Document missing cp options

diff --git a/include/usage.h b/include/usage.h
index bc6655e..f7ac0de 100644 (file)
--- a/include/usage.h
+++ b/include/usage.h
@@ -198,7 +198,8 @@
        "\t-d\tPreserves links\n" \
        "\t-p\tPreserves file attributes if possible\n" \
        "\t-f\tforce (implied; ignored) - always set\n" \
-       "\t-R\tCopies directories recursively"
+       "\t-i\tinteractive, prompt before overwrite\n" \
+       "\t-R,-r\tCopies directories recursively"
 
 #define cpio_trivial_usage \
        "-[dimtuv][F cpiofile]"