Add geef_commit:tree_id

c_src/geef.c

@@ -3,6 +3,7 @@
 #include "reference.h"
 #include "oid.h"
 #include "object.h"
+#include "commit.h"
 #include "geef.h"
 #include <stdio.h>
 #include <string.h>
@@ -97,6 +98,7 @@ static ErlNifFunc geef_funcs[] =
 	{"oid_fmt", 1, geef_oid_fmt},
 	{"oid_parse", 1, geef_oid_parse},
 	{"object_lookup", 2, geef_object_lookup},
+	{"commit_tree_id", 1, geef_commit_tree_id},
 };
 
 ERL_NIF_INIT(geef, geef_funcs, load, NULL, NULL, unload)