Clean up syntax for some scripts.
diff --git a/Tools/scripts/svneol.py b/Tools/scripts/svneol.py
index 80616a6..8abdd01 100644
--- a/Tools/scripts/svneol.py
+++ b/Tools/scripts/svneol.py
@@ -32,9 +32,12 @@
 
 import re
 import os
+import sys
+import subprocess
+
 
 def propfiles(root, fn):
-    default = os.path.join(root, ".svn", "props", fn+".svn-work")
+    default = os.path.join(root, ".svn", "props", fn + ".svn-work")
     try:
         format = int(open(os.path.join(root, ".svn", "format")).read().strip())
     except IOError:
@@ -42,12 +45,13 @@
     if format in (8, 9):
         # In version 8 and 9, committed props are stored in prop-base, local
         # modifications in props
-        return [os.path.join(root, ".svn", "prop-base", fn+".svn-base"),
-                os.path.join(root, ".svn", "props", fn+".svn-work")]
-    raise ValueError, "Unknown repository format"
+        return [os.path.join(root, ".svn", "prop-base", fn + ".svn-base"),
+                os.path.join(root, ".svn", "props", fn + ".svn-work")]
+    raise ValueError("Unknown repository format")
+
 
 def proplist(root, fn):
-    "Return a list of property names for file fn in directory root"
+    """Return a list of property names for file fn in directory root."""
     result = []
     for path in propfiles(root, fn):
         try:
@@ -56,7 +60,7 @@
             # no properties file: not under version control,
             # or no properties set
             continue
-        while 1:
+        while True:
             # key-value pairs, of the form
             # K <length>
             # <keyname>NL
@@ -79,13 +83,32 @@
         f.close()
     return result
 
+
+def set_eol_native(path):
+    cmd = 'svn propset svn:eol-style native "{}"'.format(path)
+    propset = subprocess.Popen(cmd, shell=True)
+    propset.wait()
+
+
 possible_text_file = re.compile(r"\.([hc]|py|txt|sln|vcproj)$").search
 
-for root, dirs, files in os.walk('.'):
-    if '.svn' in dirs:
-        dirs.remove('.svn')
-    for fn in files:
-        if possible_text_file(fn):
+
+def main():
+    for arg in sys.argv[1:] or [os.curdir]:
+        if os.path.isfile(arg):
+            root, fn = os.path.split(arg)
             if 'svn:eol-style' not in proplist(root, fn):
-                path = os.path.join(root, fn)
-                os.system('svn propset svn:eol-style native "%s"' % path)
+                set_eol_native(arg)
+        elif os.path.isdir(arg):
+            for root, dirs, files in os.walk(arg):
+                if '.svn' in dirs:
+                    dirs.remove('.svn')
+                for fn in files:
+                    if possible_text_file(fn):
+                        if 'svn:eol-style' not in proplist(root, fn):
+                            path = os.path.join(root, fn)
+                            set_eol_native(path)
+
+
+if __name__ == '__main__':
+    main()