Added --no-option's and made args more config-friendly.

README.rst

@@ -2,7 +2,7 @@
 HTTPie: a CLI, cURL-like tool for humans
 ****************************************
 
-v0.3.0
+v0.4.0dev (`stable version`_)
 
 HTTPie is a **command line HTTP client**. Its goal is to make CLI interaction
 with web services as **human-friendly** as possible. It provides a
@@ -895,6 +895,11 @@ following keys:
                               For instance, you can use this option to change
                               the default style and output options:
                               ``"default_options": ["--style=fruity", "--body"]``
+                              Default options from config file can be unset
+                              via ``--no-OPTION`` arguments passed on the
+                              command line (e.g., ``--no-style`` would unset
+                              ``fruity`` as the default style for the
+                              particular invocation).
 =========================     =================================================
 
 The default location is ``~/.httpie/config.json``
@@ -1044,6 +1049,11 @@ Changelog
 
 *You can click a version name to see a diff with the previous one.*
 
+* `0.4.0dev`_
+    * Added ``--no-option`` for every ``--option`` to be config-friendly.
+    * Mutually exclusive arguments can be specified multiple times. The
+      last value is used.
+
 * `0.3.0`_ (2012-09-21)
     * Allow output redirection on Windows.
     * Added configuration file.
@@ -1137,6 +1147,7 @@ Changelog
 .. _0.2.6: https://github.com/jkbr/httpie/compare/0.2.5...0.2.6
 .. _0.2.7: https://github.com/jkbr/httpie/compare/0.2.5...0.2.7
 .. _0.3.0: https://github.com/jkbr/httpie/compare/0.2.7...0.3.0
+.. _0.4.0dev: https://github.com/jkbr/httpie/compare/0.3.0...master
 .. _stable version: https://github.com/jkbr/httpie/tree/0.3.0#readme
 .. _AUTHORS.rst: https://github.com/jkbr/httpie/blob/master/AUTHORS.rst
 .. _LICENSE: https://github.com/jkbr/httpie/blob/master/LICENSE

httpie/cli.py

@@ -27,10 +27,12 @@ def _(text):
 
 parser = Parser(
     description='%s <http://httpie.org>' % __doc__.strip(),
-    epilog=_('''
+    epilog=
-        Suggestions and bug reports are greatly appreciated:
+        'For every --option there is a --no-option that reverts the option\n'
-        https://github.com/jkbr/httpie/issues
+        'to its default value.'
-    ''')
+        '\n\n'
+        'Suggestions and bug reports are greatly appreciated:\n'
+        'https://github.com/jkbr/httpie/issues'
 )
 
 
@@ -89,7 +91,7 @@ positional.add_argument(
 content_type = parser.add_argument_group(
     title='Predefined content types',
     description=None
-).add_mutually_exclusive_group(required=False)
+)
 
 content_type.add_argument(
     '--json', '-j', action='store_true',
@@ -159,8 +161,7 @@ output_processing.add_argument(
 ###############################################################################
 output_options = parser.add_argument_group(title='Output options')
 
-output_print = output_options.add_mutually_exclusive_group(required=False)
+output_options.add_argument('--print', '-p', dest='output_options',
-output_print.add_argument('--print', '-p', dest='output_options',
     metavar='WHAT',
     help=_('''
         String specifying what the output should contain:
@@ -179,7 +180,7 @@ output_print.add_argument('--print', '-p', dest='output_options',
         response_body=OUT_RESP_BODY,
     ))
 )
-output_print.add_argument(
+output_options.add_argument(
     '--verbose', '-v', dest='output_options',
     action='store_const', const=''.join(OUTPUT_OPTIONS),
     help=_('''
@@ -187,7 +188,7 @@ output_print.add_argument(
         Shortcut for --print={0}.
     '''.format(''.join(OUTPUT_OPTIONS)))
 )
-output_print.add_argument(
+output_options.add_argument(
     '--headers', '-h', dest='output_options',
     action='store_const', const=OUT_RESP_HEAD,
     help=_('''
@@ -195,7 +196,7 @@ output_print.add_argument(
         Shortcut for --print={0}.
     '''.format(OUT_RESP_HEAD))
 )
-output_print.add_argument(
+output_options.add_argument(
     '--body', '-b', dest='output_options',
     action='store_const', const=OUT_RESP_BODY,
     help=_('''

httpie/input.py

@@ -96,7 +96,10 @@ class Parser(ArgumentParser):
 
         self.env = env
 
-        args = super(Parser, self).parse_args(args, namespace)
+        args, no_options = super(Parser, self).parse_known_args(args, namespace)
+        #args = super(Parser, self).parse_args(args, namespace)
+
+        self._apply_no_options(args, no_options)
 
         if not args.json and env.config.implicit_content_type == 'form':
             args.form = True
@@ -126,6 +129,33 @@ class Parser(ArgumentParser):
 
         return args
 
+    def _apply_no_options(self, args, no_options):
+        """For every `--no-OPTION` in `no_options`, set `args.OPTION` to
+        its default value. This allows for un-setting of options, e.g.,
+        specified in config.
+
+        """
+        invalid = []
+
+        for option in no_options:
+            if not option.startswith('--no-'):
+                invalid.append(option)
+                continue
+
+            # --no-option => --option
+            inverted = '--' + option[5:]
+            for action in self._actions:
+                if inverted in action.option_strings:
+                    setattr(args, action.dest, action.default)
+                    break
+            else:
+                invalid.append(option)
+
+        if invalid:
+            msg = 'unrecognized arguments: %s'
+            self.error(msg % ' '.join(invalid))
+
+
     def _print_message(self, message, file=None):
         # Sneak in our stderr/stdout.
         file = {

tests/tests.py

@@ -1236,6 +1236,28 @@ class ArgumentParserTestCase(unittest.TestCase):
         ])
 
 
+class TestNoOptions(BaseTestCase):
+
+    def test_valid_no_options(self):
+        r = http(
+            '--verbose',
+            '--no-verbose',
+            'GET',
+            httpbin('/get')
+        )
+        self.assertNotIn('GET /get HTTP/1.1', r)
+
+    def test_invalid_no_options(self):
+        r = http(
+            '--no-war',
+            'GET',
+            httpbin('/get')
+        )
+        self.assertEqual(r.exit_status, 1)
+        self.assertIn('unrecognized arguments: --no-war', r.stderr)
+        self.assertNotIn('GET /get HTTP/1.1', r)
+
+
 class READMETest(BaseTestCase):
 
     @skipIf(not has_docutils(), 'docutils not installed')