1 files changed, 62 insertions, 0 deletions
diff --git a/git-hooks/commit-msg b/git-hooks/commit-msg
new file mode 100755
index 00000000000..d51a3303585
--- /dev/null
+++ b/git-hooks/commit-msg
@@ -0,0 +1,62 @@
+#!/bin/sh
+#
+# An example hook script to check the commit log message.
+# 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.
+#
+# To enable this hook, make this file executable.
+
+# Uncomment the below to add a Signed-off-by line to the message.
+# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
+# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
+
+# This example catches duplicate Signed-off-by lines.
+
+abort() {
+    cp $1 $1.save
+    cat >&2 <<EOF
+Commit aborted, your commit message was saved as '$1.save'.
+
+Reason: $2
+
+EOF
+    exit 1
+}
+
+test "" = "$(grep '^Signed-off-by: ' "$1" |
+	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {
+	abort "$1" "Duplicate Signed-off-by lines."
+}
+
+# Check that the first line exists, and is not an asterisk
+
+if [ -z "`head -n 1 $1 | grep -v '^[ \t]*\*'`" ] ; then
+    abort "$1" "Please provide the general description on the first line."
+fi
+
+# ...and that it is not too long
+
+if [ "`head -n 1 $1 | wc -c`" -gt 79 ] ; then
+    abort "$1" "The first line is too long, please try to fit into 79 characters."
+fi
+
+# ...and that it does not continue on the second line
+if [ "`wc -l < $1`" -gt 1 -a -n "`head -n 2 $1 | tail -n 1 | sed 's/^#.*//'`" ] ; then
+    abort "$1" "The second line is not empty - maybe the first line continues there?"
+fi
+
+# Check that the message is not a ChangeLog-like one
+
+if [ -n "`head -n 1 $1 | grep '^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}.*<.*@.*>'`" ] ; then
+    abort "$1" "The commit message looks like ChangeLog, please use the git form."
+fi
+
+# Check for whitespace in front of *'s
+
+if [ -n "`grep '^[[:space:]]\+\*.*:' $1`" -a -z "`grep '^\*' $1`" ] ; then
+    abort "$1" "Please don't use whitespace in front of '* file: Description.' entries."
+fi
+
+exit 0