blame: show "previous" information in --porcelain/--incremental format

diff --git a/decorate.h b/decorate.h
index 1fa4ad9beb08f23888814b99183487ab85378bfd..e7328044ff84a4acaaa7f5f4bc5f85375dc7a07a 100644 (file)
--- a/decorate.h
+++ b/decorate.h
@@ -2,7 +2,7 @@
 #define DECORATE_H
 
 struct object_decoration {
-       struct object *base;
+       const struct object *base;
        void *decoration;
 };
 
@@ -12,7 +12,7 @@ struct decoration {
        struct object_decoration *hash;
 };
 
-extern void *add_decoration(struct decoration *n, struct object *obj, void *decoration);
-extern void *lookup_decoration(struct decoration *n, struct object *obj);
+extern void *add_decoration(struct decoration *n, const struct object *obj, void *decoration);
+extern void *lookup_decoration(struct decoration *n, const struct object *obj);
 
 #endif