improved test coverage for distutils.cmd
diff --git a/Lib/distutils/cmd.py b/Lib/distutils/cmd.py
index dfcbe23..0e56460 100644
--- a/Lib/distutils/cmd.py
+++ b/Lib/distutils/cmd.py
@@ -214,7 +214,7 @@
     # and they can be guaranteed that thereafter, self.foo will be
     # a list of strings.
 
-    def _ensure_stringlike (self, option, what, default=None):
+    def _ensure_stringlike(self, option, what, default=None):
         val = getattr(self, option)
         if val is None:
             setattr(self, option, default)
@@ -224,13 +224,13 @@
                   "'%s' must be a %s (got `%s`)" % (option, what, val)
         return val
 
-    def ensure_string (self, option, default=None):
+    def ensure_string(self, option, default=None):
         """Ensure that 'option' is a string; if not defined, set it to
         'default'.
         """
         self._ensure_stringlike(option, "string", default)
 
-    def ensure_string_list (self, option):
+    def ensure_string_list(self, option):
         """Ensure that 'option' is a list of strings.  If 'option' is
         currently a string, we split it either on /,\s*/ or /\s+/, so
         "foo bar baz", "foo,bar,baz", and "foo,   bar baz" all become
@@ -258,20 +258,20 @@
                         (option, val)
 
 
-    def _ensure_tested_string (self, option, tester,
-                               what, error_fmt, default=None):
+    def _ensure_tested_string(self, option, tester,
+                              what, error_fmt, default=None):
         val = self._ensure_stringlike(option, what, default)
         if val is not None and not tester(val):
             raise DistutilsOptionError, \
                   ("error in '%s' option: " + error_fmt) % (option, val)
 
-    def ensure_filename (self, option):
+    def ensure_filename(self, option):
         """Ensure that 'option' is the name of an existing file."""
         self._ensure_tested_string(option, os.path.isfile,
                                    "filename",
                                    "'%s' does not exist or is not a file")
 
-    def ensure_dirname (self, option):
+    def ensure_dirname(self, option):
         self._ensure_tested_string(option, os.path.isdir,
                                    "directory name",
                                    "'%s' does not exist or is not a directory")