diff --git a/src/chk.rs b/src/chk.rs
new file mode 100644
index 0000000..0c320bc
--- /dev/null
+++ b/src/chk.rs
@@ -0,0 +1,6 @@
+
+pub trait CommitMsgCheck {
+    fn check(&self, msg: &str) -> bool;
+
+    fn print_hint(&self);
+}