add a "basic" diff config callback

diff --git a/INSTALL b/INSTALL
index 289b046a443c0647624607d471289b2c7dcd470b..f1eb4049b9f839c1b3d1aa5a4d7387d0e93f0f5c 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -79,6 +79,9 @@ Issues of note:
        - "perl" and POSIX-compliant shells are needed to use most of
          the barebone Porcelainish scripts.
 
+       - "cpio" is used by git-merge for saving and restoring the index,
+         and by git-clone when doing a local (possibly hardlinked) clone.
+
  - Some platform specific issues are dealt with Makefile rules,
    but depending on your specific installation, you may not
    have all the libraries/tools needed, or you may have