hook: add a simple first example

diff --git a/dir.h b/dir.h
index a89c13e27a4fb55883f811a2c82fb465bb14988d..e3717055d193366e6780b50d68f6a3c2360d32c4 100644 (file)
--- a/dir.h
+++ b/dir.h
@@ -197,6 +197,9 @@ struct dir_struct {
        unsigned unmanaged_exclude_files;
 };
 
+/*Count the number of slashes for string s*/
+extern int count_slashes(const char *s);
+
 /*
  * The ordering of these constants is significant, with
  * higher-numbered match types signifying "closer" (i.e. more