f1 |
children | 9d1e04f5dca7 |
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1 Init repo1: |
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3 $ hg init repo1 |
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4 $ cd repo1 |
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5 $ echo "some text" > a |
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6 $ hg add |
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7 adding a |
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8 $ hg ci -m first |
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9 $ cat .hg/store/fncache | sort |
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10 data/a.i |
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12 Testing a.i/b: |
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14 $ mkdir a.i |
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15 $ echo "some other text" > a.i/b |
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16 $ hg add |
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17 adding a.i/b (glob) |
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18 $ hg ci -m second |
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19 $ cat .hg/store/fncache | sort |
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20 data/a.i |
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21 data/a.i.hg/b.i |
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23 Testing a.i.hg/c: |
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25 $ mkdir a.i.hg |
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26 $ echo "yet another text" > a.i.hg/c |
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27 $ hg add |
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28 adding a.i.hg/c (glob) |
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29 $ hg ci -m third |
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30 $ cat .hg/store/fncache | sort |
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31 data/a.i |
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32 data/a.i.hg.hg/c.i |
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33 data/a.i.hg/b.i |
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35 Testing verify: |
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36 |
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37 $ hg verify |
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38 checking changesets |
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39 checking manifests |
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40 crosschecking files in changesets and manifests |
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41 checking files |
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42 3 files, 3 changesets, 3 total revisions |
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43 |
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44 $ rm .hg/store/fncache |
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46 $ hg verify |
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47 checking changesets |
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48 checking manifests |
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49 crosschecking files in changesets and manifests |
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50 checking files |
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51 warning: revlog 'data/a.i' not in fncache! |
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52 warning: revlog 'data/a.i.hg/c.i' not in fncache! |
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53 warning: revlog 'data/a.i/b.i' not in fncache! |
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54 3 files, 3 changesets, 3 total revisions |
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55 3 warnings encountered! |
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56 $ cd .. |
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58 Non store repo: |
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60 $ hg --config format.usestore=False init foo |
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61 $ cd foo |
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62 $ mkdir tst.d |
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63 $ echo foo > tst.d/foo |
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64 $ hg ci -Amfoo |
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65 adding tst.d/foo |
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66 $ find .hg | sort |
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67 .hg |
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68 .hg/00changelog.i |
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69 .hg/00manifest.i |
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70 .hg/cache |
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71 .hg/cache/branch2-served |
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72 .hg/cache/rbc-names-v1 |
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73 .hg/cache/rbc-revs-v1 |
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74 .hg/data |
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75 .hg/data/tst.d.hg |
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76 .hg/data/tst.d.hg/foo.i |
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77 .hg/dirstate |
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78 .hg/last-message.txt |
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79 .hg/phaseroots |
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80 .hg/requires |
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81 .hg/undo |
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82 .hg/undo.backupfiles |
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83 .hg/undo.bookmarks |
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84 .hg/undo.branch |
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85 .hg/undo.desc |
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86 .hg/undo.dirstate |
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87 .hg/undo.phaseroots |
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88 $ cd .. |
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89 |
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90 Non fncache repo: |
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91 |
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92 $ hg --config format.usefncache=False init bar |
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93 $ cd bar |
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94 $ mkdir tst.d |
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95 $ echo foo > tst.d/Foo |
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96 $ hg ci -Amfoo |
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97 adding tst.d/Foo |
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98 $ find .hg | sort |
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99 .hg |
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100 .hg/00changelog.i |
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101 .hg/cache |
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102 .hg/cache/branch2-served |
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103 .hg/cache/rbc-names-v1 |
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104 .hg/cache/rbc-revs-v1 |
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105 .hg/dirstate |
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106 .hg/last-message.txt |
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107 .hg/requires |
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108 .hg/store |
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109 .hg/store/00changelog.i |
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110 .hg/store/00manifest.i |
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111 .hg/store/data |
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112 .hg/store/data/tst.d.hg |
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113 .hg/store/data/tst.d.hg/_foo.i |
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114 .hg/store/phaseroots |
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115 .hg/store/undo |
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116 .hg/store/undo.backupfiles |
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117 .hg/store/undo.phaseroots |
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118 .hg/undo.bookmarks |
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119 .hg/undo.branch |
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120 .hg/undo.desc |
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121 .hg/undo.dirstate |
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122 $ cd .. |
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123 |
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124 Encoding of reserved / long paths in the store |
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125 |
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126 $ hg init r2 |
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127 $ cd r2 |
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128 $ cat <<EOF > .hg/hgrc |
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129 > [ui] |
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130 > portablefilenames = ignore |
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131 > EOF |
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132 |
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133 $ hg import -q --bypass - <<EOF |
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134 > # HG changeset patch |
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135 > # User test |
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136 > # Date 0 0 |
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137 > # Node ID 1c7a2f7cb77be1a0def34e4c7cabc562ad98fbd7 |
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138 > # Parent 0000000000000000000000000000000000000000 |
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139 > 1 |
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140 > |
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141 > diff --git a/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz |
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142 > new file mode 100644 |
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143 > --- /dev/null |
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144 > +++ b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz |
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145 > @@ -0,0 +1,1 @@ |
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146 > +foo |
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147 > diff --git a/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT |
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148 > new file mode 100644 |
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149 > --- /dev/null |
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150 > +++ b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT |
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151 > @@ -0,0 +1,1 @@ |
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152 > +foo |
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153 > diff --git a/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt |
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154 > new file mode 100644 |
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155 > --- /dev/null |
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156 > +++ b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt |
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157 > @@ -0,0 +1,1 @@ |
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158 > +foo |
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159 > diff --git a/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c |
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160 > new file mode 100644 |
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161 > --- /dev/null |
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162 > +++ b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c |
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163 > @@ -0,0 +1,1 @@ |
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164 > +foo |
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165 > diff --git a/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider |
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166 > new file mode 100644 |
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167 > --- /dev/null |
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168 > +++ b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider |
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169 > @@ -0,0 +1,1 @@ |
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170 > +foo |
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171 > EOF |
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172 |
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173 $ find .hg/store -name *.i | sort |
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174 .hg/store/00changelog.i |
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175 .hg/store/00manifest.i |
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176 .hg/store/data/bla.aux/pr~6e/_p_r_n/lpt/co~6d3/nu~6c/coma/foo._n_u_l/normal.c.i |
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177 .hg/store/dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxx168e07b38e65eff86ab579afaaa8e30bfbe0f35f.i |
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178 .hg/store/dh/au~78/second/x.prn/fourth/fi~3afth/sixth/seventh/eighth/nineth/tenth/loremia20419e358ddff1bf8751e38288aff1d7c32ec05.i |
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179 .hg/store/dh/enterpri/openesba/contrib-/corba-bc/netbeans/wsdlexte/src/main/java/org.net7018f27961fdf338a598a40c4683429e7ffb9743.i |
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180 .hg/store/dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilename0d8e1f4187c650e2f1fdca9fd90f786bc0976b6b.i |
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181 |
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182 $ cd .. |
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183 |
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184 Aborting lock does not prevent fncache writes |
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185 |
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186 $ cat > exceptionext.py <<EOF |
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187 > import os |
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188 > from mercurial import commands, util |
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189 > from mercurial.extensions import wrapfunction |
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190 > |
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191 > def lockexception(orig, vfs, lockname, wait, releasefn, acquirefn, desc): |
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192 > def releasewrap(): |
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193 > raise util.Abort("forced lock failure") |
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194 > return orig(vfs, lockname, wait, releasewrap, acquirefn, desc) |
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195 > |
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196 > def reposetup(ui, repo): |
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197 > wrapfunction(repo, '_lock', lockexception) |
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198 > |
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199 > cmdtable = {} |
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200 > |
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201 > EOF |
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202 $ extpath=`pwd`/exceptionext.py |
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203 $ hg init fncachetxn |
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204 $ cd fncachetxn |
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205 $ printf "[extensions]\nexceptionext=$extpath\n" >> .hg/hgrc |
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206 $ touch y |
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207 $ hg ci -qAm y |
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208 abort: forced lock failure |
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209 [255] |
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210 $ cat .hg/store/fncache |
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211 data/y.i |
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212 |
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213 Aborting transaction prevents fncache change |
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214 |
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215 $ cat > ../exceptionext.py <<EOF |
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216 > import os |
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217 > from mercurial import commands, util, localrepo |
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218 > from mercurial.extensions import wrapfunction |
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219 > |
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220 > def wrapper(orig, self, *args, **kwargs): |
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221 > tr = orig(self, *args, **kwargs) |
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222 > def fail(tr): |
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223 > raise util.Abort("forced transaction failure") |
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224 > # zzz prefix to ensure it sorted after store.write |
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225 > tr.addfinalize('zzz-forcefails', fail) |
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226 > return tr |
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227 > |
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228 > def uisetup(ui): |
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229 > wrapfunction(localrepo.localrepository, 'transaction', wrapper) |
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230 > |
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231 > cmdtable = {} |
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232 > |
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233 > EOF |
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234 $ rm -f "${extpath}c" |
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235 $ touch z |
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236 $ hg ci -qAm z |
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237 transaction abort! |
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238 rollback completed |
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239 abort: forced transaction failure |
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240 [255] |
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241 $ cat .hg/store/fncache |
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242 data/y.i |
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243 |
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244 Aborted transactions can be recovered later |
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245 |
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246 $ cat > ../exceptionext.py <<EOF |
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247 > import os |
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248 > from mercurial import commands, util, transaction, localrepo |
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249 > from mercurial.extensions import wrapfunction |
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250 > |
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251 > def trwrapper(orig, self, *args, **kwargs): |
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252 > tr = orig(self, *args, **kwargs) |
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253 > def fail(tr): |
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254 > raise util.Abort("forced transaction failure") |
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255 > # zzz prefix to ensure it sorted after store.write |
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256 > tr.addfinalize('zzz-forcefails', fail) |
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257 > return tr |
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258 > |
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259 > def abortwrapper(orig, self, *args, **kwargs): |
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260 > raise util.Abort("forced transaction failure") |
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261 > |
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262 > def uisetup(ui): |
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263 > wrapfunction(localrepo.localrepository, 'transaction', trwrapper) |
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264 > wrapfunction(transaction.transaction, '_abort', abortwrapper) |
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265 > |
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266 > cmdtable = {} |
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267 > |
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268 > EOF |
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269 $ rm -f "${extpath}c" |
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270 $ hg up -q 1 |
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271 $ touch z |
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272 $ hg ci -qAm z 2>/dev/null |
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273 [255] |
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274 $ cat .hg/store/fncache | sort |
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275 data/y.i |
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276 data/z.i |
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277 $ hg recover |
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278 rolling back interrupted transaction |
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279 checking changesets |
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280 checking manifests |
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281 crosschecking files in changesets and manifests |
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282 checking files |
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283 1 files, 1 changesets, 1 total revisions |
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284 $ cat .hg/store/fncache |
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285 data/y.i |
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286 |
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287 $ cd .. |
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288 |
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289 debugrebuildfncache does nothing unless repo has fncache requirement |
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290 |
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291 $ hg --config format.usefncache=false init nofncache |
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292 $ cd nofncache |
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293 $ hg debugrebuildfncache |
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294 (not rebuilding fncache because repository does not support fncache |
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295 |
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296 $ cd .. |
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297 |
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298 debugrebuildfncache works on empty repository |
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299 |
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300 $ hg init empty |
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301 $ cd empty |
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302 $ hg debugrebuildfncache |
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303 fncache already up to date |
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304 $ cd .. |
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305 |
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306 debugrebuildfncache on an up to date repository no-ops |
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307 |
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308 $ hg init repo |
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309 $ cd repo |
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310 $ echo initial > foo |
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311 $ echo initial > .bar |
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312 $ hg commit -A -m initial |
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313 adding .bar |
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314 adding foo |
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315 |
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316 $ cat .hg/store/fncache | sort |
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317 data/.bar.i |
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318 data/foo.i |
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319 |
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320 $ hg debugrebuildfncache |
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321 fncache already up to date |
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322 |
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323 debugrebuildfncache restores deleted fncache file |
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324 |
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325 $ rm -f .hg/store/fncache |
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326 $ hg debugrebuildfncache |
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327 adding data/.bar.i |
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328 adding data/foo.i |
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329 2 items added, 0 removed from fncache |
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330 |
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331 $ cat .hg/store/fncache | sort |
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332 data/.bar.i |
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333 data/foo.i |
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334 |
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335 Rebuild after rebuild should no-op |
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336 |
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337 $ hg debugrebuildfncache |
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338 fncache already up to date |
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339 |
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340 A single missing file should get restored, an extra file should be removed |
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341 |
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342 $ cat > .hg/store/fncache << EOF |
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343 > data/foo.i |
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344 > data/bad-entry.i |
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345 > EOF |
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346 |
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347 $ hg debugrebuildfncache |
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348 removing data/bad-entry.i |
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349 adding data/.bar.i |
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350 1 items added, 1 removed from fncache |
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351 |
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352 $ cat .hg/store/fncache | sort |
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353 data/.bar.i |
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354 data/foo.i |
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355 |
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356 $ cd .. |
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357 |
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358 Try a simple variation without dotencode to ensure fncache is ignorant of encoding |
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359 |
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360 $ hg --config format.dotencode=false init nodotencode |
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361 $ cd nodotencode |
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362 $ echo initial > foo |
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363 $ echo initial > .bar |
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364 $ hg commit -A -m initial |
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365 adding .bar |
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366 adding foo |
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367 |
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368 $ cat .hg/store/fncache | sort |
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369 data/.bar.i |
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370 data/foo.i |
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371 |
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372 $ rm .hg/store/fncache |
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373 $ hg debugrebuildfncache |
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374 adding data/.bar.i |
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375 adding data/foo.i |
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376 2 items added, 0 removed from fncache |
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377 |
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378 $ cat .hg/store/fncache | sort |
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379 data/.bar.i |
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380 data/foo.i |