Mercurial > hg > mercurial-crew-with-dirclash

annotate hgmerge @ 2049:f70952384ae7

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Make completion for debugindex<tab><tab> show debugindexdot, too. The special handling for commands with names that are substrings of other commands (e.g. with st and strip) wasn't used with debug commands before.
author Thomas Arendsen Hein <thomas@intevation.de>
date Wed, 05 Apr 2006 19:07:50 +0200
parents c4d577262d00
children 6a03cff2b0f5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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3d4d5f2aba9a Remove bashisms and use /bin/sh instead of /bin/bash.
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1 #!/bin/sh
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2 #
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3 # hgmerge - default merge helper for Mercurial
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4 #
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5 # This tries to find a way to do three-way merge on the current system.
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6 # The result ought to end up in $1. Script is run in root directory of
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7 # repository.
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8 #
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9 # Environment variables set by Mercurial:
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10 # HG_FILE name of file within repo
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11 # HG_MY_NODE revision being merged
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12 # HG_OTHER_NODE revision being merged
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13
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14 set -e # bail out quickly on failure
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15
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16 LOCAL="$1"
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17 BASE="$2"
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18 OTHER="$3"
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19
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20 if [ -z "$EDITOR" ]; then
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21 EDITOR="vi"
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22 fi
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23
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24 # find decent versions of our utilities, insisting on the GNU versions where we
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25 # need to
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26 MERGE="merge"
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27 DIFF3="gdiff3"
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28 DIFF="gdiff"
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29 PATCH="gpatch"
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31 type "$MERGE" >/dev/null 2>&1 || MERGE=
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32 type "$DIFF3" >/dev/null 2>&1 || DIFF3="diff3"
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33 $DIFF3 --version >/dev/null 2>&1 || DIFF3=
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34 type "$DIFF" >/dev/null 2>&1 || DIFF="diff"
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35 type "$DIFF" >/dev/null 2>&1 || DIFF=
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36 type "$PATCH" >/dev/null 2>&1 || PATCH="patch"
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37 type "$PATCH" >/dev/null 2>&1 || PATCH=
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38
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39 # find optional visual utilities
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40 FILEMERGE="/Developer/Applications/Utilities/FileMerge.app/Contents/MacOS/FileMerge"
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41 KDIFF3="kdiff3"
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42 TKDIFF="tkdiff"
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43 MELD="meld"
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44
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45 type "$FILEMERGE" >/dev/null 2>&1 || FILEMERGE=
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46 type "$KDIFF3" >/dev/null 2>&1 || KDIFF3=
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47 type "$TKDIFF" >/dev/null 2>&1 || TKDIFF=
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48 type "$MELD" >/dev/null 2>&1 || MELD=
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49
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50 # random part of names
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51 RAND="$RANDOM$RANDOM"
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52
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53 # temporary directory for diff+patch merge
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54 HGTMP="${TMPDIR-/tmp}/hgmerge.$RAND"
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55
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56 # backup file
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57 BACKUP="$LOCAL.orig.$RAND"
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58
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59 # file used to test for file change
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60 CHGTEST="$LOCAL.chg.$RAND"
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61
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62 # put all your required cleanup here
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63 cleanup() {
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64 rm -f "$BACKUP" "$CHGTEST"
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65 rm -rf "$HGTMP"
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66 }
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67
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68 # functions concerning program exit
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69 success() {
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70 cleanup
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71 exit 0
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72 }
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73
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74 failure() {
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75 echo "merge failed" 1>&2
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76 mv "$BACKUP" "$LOCAL"
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77 cleanup
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78 exit 1
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79 }
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80
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81 # Ask if the merge was successful
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82 ask_if_merged() {
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83 while true; do
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84 echo "$LOCAL seems unchanged."
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85 echo "Was the merge successful? [y/n]"
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86 read answer
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87 case "$answer" in
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88 y*|Y*) success;;
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89 n*|N*) failure;;
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90 esac
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91 done
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92 }
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93
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94 # Clean up when interrupted
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95 trap "failure" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
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96
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97 # Back up our file (and try hard to keep the mtime unchanged)
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98 mv "$LOCAL" "$BACKUP"
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99 cp "$BACKUP" "$LOCAL"
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100
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101 # Attempt to do a non-interactive merge
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102 if [ -n "$MERGE" -o -n "$DIFF3" ]; then
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103 if [ -n "$MERGE" ]; then
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104 $MERGE "$LOCAL" "$BASE" "$OTHER" 2> /dev/null && success
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105 elif [ -n "$DIFF3" ]; then
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106 $DIFF3 -m "$BACKUP" "$BASE" "$OTHER" > "$LOCAL" && success
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107 fi
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108 if [ $? -gt 1 ]; then
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109 echo "automatic merge failed! Exiting." 1>&2
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110 failure
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111 fi
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112 fi
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113
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114 # on MacOS X try FileMerge.app, shipped with Apple's developer tools
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115 if [ -n "$FILEMERGE" ]; then
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116 cp "$BACKUP" "$LOCAL"
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117 cp "$BACKUP" "$CHGTEST"
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118 # filemerge prefers the right by default
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119 $FILEMERGE -left "$OTHER" -right "$LOCAL" -ancestor "$BASE" -merge "$LOCAL"
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120 [ $? -ne 0 ] && echo "FileMerge failed to launch" && failure
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121 test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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122 fi
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123
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124 if [ -n "$DISPLAY" ]; then
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125 # try using kdiff3, which is fairly nice
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126 if [ -n "$KDIFF3" ]; then
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127 $KDIFF3 --auto "$BASE" "$BACKUP" "$OTHER" -o "$LOCAL" || failure
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128 success
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129 fi
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130
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131 # try using tkdiff, which is a bit less sophisticated
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132 if [ -n "$TKDIFF" ]; then
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133 $TKDIFF "$BACKUP" "$OTHER" -a "$BASE" -o "$LOCAL" || failure
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134 success
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135 fi
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136
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137 if [ -n "$MELD" ]; then
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138 cp "$BACKUP" "$CHGTEST"
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139 # protect our feet - meld allows us to save to the left file
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140 cp "$BACKUP" "$LOCAL.tmp.$RAND"
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141 # Meld doesn't have automatic merging, so to reduce intervention
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142 # use the file with conflicts
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143 $MELD "$LOCAL.tmp.$RAND" "$LOCAL" "$OTHER" || failure
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144 # Also it doesn't return good error code
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145 test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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146 fi
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147 fi
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148
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149 # Attempt to do a merge with $EDITOR
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150 if [ -n "$MERGE" -o -n "$DIFF3" ]; then
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151 echo "conflicts detected in $LOCAL"
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152 cp "$BACKUP" "$CHGTEST"
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153 $EDITOR "$LOCAL" || failure
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154 # Some editors do not return meaningful error codes
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155 # Do not take any chances
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156 test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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157 fi
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158
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159 # attempt to manually merge with diff and patch
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160 if [ -n "$DIFF" -a -n "$PATCH" ]; then
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161
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162 (umask 077 && mkdir "$HGTMP") || {
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163 echo "Could not create temporary directory $HGTMP" 1>&2
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164 failure
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165 }
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166
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167 $DIFF -u "$BASE" "$OTHER" > "$HGTMP/diff" || :
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168 if $PATCH "$LOCAL" < "$HGTMP/diff"; then
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169 success
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170 else
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171 # If rejects are empty after using the editor, merge was ok
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172 $EDITOR "$LOCAL" "$LOCAL.rej" || failure
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173 test -s "$LOCAL.rej" || success
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174 fi
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175 failure
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176 fi
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177
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178 echo
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179 echo "hgmerge: unable to find any merge utility!"
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180 echo "supported programs:"
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181 echo "merge, FileMerge, tkdiff, kdiff3, meld, diff+patch"
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182 echo
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183 failure