--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -211,18 +211,6 @@ def filter(s, cmd):
             return fn(s, cmd[len(name):].lstrip())
     return pipefilter(s, cmd)
 
-def find_in_path(name, path, default=None):
-    '''find name in search path. path can be string (will be split
-    with os.pathsep), or iterable thing that returns strings.  if name
-    found, return path to name. else return default.'''
-    if isinstance(path, str):
-        path = path.split(os.pathsep)
-    for p in path:
-        p_name = os.path.join(p, name)
-        if os.path.exists(p_name):
-            return p_name
-    return default
-
 def binary(s):
     """return true if a string is binary data using diff's heuristic"""
     if s and '\0' in s[:4096]:
@@ -920,6 +908,30 @@ if os.name == 'nt':
     # username and groupname functions above, too.
     def isowner(fp, st=None):
         return True
+        
+    def find_in_path(name, path, default=None):
+        '''find name in search path. path can be string (will be split
+        with os.pathsep), or iterable thing that returns strings.  if name
+        found, return path to name. else return default. name is looked up
+        using cmd.exe rules, using PATHEXT.'''
+        if isinstance(path, str):
+            path = path.split(os.pathsep)
+            
+        pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD')
+        pathext = pathext.lower().split(os.pathsep)
+        isexec = os.path.splitext(name)[1].lower() in pathext
+        
+        for p in path:
+            p_name = os.path.join(p, name)
+            
+            if isexec and os.path.exists(p_name):
+                return p_name
+            
+            for ext in pathext:
+                p_name_ext = p_name + ext
+                if os.path.exists(p_name_ext):
+                    return p_name_ext
+        return default
 
     try:
         # override functions with win32 versions if possible
@@ -1058,6 +1070,18 @@ else:
         if st is None:
             st = fstat(fp)
         return st.st_uid == os.getuid()
+        
+    def find_in_path(name, path, default=None):
+        '''find name in search path. path can be string (will be split
+        with os.pathsep), or iterable thing that returns strings.  if name
+        found, return path to name. else return default.'''
+        if isinstance(path, str):
+            path = path.split(os.pathsep)
+        for p in path:
+            p_name = os.path.join(p, name)
+            if os.path.exists(p_name):
+                return p_name
+        return default
 
 def _buildencodefun():
     e = '_'

--- a/mercurial/util_win32.py
+++ b/mercurial/util_win32.py
@@ -297,30 +297,5 @@ class posixfile_nt(object):
             win32file.SetEndOfFile(self.handle)
         except pywintypes.error, err:
             raise WinIOError(err)
-            
-def find_in_path(name, path, default=None):
-    '''find name in search path. path can be string (will be split
-    with os.pathsep), or iterable thing that returns strings.  if name
-    found, return path to name. else return default. name is looked up
-    using cmd.exe rules, using PATHEXT.'''
-    if isinstance(path, str):
-        path = path.split(os.pathsep)
-        
-    pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD')
-    pathext = pathext.lower().split(os.pathsep)
-    isexec = os.path.splitext(name)[1].lower() in pathext
-    
-    for p in path:
-        p_name = os.path.join(p, name)
-        
-        if isexec and os.path.exists(p_name):
-            return p_name
-        
-        for ext in pathext:
-            p_name_ext = p_name + ext
-            if os.path.exists(p_name_ext):
-                return p_name_ext
-            
-    return default
 
 getuser_fallback = win32api.GetUserName