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1 #!/bin/sh
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2 #
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3 # An example hook script to check the commit log message.
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4 # Called by "git commit" with one argument, the name of the file
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5 # that has the commit message. The hook should exit with non-zero
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6 # status after issuing an appropriate message if it wants to stop the
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7 # commit. The hook is allowed to edit the commit message file.
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8 #
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9 # To enable this hook, rename this file to "commit-msg".
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10
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11 # Uncomment the below to add a Signed-off-by line to the message.
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12 # Doing this in a hook is a bad idea in general, but the prepare-commit-msg
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13 # hook is more suited to it.
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14 #
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15 # SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
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16 # grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
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17
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18 # This example catches duplicate Signed-off-by lines.
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19
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20 test "" = "$(grep '^Signed-off-by: ' "$1" |
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21 sort | uniq -c | sed -e '/^[ ]*1[ ]/d')" || {
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22 echo >&2 Duplicate Signed-off-by lines.
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23 exit 1
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24 }
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