Index: subversion/tests/clients/cmdline/commit_tests.py
===================================================================
--- subversion/tests/clients/cmdline/commit_tests.py	(revision 17264)
+++ subversion/tests/clients/cmdline/commit_tests.py	(working copy)
@@ -1970,13 +1970,17 @@
 
   # Setup the hook configs to echo data back
   post_commit_hook = svntest.main.get_post_commit_hook_path (repo_dir)
-  svntest.main.file_append (post_commit_hook,
-                            """#!/bin/sh
-                            echo "Post-commit Hook says nothing doing on stderr" > /dev/stderr
-                            exit -1
-                            """)
-  os.chmod (post_commit_hook, 0755)
 
+  # create a post-commit hoook
+  post_commit_hook_code = ( "#!"+ sys.executable +"\n"
+                            "import sys\n"
+                            "\n"
+                            "sys.stderr.write('Post-commit Hook says nothing "
+                            "doing on stderr')\n"
+                            "sys.exit(-1)\n")
+  svntest.main.create_python_hook_script (post_commit_hook,
+                                          post_commit_hook_code)
+
   # Modify iota just so there is something to commit.
   iota_path = os.path.join (wc_dir, "iota")
   svntest.main.file_append (iota_path, "lakalakalakalaka")
@@ -1989,8 +1993,8 @@
                       "Committed revision 2.\n",
                       "\n",
                       "Warning:'post-commit' hook failed with error output:\n",
-                      "Post-commit Hook says nothing doing on stderr\n",
-                      "\n"]
+                      "Post-commit Hook says nothing doing on stderr\n"
+                    ]
 
   svntest.actions.run_and_verify_svn (None, expected_output, [],
                                       'ci', '-m', 'log msg', iota_path)
Index: subversion/tests/clients/cmdline/svntest/main.py
===================================================================
--- subversion/tests/clients/cmdline/svntest/main.py	(revision 17264)
+++ subversion/tests/clients/cmdline/svntest/main.py	(working copy)
@@ -218,7 +218,6 @@
 
   return os.path.join(repo_dir, "hooks", "post-commit")
 
-
 # Run any binary, logging the command line (TODO: and return code)
 def run_command(command, error_expected, binary_mode=0, *varargs):
   """Run COMMAND with VARARGS; return stdout, stderr as lists of lines.
@@ -494,6 +493,35 @@
   else:
     return input
 
+
+# create_python_hook_script : Create a hook script with the given
+#                             python code
+# Parameters                : hook_name - full path of the target
+#                                         hook file to be created.
+#                             hook_script_code - python code for
+#                                                the hook.
+def create_python_hook_script (hook_name, hook_script_code):
+  if sys.platform == 'win32':
+    # on windows, create a batch file wrapper to the python script
+    hook_py = os.path.join (hook_name, ".py")
+    hook = os.path.join (hook_name, ".bat")
+    # fill the python file
+    file_append (hook_py,
+                 "#!"+ sys.executable +"\n")
+    file_append (hook_py,
+                 hook_script_code)
+    # fill the batch wrapper file
+    file_append (hook,
+                 "@echo off\n",
+                 hook_py)
+  else:   # For all other platforms
+    file_append (hook_name,
+                 "#!"+ sys.executable +"\n")
+    file_append (hook_name,
+                 hook_script_code)
+    os.chmod (hook_name, 0755)
+
+
 ######################################################################
 # Sandbox handling