e@0: #!/bin/sh
e@0: #
e@0: # An example hook script to check the commit log message.
e@0: # Called by "git commit" with one argument, the name of the file
e@0: # that has the commit message.  The hook should exit with non-zero
e@0: # status after issuing an appropriate message if it wants to stop the
e@0: # commit.  The hook is allowed to edit the commit message file.
e@0: #
e@0: # To enable this hook, rename this file to "commit-msg".
e@0: 
e@0: # Uncomment the below to add a Signed-off-by line to the message.
e@0: # Doing this in a hook is a bad idea in general, but the prepare-commit-msg
e@0: # hook is more suited to it.
e@0: #
e@0: # SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
e@0: # grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
e@0: 
e@0: # This example catches duplicate Signed-off-by lines.
e@0: 
e@0: test "" = "$(grep '^Signed-off-by: ' "$1" |
e@0: 	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
e@0: 	echo >&2 Duplicate Signed-off-by lines.
e@0: 	exit 1
e@0: }