#!/bin/sh
#
# An example hook script to check the commit log message.
-# Called by git-commit-script with one argument, the name of the file
+# Called by git-commit with one argument, the name of the file
# that has the commit message. The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit. The hook is allowed to edit the commit message file.
# This example catches duplicate Signed-off-by lines.
test "" = "$(grep '^Signed-off-by: ' "$1" |
- sort | uniq -c | sed -e '/^[ ]*1 /d')"
+ sort | uniq -c | sed -e '/^[ ]*1[ ]/d')" || {
+ echo >&2 Duplicate Signed-off-by lines.
+ exit 1
+}
+