yamllint version 1.24.0

Support sorting by locale with strcoll(). Properly handle case and accents.

CHANGELOG.rst

@@ -1,6 +1,32 @@
 Changelog
 =========
 
+1.24.0 (2020-07-15)
+-------------------
+
+- Specify config with environment variable ``YAMLLINT_CONFIG_FILE``
+- Fix bug with CRLF in ``new-lines`` and ``require-starting-space``
+- Do not run linter on directories whose names look like YAML files
+- Add ``locale`` config option and make ``key-ordering`` locale-aware
+
+1.23.0 (2020-04-17)
+-------------------
+
+- Allow rules to validate their configuration
+- Add options ``extra-required`` and ``extra-allowed`` to ``quoted-strings``
+
+1.22.1 (2020-04-15)
+-------------------
+
+- Fix ``quoted-strings`` rule with ``only-when-needed`` on corner cases
+
+1.22.0 (2020-04-13)
+-------------------
+
+- Add ``check-keys`` option to the ``truthy`` rule
+- Fix ``quoted-strings`` rule not working on sequences items
+- Sunset Python 2
+
 1.21.0 (2020-03-24)
 -------------------
 

CONTRIBUTING.rst

@@ -0,0 +1,44 @@
+Contributing
+============
+
+Pull requests are the best way to propose changes to the codebase.
+Contributions are welcome, but they have to meet some criteria.
+
+Pull Request Process
+--------------------
+
+1. Fork this Git repository and create your branch from ``master``.
+
+2. Make sure the tests pass:
+
+   .. code:: bash
+
+    python setup.py test
+
+3. If you add code that should be tested, add tests.
+
+4. Make sure the linters pass:
+
+   .. code:: bash
+
+    flake8 .
+
+   If you added/modified documentation:
+
+   .. code:: bash
+
+    doc8 $(git ls-files '*.rst')
+
+   If you touched YAML files:
+
+   .. code:: bash
+
+    yamllint --strict $(git ls-files '*.yaml' '*.yml')
+
+5. If relevant, update documentation (either in ``docs`` directly or in rules
+   files themselves).
+
+6. Write a `good commit message
+   <http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html>`_.
+
+7. Then, open a pull request.

README.rst

@@ -21,6 +21,10 @@ indentation, etc.
 
 Written in Python (compatible with Python 2 & 3).
 
+⚠ Python 2 upstream support stopped on January 1, 2020. yamllint will keep
+best-effort support for Python 2.7 until January 1, 2021. Passed that date,
+yamllint will drop all Python 2-related code.
+
 Documentation
 -------------
 

docs/conf.py

@@ -6,9 +6,9 @@ import sys
 import os
 from unittest.mock import MagicMock
 
-sys.path.insert(0, os.path.abspath('..'))  # noqa
+sys.path.insert(0, os.path.abspath('..'))
 
-from yamllint import __copyright__, APP_NAME, APP_VERSION
+from yamllint import __copyright__, APP_NAME, APP_VERSION  # noqa
 
 # -- General configuration ------------------------------------------------
 

docs/configuration.rst

@@ -16,6 +16,7 @@ following locations (by order of preference):
 
 - ``.yamllint``, ``.yamllint.yaml`` or ``.yamllint.yml`` in the current working
   directory
+- the file referenced by ``$YAMLLINT_CONFIG_FILE``, if set
 - ``$XDG_CONFIG_HOME/yamllint/config``
 - ``~/.config/yamllint/config``
 
@@ -188,3 +189,22 @@ Here is a more complex example:
      ignore: |
        *.ignore-trailing-spaces.yaml
        ascii-art/*
+
+Setting the locale
+------------------
+
+It is possible to set the ``locale`` option globally. This is passed to Python's
+`locale.setlocale
+<https://docs.python.org/3/library/locale.html#locale.setlocale>`_,
+so an empty string ``""`` will use the system default locale, while e.g.
+``"en_US.UTF-8"`` will use that. If unset, the default is ``"C.UTF-8"``.
+
+Currently this only affects the ``key-ordering`` rule. The default will order
+by Unicode code point number, while other locales will sort case and accents
+properly as well.
+
+.. code-block:: yaml
+
+ extends: default
+
+ locale: en_US.UTF-8

setup.cfg

@@ -4,6 +4,7 @@ universal = 1
 [flake8]
 import-order-style = pep8
 application-import-names = yamllint
+ignore = W503,W504
 
 [build_sphinx]
 all-files = 1

setup.py

@@ -42,6 +42,7 @@ setup(
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Topic :: Software Development',
         'Topic :: Software Development :: Debuggers',
         'Topic :: Software Development :: Quality Assurance',

tests/rules/test_comments.py

@@ -186,6 +186,27 @@ class CommentsTestCase(RuleTestCase):
                    'inline: comment  #\n'
                    'foo: bar\n', conf)
 
+    def test_empty_comment_crlf_dos_newlines(self):
+        conf = ('comments:\n'
+                '  require-starting-space: true\n'
+                '  min-spaces-from-content: 2\n'
+                'new-lines:\n'
+                '  type: dos\n')
+        self.check('---\r\n'
+                   '# This is paragraph 1.\r\n'
+                   '#\r\n'
+                   '# This is paragraph 2.\r\n', conf)
+
+    def test_empty_comment_crlf_disabled_newlines(self):
+        conf = ('comments:\n'
+                '  require-starting-space: true\n'
+                '  min-spaces-from-content: 2\n'
+                'new-lines: disable\n')
+        self.check('---\r\n'
+                   '# This is paragraph 1.\r\n'
+                   '#\r\n'
+                   '# This is paragraph 2.\r\n', conf)
+
     def test_first_line(self):
         conf = ('comments:\n'
                 '  require-starting-space: true\n'

tests/rules/test_key_ordering.py

@@ -14,6 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import locale
+
 from tests.common import RuleTestCase
 
 
@@ -103,10 +105,6 @@ class KeyOrderingTestCase(RuleTestCase):
                    'haïr: true\n'
                    'hais: true\n', conf,
                    problem=(3, 1))
-        self.check('---\n'
-                   'haïr: true\n'
-                   'hais: true\n', conf,
-                   problem=(3, 1))
 
     def test_key_tokens_in_flow_sequences(self):
         conf = 'key-ordering: enable'
@@ -114,3 +112,39 @@ class KeyOrderingTestCase(RuleTestCase):
                    '[\n'
                    '  key: value, mappings, in, flow: sequence\n'
                    ']\n', conf)
+
+    def test_locale_case(self):
+        self.addCleanup(locale.setlocale, locale.LC_ALL, 'C.UTF-8')
+        try:
+            locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
+        except locale.Error:
+            self.skipTest('locale en_US.UTF-8 not available')
+        conf = ('key-ordering: enable')
+        self.check('---\n'
+                   't-shirt: 1\n'
+                   'T-shirt: 2\n'
+                   't-shirts: 3\n'
+                   'T-shirts: 4\n', conf)
+        self.check('---\n'
+                   't-shirt: 1\n'
+                   't-shirts: 2\n'
+                   'T-shirt: 3\n'
+                   'T-shirts: 4\n', conf,
+                   problem=(4, 1))
+
+    def test_locale_accents(self):
+        self.addCleanup(locale.setlocale, locale.LC_ALL, 'C.UTF-8')
+        try:
+            locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
+        except locale.Error:
+            self.skipTest('locale en_US.UTF-8 not available')
+        conf = ('key-ordering: enable')
+        self.check('---\n'
+                   'hair: true\n'
+                   'haïr: true\n'
+                   'hais: true\n'
+                   'haïssable: true\n', conf)
+        self.check('---\n'
+                   'hais: true\n'
+                   'haïr: true\n', conf,
+                   problem=(3, 1))

tests/rules/test_new_lines.py

@@ -40,6 +40,16 @@ class NewLinesTestCase(RuleTestCase):
         self.check('---\ntext\n', conf)
         self.check('---\r\ntext\r\n', conf, problem=(1, 4))
 
+    def test_unix_type_required_st_sp(self):
+        # If we find a CRLF when looking for Unix newlines, yamllint
+        # should always raise, regardless of logic with
+        # require-starting-space.
+        conf = ('new-line-at-end-of-file: disable\n'
+                'new-lines: {type: unix}\n'
+                'comments:\n'
+                '  require-starting-space: true\n')
+        self.check('---\r\n#\r\n', conf, problem=(1, 4))
+
     def test_dos_type(self):
         conf = ('new-line-at-end-of-file: disable\n'
                 'new-lines: {type: dos}\n')

tests/rules/test_quoted_strings.py

@@ -16,6 +16,8 @@
 
 from tests.common import RuleTestCase
 
+from yamllint import config
+
 
 class QuotedTestCase(RuleTestCase):
     rule_id = 'quoted-strings'
@@ -51,8 +53,14 @@ class QuotedTestCase(RuleTestCase):
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
-                   conf, problem=(4, 10))
+                   'block-seq:\n'
+                   '  - foo\n'                               # fails
+                   '  - "foo"\n'
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(4, 10), problem2=(17, 5),
+                   problem3=(19, 12), problem4=(20, 15))
         self.check('---\n'
                    'multiline string 1: |\n'
                    '  line 1\n'
@@ -85,9 +93,16 @@ class QuotedTestCase(RuleTestCase):
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
-                   conf, problem1=(4, 10), problem2=(5, 10),
+                   'block-seq:\n'
-                   problem3=(6, 10), problem4=(7, 10))
+                   '  - foo\n'                               # fails
+                   '  - "foo"\n'                             # fails
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(4, 10), problem2=(5, 10), problem3=(6, 10),
+                   problem4=(7, 10), problem5=(17, 5), problem6=(18, 5),
+                   problem7=(19, 12), problem8=(19, 17), problem9=(20, 15),
+                   problem10=(20, 23))
         self.check('---\n'
                    'multiline string 1: |\n'
                    '  line 1\n'
@@ -120,8 +135,14 @@ class QuotedTestCase(RuleTestCase):
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
-                   conf, problem1=(4, 10), problem2=(8, 10))
+                   'block-seq:\n'
+                   '  - foo\n'                               # fails
+                   '  - "foo"\n'
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(4, 10), problem2=(8, 10), problem3=(17, 5),
+                   problem4=(19, 12), problem5=(20, 15))
         self.check('---\n'
                    'multiline string 1: |\n'
                    '  line 1\n'
@@ -137,112 +158,7 @@ class QuotedTestCase(RuleTestCase):
                    '   word 2"\n',
                    conf, problem1=(9, 3))
 
-    def test_disallow_redundant_quotes(self):
+    def test_any_quotes_not_required(self):
-        conf = 'quoted-strings: {required: only-when-needed}\n'
-
-        self.check('---\n'
-                   'boolean1: true\n'
-                   'number1: 123\n'
-                   'string1: foo\n'
-                   'string2: "foo"\n'                        # fails
-                   'string3: "true"\n'
-                   'string4: "123"\n'
-                   'string5: \'bar\'\n'                      # fails
-                   'string6: !!str genericstring\n'
-                   'string7: !!str 456\n'
-                   'string8: !!str "quotedgenericstring"\n'
-                   'binary: !!binary binstring\n'
-                   'integer: !!int intstring\n'
-                   'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
-                   conf, problem1=(5, 10), problem2=(8, 10))
-        self.check('---\n'
-                   'multiline string 1: |\n'
-                   '  line 1\n'
-                   '  line 2\n'
-                   'multiline string 2: >\n'
-                   '  word 1\n'
-                   '  word 2\n'
-                   'multiline string 3:\n'
-                   '  word 1\n'
-                   '  word 2\n'
-                   'multiline string 4:\n'
-                   '  "word 1\\\n'            # fails
-                   '   word 2"\n',
-                   conf, problem1=(12, 3))
-
-    def test_disallow_redundant_single_quotes(self):
-        conf = 'quoted-strings: {quote-type: single, ' + \
-                                'required: only-when-needed}\n'
-
-        self.check('---\n'
-                   'boolean1: true\n'
-                   'number1: 123\n'
-                   'string1: foo\n'
-                   'string2: "foo"\n'                        # fails
-                   'string3: "true"\n'                       # fails
-                   'string4: "123"\n'                        # fails
-                   'string5: \'bar\'\n'                      # fails
-                   'string6: !!str genericstring\n'
-                   'string7: !!str 456\n'
-                   'string8: !!str "quotedgenericstring"\n'
-                   'binary: !!binary binstring\n'
-                   'integer: !!int intstring\n'
-                   'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
-                   conf, problem1=(5, 10), problem2=(6, 10),
-                   problem3=(7, 10), problem4=(8, 10))
-        self.check('---\n'
-                   'multiline string 1: |\n'
-                   '  line 1\n'
-                   '  line 2\n'
-                   'multiline string 2: >\n'
-                   '  word 1\n'
-                   '  word 2\n'
-                   'multiline string 3:\n'
-                   '  word 1\n'
-                   '  word 2\n'
-                   'multiline string 4:\n'
-                   '  "word 1\\\n'            # fails
-                   '   word 2"\n',
-                   conf, problem1=(12, 3))
-
-    def test_single_quotes_required(self):
-        conf = 'quoted-strings: {quote-type: single, required: true}\n'
-
-        self.check('---\n'
-                   'boolean1: true\n'
-                   'number1: 123\n'
-                   'string1: foo\n'                          # fails
-                   'string2: "foo"\n'                        # fails
-                   'string3: "true"\n'                       # fails
-                   'string4: "123"\n'                        # fails
-                   'string5: \'bar\'\n'
-                   'string6: !!str genericstring\n'
-                   'string7: !!str 456\n'
-                   'string8: !!str "quotedgenericstring"\n'
-                   'binary: !!binary binstring\n'
-                   'integer: !!int intstring\n'
-                   'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
-                   conf, problem1=(4, 10), problem2=(5, 10),
-                   problem3=(6, 10), problem4=(7, 10))
-        self.check('---\n'
-                   'multiline string 1: |\n'
-                   '  line 1\n'
-                   '  line 2\n'
-                   'multiline string 2: >\n'
-                   '  word 1\n'
-                   '  word 2\n'
-                   'multiline string 3:\n'
-                   '  word 1\n'               # fails
-                   '  word 2\n'
-                   'multiline string 4:\n'
-                   '  "word 1\\\n'            # fails
-                   '   word 2"\n',
-                   conf, problem1=(9, 3), problem2=(12, 3))
-
-    def test_any_quotes_relaxed(self):
         conf = 'quoted-strings: {quote-type: any, required: false}\n'
 
         self.check('---\n'
@@ -259,7 +175,12 @@ class QuotedTestCase(RuleTestCase):
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
+                   'block-seq:\n'
+                   '  - foo\n'                               # fails
+                   '  - "foo"\n'
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
                    conf)
         self.check('---\n'
                    'multiline string 1: |\n'
@@ -276,7 +197,7 @@ class QuotedTestCase(RuleTestCase):
                    '   word 2"\n',
                    conf)
 
-    def test_single_quotes_relaxed(self):
+    def test_single_quotes_not_required(self):
         conf = 'quoted-strings: {quote-type: single, required: false}\n'
 
         self.check('---\n'
@@ -293,9 +214,14 @@ class QuotedTestCase(RuleTestCase):
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
-                   conf, problem2=(5, 10),
+                   'block-seq:\n'
-                   problem3=(6, 10), problem4=(7, 10))
+                   '  - foo\n'                               # fails
+                   '  - "foo"\n'
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(5, 10), problem2=(6, 10), problem3=(7, 10),
+                   problem4=(18, 5), problem5=(19, 17), problem6=(20, 23))
         self.check('---\n'
                    'multiline string 1: |\n'
                    '  line 1\n'
@@ -311,25 +237,31 @@ class QuotedTestCase(RuleTestCase):
                    '   word 2"\n',
                    conf, problem1=(12, 3))
 
-    def test_quotes_required(self):
+    def test_only_when_needed(self):
-        conf = 'quoted-strings: {quote-type: any, required: true}\n'
+        conf = 'quoted-strings: {required: only-when-needed}\n'
 
         self.check('---\n'
                    'boolean1: true\n'
                    'number1: 123\n'
-                   'string1: foo\n'                          # fails
+                   'string1: foo\n'
-                   'string2: "foo"\n'
+                   'string2: "foo"\n'                        # fails
                    'string3: "true"\n'
                    'string4: "123"\n'
-                   'string5: \'bar\'\n'
+                   'string5: \'bar\'\n'                      # fails
                    'string6: !!str genericstring\n'
                    'string7: !!str 456\n'
                    'string8: !!str "quotedgenericstring"\n'
                    'binary: !!binary binstring\n'
                    'integer: !!int intstring\n'
                    'boolean2: !!bool boolstring\n'
-                   'boolean3: !!bool "quotedboolstring"\n',
+                   'boolean3: !!bool "quotedboolstring"\n'
-                   conf, problem2=(4, 10))
+                   'block-seq:\n'
+                   '  - foo\n'
+                   '  - "foo"\n'                             # fails
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(5, 10), problem2=(8, 10), problem3=(18, 5),
+                   problem4=(19, 17), problem5=(20, 23))
         self.check('---\n'
                    'multiline string 1: |\n'
                    '  line 1\n'
@@ -338,9 +270,168 @@ class QuotedTestCase(RuleTestCase):
                    '  word 1\n'
                    '  word 2\n'
                    'multiline string 3:\n'
-                   '  word 1\n'               # fails
+                   '  word 1\n'
                    '  word 2\n'
                    'multiline string 4:\n'
-                   '  "word 1\\\n'
+                   '  "word 1\\\n'            # fails
                    '   word 2"\n',
-                   conf, problem1=(9, 3))
+                   conf, problem1=(12, 3))
+
+    def test_only_when_needed_single_quotes(self):
+        conf = ('quoted-strings: {quote-type: single,\n'
+                '                 required: only-when-needed}\n')
+
+        self.check('---\n'
+                   'boolean1: true\n'
+                   'number1: 123\n'
+                   'string1: foo\n'
+                   'string2: "foo"\n'                        # fails
+                   'string3: "true"\n'                       # fails
+                   'string4: "123"\n'                        # fails
+                   'string5: \'bar\'\n'                      # fails
+                   'string6: !!str genericstring\n'
+                   'string7: !!str 456\n'
+                   'string8: !!str "quotedgenericstring"\n'
+                   'binary: !!binary binstring\n'
+                   'integer: !!int intstring\n'
+                   'boolean2: !!bool boolstring\n'
+                   'boolean3: !!bool "quotedboolstring"\n'
+                   'block-seq:\n'
+                   '  - foo\n'
+                   '  - "foo"\n'                             # fails
+                   'flow-seq: [foo, "foo"]\n'                # fails
+                   'flow-map: {a: foo, b: "foo"}\n',         # fails
+                   conf, problem1=(5, 10), problem2=(6, 10), problem3=(7, 10),
+                   problem4=(8, 10), problem5=(18, 5), problem6=(19, 17),
+                   problem7=(20, 23))
+        self.check('---\n'
+                   'multiline string 1: |\n'
+                   '  line 1\n'
+                   '  line 2\n'
+                   'multiline string 2: >\n'
+                   '  word 1\n'
+                   '  word 2\n'
+                   'multiline string 3:\n'
+                   '  word 1\n'
+                   '  word 2\n'
+                   'multiline string 4:\n'
+                   '  "word 1\\\n'            # fails
+                   '   word 2"\n',
+                   conf, problem1=(12, 3))
+
+    def test_only_when_needed_corner_cases(self):
+        conf = 'quoted-strings: {required: only-when-needed}\n'
+
+        self.check('---\n'
+                   '- ""\n'
+                   '- "- item"\n'
+                   '- "key: value"\n'
+                   '- "%H:%M:%S"\n'
+                   '- "%wheel ALL=(ALL) NOPASSWD: ALL"\n'
+                   '- \'"quoted"\'\n'
+                   '- "\'foo\' == \'bar\'"\n'
+                   '- "\'Mac\' in ansible_facts.product_name"\n',
+                   conf)
+        self.check('---\n'
+                   'k1: ""\n'
+                   'k2: "- item"\n'
+                   'k3: "key: value"\n'
+                   'k4: "%H:%M:%S"\n'
+                   'k5: "%wheel ALL=(ALL) NOPASSWD: ALL"\n'
+                   'k6: \'"quoted"\'\n'
+                   'k7: "\'foo\' == \'bar\'"\n'
+                   'k8: "\'Mac\' in ansible_facts.product_name"\n',
+                   conf)
+
+        self.check('---\n'
+                   '- ---\n'
+                   '- "---"\n'                     # fails
+                   '- ----------\n'
+                   '- "----------"\n'              # fails
+                   '- :wq\n'
+                   '- ":wq"\n',                    # fails
+                   conf, problem1=(3, 3), problem2=(5, 3), problem3=(7, 3))
+        self.check('---\n'
+                   'k1: ---\n'
+                   'k2: "---"\n'                   # fails
+                   'k3: ----------\n'
+                   'k4: "----------"\n'            # fails
+                   'k5: :wq\n'
+                   'k6: ":wq"\n',                  # fails
+                   conf, problem1=(3, 5), problem2=(5, 5), problem3=(7, 5))
+
+    def test_only_when_needed_extras(self):
+        conf = ('quoted-strings:\n'
+                '  required: true\n'
+                '  extra-allowed: [^http://]\n')
+        self.assertRaises(config.YamlLintConfigError, self.check, '', conf)
+
+        conf = ('quoted-strings:\n'
+                '  required: true\n'
+                '  extra-required: [^http://]\n')
+        self.assertRaises(config.YamlLintConfigError, self.check, '', conf)
+
+        conf = ('quoted-strings:\n'
+                '  required: false\n'
+                '  extra-allowed: [^http://]\n')
+        self.assertRaises(config.YamlLintConfigError, self.check, '', conf)
+
+        conf = ('quoted-strings:\n'
+                '  required: true\n')
+        self.check('---\n'
+                   '- 123\n'
+                   '- "123"\n'
+                   '- localhost\n'                  # fails
+                   '- "localhost"\n'
+                   '- http://localhost\n'           # fails
+                   '- "http://localhost"\n'
+                   '- ftp://localhost\n'            # fails
+                   '- "ftp://localhost"\n',
+                   conf, problem1=(4, 3), problem2=(6, 3), problem3=(8, 3))
+
+        conf = ('quoted-strings:\n'
+                '  required: only-when-needed\n'
+                '  extra-allowed: [^ftp://]\n'
+                '  extra-required: [^http://]\n')
+        self.check('---\n'
+                   '- 123\n'
+                   '- "123"\n'
+                   '- localhost\n'
+                   '- "localhost"\n'                # fails
+                   '- http://localhost\n'           # fails
+                   '- "http://localhost"\n'
+                   '- ftp://localhost\n'
+                   '- "ftp://localhost"\n',
+                   conf, problem1=(5, 3), problem2=(6, 3))
+
+        conf = ('quoted-strings:\n'
+                '  required: false\n'
+                '  extra-required: [^http://, ^ftp://]\n')
+        self.check('---\n'
+                   '- 123\n'
+                   '- "123"\n'
+                   '- localhost\n'
+                   '- "localhost"\n'
+                   '- http://localhost\n'           # fails
+                   '- "http://localhost"\n'
+                   '- ftp://localhost\n'            # fails
+                   '- "ftp://localhost"\n',
+                   conf, problem1=(6, 3), problem2=(8, 3))
+
+        conf = ('quoted-strings:\n'
+                '  required: only-when-needed\n'
+                '  extra-allowed: [^ftp://, ";$", " "]\n')
+        self.check('---\n'
+                   '- localhost\n'
+                   '- "localhost"\n'                # fails
+                   '- ftp://localhost\n'
+                   '- "ftp://localhost"\n'
+                   '- i=i+1\n'
+                   '- "i=i+1"\n'                # fails
+                   '- i=i+2;\n'
+                   '- "i=i+2;"\n'
+                   '- foo\n'
+                   '- "foo"\n'                      # fails
+                   '- foo bar\n'
+                   '- "foo bar"\n',
+                   conf, problem1=(3, 3), problem2=(7, 3), problem3=(11, 3))

tests/rules/test_truthy.py

@@ -114,3 +114,33 @@ class TruthyTestCase(RuleTestCase):
                    'boolean5: !!bool off\n'
                    'boolean6: !!bool NO\n',
                    conf)
+
+    def test_check_keys_disabled(self):
+        conf = ('truthy:\n'
+                '  allowed-values: []\n'
+                '  check-keys: false\n'
+                'key-duplicates: disable\n')
+        self.check('---\n'
+                   'YES: 0\n'
+                   'Yes: 0\n'
+                   'yes: 0\n'
+                   'No: 0\n'
+                   'No: 0\n'
+                   'no: 0\n'
+                   'TRUE: 0\n'
+                   'True: 0\n'
+                   'true: 0\n'
+                   'FALSE: 0\n'
+                   'False: 0\n'
+                   'false: 0\n'
+                   'ON: 0\n'
+                   'On: 0\n'
+                   'on: 0\n'
+                   'OFF: 0\n'
+                   'Off: 0\n'
+                   'off: 0\n'
+                   'YES:\n'
+                   '  Yes:\n'
+                   '    yes:\n'
+                   '      on: 0\n',
+                   conf)

tests/test_cli.py

@@ -24,6 +24,7 @@ import os
 import pty
 import shutil
 import sys
+import tempfile
 import unittest
 
 from tests.common import build_temp_workspace
@@ -72,6 +73,9 @@ class CommandLineTestCase(unittest.TestCase):
             # file in dir
             'sub/ok.yaml': '---\n'
                            'key: value\n',
+            # directory that looks like a yaml file
+            'sub/directory.yaml/not-yaml.txt': '',
+            'sub/directory.yaml/empty.yml': '',
             # file in very nested dir
             's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml': '---\n'
                                                        'key: value\n'
@@ -91,6 +95,13 @@ class CommandLineTestCase(unittest.TestCase):
             # dos line endings yaml
             'dos.yml': '---\r\n'
                        'dos: true',
+            # different key-ordering by locale
+            'c.yaml': '---\n'
+                      'A: true\n'
+                      'a: true',
+            'en.yaml': '---\n'
+                       'a: true\n'
+                       'A: true'
         })
 
     @classmethod
@@ -104,9 +115,12 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'c.yaml'),
              os.path.join(self.wd, 'dos.yml'),
              os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'en.yaml'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/directory.yaml/empty.yml'),
              os.path.join(self.wd, 'sub/ok.yaml'),
              os.path.join(self.wd, 'warn.yaml')],
         )
@@ -131,6 +145,7 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively(items, conf)),
             [os.path.join(self.wd, '/etc/another/file'),
+             os.path.join(self.wd, 'sub/directory.yaml/empty.yml'),
              os.path.join(self.wd, 'sub/ok.yaml')],
         )
 
@@ -140,6 +155,8 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'c.yaml'),
+             os.path.join(self.wd, 'en.yaml'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
              os.path.join(self.wd, 'sub/ok.yaml'),
              os.path.join(self.wd, 'warn.yaml')]
@@ -151,7 +168,8 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'dos.yml'),
-             os.path.join(self.wd, 'empty.yml')]
+             os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'sub/directory.yaml/empty.yml')]
         )
 
         conf = config.YamlLintConfig('extends: default\n'
@@ -168,11 +186,15 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'c.yaml'),
              os.path.join(self.wd, 'dos.yml'),
              os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'en.yaml'),
              os.path.join(self.wd, 'no-yaml.json'),
              os.path.join(self.wd, 'non-ascii/éçäγλνπ¥/utf-8'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/directory.yaml/empty.yml'),
+             os.path.join(self.wd, 'sub/directory.yaml/not-yaml.txt'),
              os.path.join(self.wd, 'sub/ok.yaml'),
              os.path.join(self.wd, 'warn.yaml')]
         )
@@ -185,11 +207,15 @@ class CommandLineTestCase(unittest.TestCase):
         self.assertEqual(
             sorted(cli.find_files_recursively([self.wd], conf)),
             [os.path.join(self.wd, 'a.yaml'),
+             os.path.join(self.wd, 'c.yaml'),
              os.path.join(self.wd, 'dos.yml'),
              os.path.join(self.wd, 'empty.yml'),
+             os.path.join(self.wd, 'en.yaml'),
              os.path.join(self.wd, 'no-yaml.json'),
              os.path.join(self.wd, 'non-ascii/éçäγλνπ¥/utf-8'),
              os.path.join(self.wd, 's/s/s/s/s/s/s/s/s/s/s/s/s/s/s/file.yaml'),
+             os.path.join(self.wd, 'sub/directory.yaml/empty.yml'),
+             os.path.join(self.wd, 'sub/directory.yaml/not-yaml.txt'),
              os.path.join(self.wd, 'sub/ok.yaml'),
              os.path.join(self.wd, 'warn.yaml')]
         )
@@ -285,6 +311,58 @@ class CommandLineTestCase(unittest.TestCase):
             cli.run((os.path.join(self.wd, 'a.yaml'), ))
         self.assertEqual(ctx.returncode, 1)
 
+    def test_run_with_user_yamllint_config_file_in_env(self):
+        self.addCleanup(os.environ.__delitem__, 'YAMLLINT_CONFIG_FILE')
+
+        with tempfile.NamedTemporaryFile('w') as f:
+            os.environ['YAMLLINT_CONFIG_FILE'] = f.name
+            f.write('rules: {trailing-spaces: disable}')
+            f.flush()
+            with RunContext(self) as ctx:
+                cli.run((os.path.join(self.wd, 'a.yaml'), ))
+            self.assertEqual(ctx.returncode, 0)
+
+        with tempfile.NamedTemporaryFile('w') as f:
+            os.environ['YAMLLINT_CONFIG_FILE'] = f.name
+            f.write('rules: {trailing-spaces: enable}')
+            f.flush()
+            with RunContext(self) as ctx:
+                cli.run((os.path.join(self.wd, 'a.yaml'), ))
+            self.assertEqual(ctx.returncode, 1)
+
+    def test_run_with_locale(self):
+        self.addCleanup(locale.setlocale, locale.LC_ALL, 'C.UTF-8')
+        try:
+            locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
+        except locale.Error:
+            self.skipTest('locale en_US.UTF-8 not available')
+
+        # C + en.yaml should fail
+        with RunContext(self) as ctx:
+            cli.run(('-d', 'rules: { key-ordering: enable }',
+                     os.path.join(self.wd, 'en.yaml')))
+        self.assertEqual(ctx.returncode, 1)
+
+        # en_US + en.yaml should pass
+        with RunContext(self) as ctx:
+            cli.run(('-d', 'locale: en_US.UTF-8\n'
+                           'rules: { key-ordering: enable }',
+                     os.path.join(self.wd, 'en.yaml')))
+        self.assertEqual(ctx.returncode, 0)
+
+        # en_US + c.yaml should fail
+        with RunContext(self) as ctx:
+            cli.run(('-d', 'locale: en_US.UTF-8\n'
+                           'rules: { key-ordering: enable }',
+                     os.path.join(self.wd, 'c.yaml')))
+        self.assertEqual(ctx.returncode, 1)
+
+        # C + c.yaml should pass
+        with RunContext(self) as ctx:
+            cli.run(('-d', 'rules: { key-ordering: enable }',
+                    os.path.join(self.wd, 'c.yaml')))
+        self.assertEqual(ctx.returncode, 0)
+
     def test_run_version(self):
         with RunContext(self) as ctx:
             cli.run(('--version', ))
@@ -343,15 +421,6 @@ class CommandLineTestCase(unittest.TestCase):
     def test_run_non_ascii_file(self):
         path = os.path.join(self.wd, 'non-ascii', 'éçäγλνπ¥', 'utf-8')
 
-        # Make sure the default localization conditions on this "system"
-        # support UTF-8 encoding.
-        loc = locale.getlocale()
-        try:
-            locale.setlocale(locale.LC_ALL, 'C.UTF-8')
-        except locale.Error:
-            locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
-        self.addCleanup(locale.setlocale, locale.LC_ALL, loc)
-
         with RunContext(self) as ctx:
             cli.run(('-f', 'parsable', path))
         self.assertEqual((ctx.returncode, ctx.stdout, ctx.stderr), (0, '', ''))

yamllint/__init__.py

@@ -22,7 +22,7 @@ indentation, etc."""
 
 
 APP_NAME = 'yamllint'
-APP_VERSION = '1.21.0'
+APP_VERSION = '1.24.0'
 APP_DESCRIPTION = __doc__
 
 __author__ = u'Adrien Vergé'

yamllint/cli.py

@@ -18,6 +18,7 @@ from __future__ import print_function
 
 import argparse
 import io
+import locale
 import os
 import platform
 import sys
@@ -144,8 +145,11 @@ def run(argv=None):
 
     args = parser.parse_args(argv)
 
+    if 'YAMLLINT_CONFIG_FILE' in os.environ:
+        user_global_config = os.path.expanduser(
+            os.environ['YAMLLINT_CONFIG_FILE'])
     # User-global config is supposed to be in ~/.config/yamllint/config
-    if 'XDG_CONFIG_HOME' in os.environ:
+    elif 'XDG_CONFIG_HOME' in os.environ:
         user_global_config = os.path.join(
             os.environ['XDG_CONFIG_HOME'], 'yamllint', 'config')
     else:
@@ -172,6 +176,8 @@ def run(argv=None):
         print(e, file=sys.stderr)
         sys.exit(-1)
 
+    locale.setlocale(locale.LC_ALL, conf.locale)
+
     max_level = 0
 
     for file in find_files_recursively(args.files, conf):

yamllint/config.py

@@ -35,6 +35,8 @@ class YamlLintConfig(object):
         self.yaml_files = pathspec.PathSpec.from_lines(
             'gitwildmatch', ['*.yaml', '*.yml', '.yamllint'])
 
+        self.locale = 'C.UTF-8'
+
         if file is not None:
             with open(file) as f:
                 content = f.read()
@@ -46,7 +48,7 @@ class YamlLintConfig(object):
         return self.ignore and self.ignore.match_file(filepath)
 
     def is_yaml_file(self, filepath):
-        return self.yaml_files.match_file(filepath)
+        return self.yaml_files.match_file(os.path.basename(filepath))
 
     def enabled_rules(self, filepath):
         return [yamllint.rules.get(id) for id, val in self.rules.items()
@@ -111,6 +113,12 @@ class YamlLintConfig(object):
             self.yaml_files = pathspec.PathSpec.from_lines('gitwildmatch',
                                                            conf['yaml-files'])
 
+        if 'locale' in conf:
+            if not isinstance(conf['locale'], str):
+                raise YamlLintConfigError(
+                    'invalid config: locale should be a string')
+            self.locale = conf['locale']
+
     def validate(self):
         for id in self.rules:
             try:
@@ -157,11 +165,12 @@ def validate_rule_conf(rule, conf):
                     raise YamlLintConfigError(
                         'invalid config: option "%s" of "%s" should be in %s'
                         % (optkey, rule.ID, options[optkey]))
-            # Example: CONF = {option: ['flag1', 'flag2']}
+            # Example: CONF = {option: ['flag1', 'flag2', int]}
-            #          → {option: [flag1]}      → {option: [flag1, flag2]}
+            #          → {option: [flag1]}      → {option: [42, flag1, flag2]}
             elif isinstance(options[optkey], list):
                 if (type(conf[optkey]) is not list or
-                        any(flag not in options[optkey]
+                        any(flag not in options[optkey] and
+                            type(flag) not in options[optkey]
                             for flag in conf[optkey])):
                     raise YamlLintConfigError(
                         ('invalid config: option "%s" of "%s" should only '
@@ -177,6 +186,12 @@ def validate_rule_conf(rule, conf):
         for optkey in options:
             if optkey not in conf:
                 conf[optkey] = options_default[optkey]
+
+        if hasattr(rule, 'VALIDATE'):
+            res = rule.VALIDATE(conf)
+            if res:
+                raise YamlLintConfigError('invalid config: %s: %s' %
+                                          (rule.ID, res))
     else:
         raise YamlLintConfigError(('invalid config: rule "%s": should be '
                                    'either "enable", "disable" or a dict')

yamllint/rules/comments.py

@@ -97,7 +97,9 @@ def check(conf, comment):
                     comment.column_no == 1 and
                     re.match(r'^!\S', comment.buffer[text_start:])):
                 return
-            elif comment.buffer[text_start] not in (' ', '\n', '\0'):
+            # We can test for both \r and \r\n just by checking first char
+            # \r itself is a valid newline on some older OS.
+            elif comment.buffer[text_start] not in {' ', '\n', '\r', '\x00'}:
                 column = comment.column_no + text_start - comment.pointer
                 yield LintProblem(comment.line_no,
                                   column,

yamllint/rules/key_ordering.py

@@ -16,8 +16,10 @@
 
 """
 Use this rule to enforce alphabetical ordering of keys in mappings. The sorting
-order uses the Unicode code point number. As a result, the ordering is
+order uses the Unicode code point number as a default. As a result, the
-case-sensitive and not accent-friendly (see examples below).
+ordering is case-sensitive and not accent-friendly (see examples below).
+This can be changed by setting the global ``locale`` option.  This allows to
+sort case and accents properly.
 
 .. rubric:: Examples
 
@@ -63,8 +65,24 @@ case-sensitive and not accent-friendly (see examples below).
 
     - haïr: true
       hais: true
+
+#. With global option ``locale: "en_US.UTF-8"`` and rule ``key-ordering: {}``
+
+   as opposed to before, the following code snippet would now **PASS**:
+   ::
+
+    - t-shirt: 1
+      T-shirt: 2
+      t-shirts: 3
+      T-shirts: 4
+    - hair: true
+      haïr: true
+      hais: true
+      haïssable: true
 """
 
+from locale import strcoll
+
 import yaml
 
 from yamllint.linter import LintProblem
@@ -101,7 +119,8 @@ def check(conf, token, prev, next, nextnext, context):
         # This check is done because KeyTokens can be found inside flow
         # sequences... strange, but allowed.
         if len(context['stack']) > 0 and context['stack'][-1].type == MAP:
-            if any(next.value < key for key in context['stack'][-1].keys):
+            if any(strcoll(next.value, key) < 0
+                   for key in context['stack'][-1].keys):
                 yield LintProblem(
                     next.start_mark.line + 1, next.start_mark.column + 1,
                     'wrong ordering of key "%s" in mapping' % next.value)

yamllint/rules/quoted_strings.py

@@ -26,6 +26,11 @@ used.
 * ``required`` defines whether using quotes in string values is required
   (``true``, default) or not (``false``), or only allowed when really needed
   (``only-when-needed``).
+* ``extra-required`` is a list of PCRE regexes to force string values to be
+  quoted, if they match any regex. This option can only be used with
+  ``required: false`` and  ``required: only-when-needed``.
+* ``extra-allowed`` is a list of PCRE regexes to allow quoted string values,
+  even if ``required: only-when-needed`` is set.
 
 **Note**: Multi-line strings (with ``|`` or ``>``) will not be checked.
 
@@ -63,8 +68,44 @@ used.
    ::
 
     foo: 'bar'
+
+#. With ``quoted-strings: {required: false, extra-required: [^http://,
+   ^ftp://]}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    - localhost
+    - "localhost"
+    - "http://localhost"
+    - "ftp://localhost"
+
+   the following code snippet would **FAIL**:
+   ::
+
+    - http://localhost
+    - ftp://localhost
+
+#. With ``quoted-strings: {required: only-when-needed, extra-allowed:
+   [^http://, ^ftp://], extra-required: [QUOTED]}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    - localhost
+    - "http://localhost"
+    - "ftp://localhost"
+    - "this is a string that needs to be QUOTED"
+
+   the following code snippet would **FAIL**:
+   ::
+
+    - "localhost"
+    - this is a string that needs to be QUOTED
 """
 
+import re
+
 import yaml
 
 from yamllint.linter import LintProblem
@@ -72,24 +113,55 @@ from yamllint.linter import LintProblem
 ID = 'quoted-strings'
 TYPE = 'token'
 CONF = {'quote-type': ('any', 'single', 'double'),
-        'required': (True, False, 'only-when-needed')}
+        'required': (True, False, 'only-when-needed'),
+        'extra-required': [str],
+        'extra-allowed': [str]}
 DEFAULT = {'quote-type': 'any',
-           'required': True}
+           'required': True,
+           'extra-required': [],
+           'extra-allowed': []}
+
+
+def VALIDATE(conf):
+    if conf['required'] is True and len(conf['extra-allowed']) > 0:
+        return 'cannot use both "required: true" and "extra-allowed"'
+    if conf['required'] is True and len(conf['extra-required']) > 0:
+        return 'cannot use both "required: true" and "extra-required"'
+    if conf['required'] is False and len(conf['extra-allowed']) > 0:
+        return 'cannot use both "required: false" and "extra-allowed"'
+
 
 DEFAULT_SCALAR_TAG = u'tag:yaml.org,2002:str'
-START_TOKENS = {'#', '*', '!', '?', '@', '`', '&',
-                ',', '-', '{', '}', '[', ']', ':'}
 
 
-def quote_match(quote_type, token_style):
+def _quote_match(quote_type, token_style):
     return ((quote_type == 'any') or
             (quote_type == 'single' and token_style == "'") or
             (quote_type == 'double' and token_style == '"'))
 
 
+def _quotes_are_needed(string):
+    loader = yaml.BaseLoader('key: ' + string)
+    # Remove the 5 first tokens corresponding to 'key: ' (StreamStartToken,
+    # BlockMappingStartToken, KeyToken, ScalarToken(value=key), ValueToken)
+    for _ in range(5):
+        loader.get_token()
+    try:
+        a, b = loader.get_token(), loader.get_token()
+        if (isinstance(a, yaml.ScalarToken) and a.style is None and
+                isinstance(b, yaml.BlockEndToken)):
+            return False
+        return True
+    except yaml.scanner.ScannerError:
+        return True
+
+
 def check(conf, token, prev, next, nextnext, context):
     if not (isinstance(token, yaml.tokens.ScalarToken) and
-            isinstance(prev, (yaml.ValueToken, yaml.TagToken))):
+            isinstance(prev, (yaml.BlockEntryToken, yaml.FlowEntryToken,
+                              yaml.FlowSequenceStartToken, yaml.TagToken,
+                              yaml.ValueToken))):
+
         return
 
     # Ignore explicit types, e.g. !!str testtest or !!int 42
@@ -108,36 +180,48 @@ def check(conf, token, prev, next, nextnext, context):
         return
 
     quote_type = conf['quote-type']
-    required = conf['required']
-
-    # Completely relaxed about quotes (same as the rule being disabled)
-    if required is False and quote_type == 'any':
-        return
 
     msg = None
-    if required is True:
+    if conf['required'] is True:
 
         # Quotes are mandatory and need to match config
-        if token.style is None or not quote_match(quote_type, token.style):
+        if token.style is None or not _quote_match(quote_type, token.style):
-            msg = "string value is not quoted with %s quotes" % (quote_type)
+            msg = "string value is not quoted with %s quotes" % quote_type
 
-    elif required is False:
+    elif conf['required'] is False:
 
         # Quotes are not mandatory but when used need to match config
-        if token.style and not quote_match(quote_type, token.style):
+        if token.style and not _quote_match(quote_type, token.style):
-            msg = "string value is not quoted with %s quotes" % (quote_type)
+            msg = "string value is not quoted with %s quotes" % quote_type
 
-    elif not token.plain:
+        elif not token.style:
+            is_extra_required = any(re.search(r, token.value)
+                                    for r in conf['extra-required'])
+            if is_extra_required:
+                msg = "string value is not quoted"
 
-        # Quotes are disallowed when not needed
+    elif conf['required'] == 'only-when-needed':
-        if (tag == DEFAULT_SCALAR_TAG and token.value
+
-                and token.value[0] not in START_TOKENS):
+        # Quotes are not strictly needed here
-            msg = "string value is redundantly quoted with %s quotes" % (
+        if (token.style and tag == DEFAULT_SCALAR_TAG and token.value and
-                quote_type)
+                not _quotes_are_needed(token.value)):
+            is_extra_required = any(re.search(r, token.value)
+                                    for r in conf['extra-required'])
+            is_extra_allowed = any(re.search(r, token.value)
+                                   for r in conf['extra-allowed'])
+            if not (is_extra_required or is_extra_allowed):
+                msg = "string value is redundantly quoted with %s quotes" % (
+                    quote_type)
 
         # But when used need to match config
-        elif token.style and not quote_match(quote_type, token.style):
+        elif token.style and not _quote_match(quote_type, token.style):
-            msg = "string value is not quoted with %s quotes" % (quote_type)
+            msg = "string value is not quoted with %s quotes" % quote_type
+
+        elif not token.style:
+            is_extra_required = len(conf['extra-required']) and any(
+                re.search(r, token.value) for r in conf['extra-required'])
+            if is_extra_required:
+                msg = "string value is not quoted"
 
     if msg is not None:
         yield LintProblem(

yamllint/rules/truthy.py

@@ -30,6 +30,9 @@ This can be useful to prevent surprises from YAML parsers transforming
   ``'False'``, ``'false'``, ``'YES'``, ``'Yes'``, ``'yes'``, ``'NO'``,
   ``'No'``, ``'no'``, ``'ON'``, ``'On'``, ``'on'``, ``'OFF'``, ``'Off'``,
   ``'off'``.
+* ``check-keys`` disables verification for keys in mappings. By default,
+  ``truthy`` rule applies to both keys and values. Set this option to ``false``
+  to prevent this.
 
 .. rubric:: Examples
 
@@ -92,6 +95,22 @@ This can be useful to prevent surprises from YAML parsers transforming
     - false
     - on
     - off
+
+#. With ``truthy: {check-keys: false}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    yes:  1
+    on:   2
+    true: 3
+
+   the following code snippet would **FAIL**:
+   ::
+
+    yes:  Yes
+    on:   On
+    true: True
 """
 
 import yaml
@@ -109,14 +128,18 @@ TRUTHY = ['YES', 'Yes', 'yes',
 
 ID = 'truthy'
 TYPE = 'token'
-CONF = {'allowed-values': list(TRUTHY)}
+CONF = {'allowed-values': list(TRUTHY), 'check-keys': bool}
-DEFAULT = {'allowed-values': ['true', 'false']}
+DEFAULT = {'allowed-values': ['true', 'false'], 'check-keys': True}
 
 
 def check(conf, token, prev, next, nextnext, context):
     if prev and isinstance(prev, yaml.tokens.TagToken):
         return
 
+    if (not conf['check-keys'] and isinstance(prev, yaml.tokens.KeyToken) and
+            isinstance(token, yaml.tokens.ScalarToken)):
+        return
+
     if isinstance(token, yaml.tokens.ScalarToken):
         if (token.value in (set(TRUTHY) - set(conf['allowed-values'])) and
                 token.style is None):