Adding egrep hook; better iteration for whitespace; improving local tests

tests/test_hooks.py

@@ -2,7 +2,7 @@ import os
 import pytest
 
 def test_hooks_exec():
-    fh = os.popen("find Hooks -type f -exec ls -l {} \\; | egrep ^-rw-")
+    fh = os.popen("find Hooks -type f -exec ls -l {} \\; | grep -E ^-rw-")
     output = fh.read()
     retcode = fh.close()
     assert retcode == 256 and output == ''