Add how-to on using update-hook.

diff --git a/read-cache.c b/read-cache.c
index 5820f18d9a79fd83ff5a418a5dfc68bbf7c5c354..ced597318e783ab08b73c88f8b724be51f3b3dec 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -191,6 +191,8 @@ int ce_path_match(const struct cache_entry *ce, const char **pathspec)
                        return 1;
                if (name[matchlen] == '/' || !name[matchlen])
                        return 1;
+               if (!matchlen)
+                       return 1;
        }
        return 0;
 }