Add an Emacs interface in contrib.

diff --git a/pack.h b/pack.h
index 657deaa3f43ebe8627caa93798dd8ae5d956601d..9dafa2b6d2c76919594218b12a2a36bd9067f2b7 100644 (file)
--- a/pack.h
+++ b/pack.h
@@ -21,6 +21,7 @@ enum object_type {
  */
 #define PACK_SIGNATURE 0x5041434b      /* "PACK" */
 #define PACK_VERSION 2
+#define pack_version_ok(v) ((v) == htonl(2) || (v) == htonl(3))
 struct pack_header {
        unsigned int hdr_signature;
        unsigned int hdr_version;