yamllint version 1.12.1

Original implementation was completely broken. Documentation and actual
behavior were different. Numbers and booleans were detected as wrong, as
well as explicit types.

Fixes #136 and #130.

.gitignore

@@ -3,3 +3,4 @@ __pycache__
 /docs/_build
 /dist
 /yamllint.egg-info
+/build

.pre-commit-hooks.yaml

@@ -1,7 +1,7 @@
 ---
 
 # For use with pre-commit.
-# See usage instructions at http://pre-commit.com
+# See usage instructions at https://pre-commit.com
 
 - id: yamllint
   name: yamllint

.travis.yml

@@ -9,13 +9,19 @@ python:
   - 3.6
   - nightly
 install:
-  - pip install pyyaml flake8 flake8-import-order coveralls sphinx
+  - pip install pyyaml flake8 flake8-import-order
   - if [[ $TRAVIS_PYTHON_VERSION == 2.6 ]]; then pip install unittest2; fi
+  - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then pip install coveralls; fi
+  - if [[ $TRAVIS_PYTHON_VERSION != 2* ]]; then pip install sphinx; fi
   - pip install .
 script:
   - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then flake8 .; fi
   - yamllint --strict $(git ls-files '*.yaml' '*.yml')
-  - coverage run --source=yamllint setup.py test
+  - if [[ $TRAVIS_PYTHON_VERSION != 2.6 ]]; then
+      coverage run --source=yamllint setup.py test;
+    else
+      python setup.py test;
+    fi
   - if [[ $TRAVIS_PYTHON_VERSION != 2* ]]; then
       python setup.py build_sphinx;
     fi

CHANGELOG.rst

@@ -1,6 +1,32 @@
 Changelog
 =========
 
+1.12.1 (2018-10-17)
+-------------------
+
+- Fix the `quoted-strings` rule, broken implementation
+- Fix missing documentation for the `quoted-strings` rule
+
+1.12.0 (2018-10-04)
+-------------------
+
+- Add a new `quoted-strings` rule
+- Update installation documentation for pip, CentOS, Debian, Ubuntu, Mac OS
+
+1.11.1 (2018-04-06)
+-------------------
+
+- Handle merge keys (`<<`) in the `key-duplicates` rule
+- Update documentation about pre-commit
+- Make examples for `ignore` rule clearer
+- Clarify documentation on the 'truthy' rule
+- Fix crash in parser due to a change in PyYAML > 3.12
+
+1.11.0 (2018-02-21)
+-------------------
+
+- Add a new `octal-values` rule
+
 1.10.0 (2017-11-05)
 -------------------
 

README.rst

@@ -38,7 +38,8 @@ Screenshot
 Installation
 ^^^^^^^^^^^^
 
-On Fedora / CentOS:
+On Fedora / CentOS (note: `EPEL <https://fedoraproject.org/wiki/EPEL>`_ is
+required on CentOS):
 
 .. code:: bash
 
@@ -50,11 +51,17 @@ On Debian 8+ / Ubuntu 16.04+:
 
  sudo apt-get install yamllint
 
+On Mac OS 10.11+:
+
+.. code:: bash
+
+ brew install yamllint
+
 Alternatively using pip, the Python package manager:
 
 .. code:: bash
 
- sudo pip install yamllint
+ pip install --user yamllint
 
 Usage
 ^^^^^

docs/configuration.rst

@@ -129,7 +129,7 @@ You can either totally ignore files (they won't be looked at):
 
  ignore: |
    /this/specific/file.yaml
-   /all/this/directory/
+   all/this/directory/
    *.template.yaml
 
 or ignore paths only for specific rules:
@@ -167,4 +167,4 @@ Here is a more complex example:
    trailing-spaces:
      ignore: |
        *.ignore-trailing-spaces.yaml
-       /ascii-art/*
+       ascii-art/*

docs/quickstart.rst

@@ -16,25 +16,24 @@ On Debian 8+ / Ubuntu 16.04+:
 
  sudo apt-get install yamllint
 
-On older Debian / Ubuntu versions:
+On Mac OS 10.11+:
 
 .. code:: bash
 
- sudo add-apt-repository -y ppa:adrienverge/ppa && sudo apt-get update
- sudo apt-get install yamllint
+ brew install yamllint
 
 Alternatively using pip, the Python package manager:
 
 .. code:: bash
 
- sudo pip install yamllint
+ pip install --user yamllint
 
 If you prefer installing from source, you can run, from the source directory:
 
 .. code:: bash
 
  python setup.py sdist
- sudo pip install dist/yamllint-*.tar.gz
+ pip install --user dist/yamllint-*.tar.gz
 
 Running yamllint
 ----------------

docs/rules.rst

@@ -99,6 +99,16 @@ new-lines
 
 .. automodule:: yamllint.rules.new_lines
 
+octal-values
+------------
+
+.. automodule:: yamllint.rules.octal_values
+
+quoted-strings
+--------------
+
+.. automodule:: yamllint.rules.quoted_strings
+
 trailing-spaces
 ---------------
 

setup.cfg

@@ -3,6 +3,7 @@ universal = 1
 
 [flake8]
 import-order-style = pep8
+application-import-names = yamllint
 
 [build_sphinx]
 all-files = 1

tests/rules/test_indentation.py

@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from tests.common import RuleTestCase
+
 from yamllint.parser import token_or_comment_generator, Comment
 from yamllint.rules.indentation import check
 

tests/rules/test_key_duplicates.py

@@ -78,6 +78,15 @@ class KeyDuplicatesTestCase(RuleTestCase):
                    '    duplicates with\n'
                    '    many styles\n'
                    ': 1\n', conf)
+        self.check('---\n'
+                   'Merge Keys are OK:\n'
+                   'anchor_one: &anchor_one\n'
+                   '  one: one\n'
+                   'anchor_two: &anchor_two\n'
+                   '  two: two\n'
+                   'anchor_reference:\n'
+                   '  <<: *anchor_one\n'
+                   '  <<: *anchor_two\n', conf)
 
     def test_enabled(self):
         conf = 'key-duplicates: enable'
@@ -147,6 +156,15 @@ class KeyDuplicatesTestCase(RuleTestCase):
                    ': 1\n', conf,
                    problem1=(3, 1), problem2=(4, 1), problem3=(5, 3),
                    problem4=(7, 3))
+        self.check('---\n'
+                   'Merge Keys are OK:\n'
+                   'anchor_one: &anchor_one\n'
+                   '  one: one\n'
+                   'anchor_two: &anchor_two\n'
+                   '  two: two\n'
+                   'anchor_reference:\n'
+                   '  <<: *anchor_one\n'
+                   '  <<: *anchor_two\n', conf)
 
     def test_key_tokens_in_flow_sequences(self):
         conf = 'key-duplicates: enable'

tests/rules/test_octal_values.py

@@ -0,0 +1,72 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from tests.common import RuleTestCase
+
+
+class OctalValuesTestCase(RuleTestCase):
+    rule_id = 'octal-values'
+
+    def test_disabled(self):
+        conf = ('octal-values: disable\n'
+                'new-line-at-end-of-file: disable\n'
+                'document-start: disable\n')
+        self.check('user-city: 010', conf)
+        self.check('user-city: 0o10', conf)
+
+    def test_implicit_octal_values(self):
+        conf = ('octal-values: {forbid-implicit-octal: true}\n'
+                'new-line-at-end-of-file: disable\n'
+                'document-start: disable\n')
+        self.check('user-city: 010', conf, problem=(1, 15))
+        self.check('user-city: abc', conf)
+        self.check('user-city: 010,0571', conf)
+        self.check("user-city: '010'", conf)
+        self.check('user-city: "010"', conf)
+        self.check('user-city:\n'
+                   '  - 010', conf, problem=(2, 8))
+        self.check('user-city: [010]', conf, problem=(1, 16))
+        self.check('user-city: {beijing: 010}', conf, problem=(1, 25))
+        self.check('explicit-octal: 0o10', conf)
+        self.check('not-number: 0abc', conf)
+        self.check('zero: 0', conf)
+        self.check('hex-value: 0x10', conf)
+        self.check('number-values:\n'
+                   '  - 0.10\n'
+                   '  - .01\n'
+                   '  - 0e3\n', conf)
+
+    def test_explicit_octal_values(self):
+        conf = ('octal-values: {forbid-explicit-octal: true}\n'
+                'new-line-at-end-of-file: disable\n'
+                'document-start: disable\n')
+        self.check('user-city: 0o10', conf, problem=(1, 16))
+        self.check('user-city: abc', conf)
+        self.check('user-city: 0o10,0571', conf)
+        self.check("user-city: '0o10'", conf)
+        self.check('user-city:\n'
+                   '  - 0o10', conf, problem=(2, 9))
+        self.check('user-city: [0o10]', conf, problem=(1, 17))
+        self.check('user-city: {beijing: 0o10}', conf, problem=(1, 26))
+        self.check('implicit-octal: 010', conf)
+        self.check('not-number: 0oabc', conf)
+        self.check('zero: 0', conf)
+        self.check('hex-value: 0x10', conf)
+        self.check('number-values:\n'
+                   '  - 0.10\n'
+                   '  - .01\n'
+                   '  - 0e3\n', conf)
+        self.check('user-city: "010"', conf)

tests/rules/test_quoted_strings.py

@@ -0,0 +1,125 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2018 ClearScore
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from tests.common import RuleTestCase
+
+
+class QuotedTestCase(RuleTestCase):
+    rule_id = 'quoted-strings'
+
+    def test_disabled(self):
+        conf = 'quoted-strings: disable'
+        self.check('---\n'
+                   'foo: bar\n', conf)
+        self.check('---\n'
+                   'foo: "bar"\n', conf)
+        self.check('---\n'
+                   'foo: \'bar\'\n', conf)
+        self.check('---\n'
+                   'bar: 123\n', conf)
+
+    def test_quote_type_any(self):
+        conf = 'quoted-strings: {quote-type: any}\n'
+        self.check('---\n'
+                   'boolean1: true\n'
+                   'number1: 123\n'
+                   'string1: foo\n'                          # fails
+                   'string2: "foo"\n'
+                   'string3: \'bar\'\n'
+                   'string4: !!str genericstring\n'
+                   'string5: !!str 456\n'
+                   'string6: !!str "quotedgenericstring"\n'
+                   'binary: !!binary binstring\n'
+                   'integer: !!int intstring\n'
+                   'boolean2: !!bool boolstring\n'
+                   'boolean3: !!bool "quotedboolstring"\n',
+                   conf, problem=(4, 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'
+                   '   word 2"\n',
+                   conf, problem1=(9, 3))
+
+    def test_quote_type_single(self):
+        conf = 'quoted-strings: {quote-type: single}\n'
+        self.check('---\n'
+                   'boolean1: true\n'
+                   'number1: 123\n'
+                   'string1: foo\n'                          # fails
+                   'string2: "foo"\n'                        # fails
+                   'string3: \'bar\'\n'
+                   'string4: !!str genericstring\n'
+                   'string5: !!str 456\n'
+                   'string6: !!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))
+        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'
+                   '   word 2"\n',
+                   conf, problem1=(9, 3), problem2=(12, 3))
+
+    def test_quote_type_double(self):
+        conf = 'quoted-strings: {quote-type: double}\n'
+        self.check('---\n'
+                   'boolean1: true\n'
+                   'number1: 123\n'
+                   'string1: foo\n'                          # fails
+                   'string2: "foo"\n'
+                   'string3: \'bar\'\n'                      # fails
+                   'string4: !!str genericstring\n'
+                   'string5: !!str 456\n'
+                   'string6: !!str "quotedgenericstring"\n'
+                   'binary: !!binary binstring\n'
+                   'integer: !!int intstring\n'
+                   'boolean2: !!bool boolstring\n'
+                   'boolean3: !!bool "quotedboolstring"\n',
+                   conf, problem1=(4, 10), problem2=(6, 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'
+                   '   word 2"\n',
+                   conf, problem1=(9, 3))

tests/test_cli.py

@@ -30,10 +30,10 @@ try:
 except AssertionError:
     import unittest2 as unittest
 
-from yamllint import cli
-
 from tests.common import build_temp_workspace
 
+from yamllint import cli
+
 
 @unittest.skipIf(sys.version_info < (2, 7), 'Python 2.6 not supported')
 class CommandLineTestCase(unittest.TestCase):

tests/test_config.py

@@ -27,11 +27,11 @@ try:
 except AssertionError:
     import unittest2 as unittest
 
+from tests.common import build_temp_workspace
+
 from yamllint import cli
 from yamllint import config
 
-from tests.common import build_temp_workspace
-
 
 class SimpleConfigTestCase(unittest.TestCase):
     def test_parse_config(self):

yamllint/__init__.py

@@ -22,7 +22,7 @@ indentation, etc."""
 
 
 APP_NAME = 'yamllint'
-APP_VERSION = '1.10.0'
+APP_VERSION = '1.12.1'
 APP_DESCRIPTION = __doc__
 
 __author__ = u'Adrien Vergé'

yamllint/conf/default.yaml

@@ -32,6 +32,7 @@ rules:
     max: 2
     max-start: 0
     max-end: 0
+  quoted-strings: disable
   empty-values:
     forbid-in-block-mappings: false
     forbid-in-flow-mappings: false
@@ -50,6 +51,9 @@ rules:
   new-line-at-end-of-file: enable
   new-lines:
     type: unix
+  octal-values:
+    forbid-implicit-octal: false
+    forbid-explicit-octal: false
   trailing-spaces: enable
   truthy:
     level: warning

yamllint/parser.py

@@ -125,7 +125,8 @@ def token_or_comment_generator(buffer):
         curr = yaml_loader.get_token()
         while curr is not None:
             next = yaml_loader.get_token()
-            nextnext = yaml_loader.peek_token()
+            nextnext = (yaml_loader.peek_token()
+                        if yaml_loader.check_token() else None)
 
             yield Token(curr.start_mark.line + 1, curr, prev, next, nextnext)
 

yamllint/rules/__init__.py

@@ -32,6 +32,8 @@ from yamllint.rules import (
     line_length,
     new_line_at_end_of_file,
     new_lines,
+    octal_values,
+    quoted_strings,
     trailing_spaces,
     truthy,
 )
@@ -54,6 +56,8 @@ _RULES = {
     line_length.ID: line_length,
     new_line_at_end_of_file.ID: new_line_at_end_of_file,
     new_lines.ID: new_lines,
+    octal_values.ID: octal_values,
+    quoted_strings.ID: quoted_strings,
     trailing_spaces.ID: trailing_spaces,
     truthy.ID: truthy,
 }

yamllint/rules/key_duplicates.py

@@ -91,7 +91,9 @@ 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 next.value in context['stack'][-1].keys:
+            if (next.value in context['stack'][-1].keys and
+                    # `<<` is "merge key", see http://yaml.org/type/merge.html
+                    next.value != '<<'):
                 yield LintProblem(
                     next.start_mark.line + 1, next.start_mark.column + 1,
                     'duplication of key "%s" in mapping' % next.value)

yamllint/rules/octal_values.py

@@ -0,0 +1,93 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2017 ScienJus
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Use this rule to prevent values with octal numbers. In YAML, numbers that
+start with ``0`` are interpreted as octal, but this is not always wanted.
+For instance ``010`` is the city code of Beijing, and should not be
+converted to ``8``.
+
+.. rubric:: Examples
+
+#. With ``octal-values: {forbid-implicit-octal: true}``
+
+   the following code snippets would **PASS**:
+   ::
+
+    user:
+      city-code: '010'
+
+   the following code snippets would **PASS**:
+   ::
+
+    user:
+      city-code: 010,021
+
+   the following code snippets would **FAIL**:
+   ::
+
+    user:
+      city-code: 010
+
+#. With ``octal-values: {forbid-explicit-octal: true}``
+
+   the following code snippets would **PASS**:
+   ::
+
+    user:
+      city-code: '0o10'
+
+   the following code snippets would **FAIL**:
+   ::
+
+    user:
+      city-code: 0o10
+"""
+
+import yaml
+
+from yamllint.linter import LintProblem
+
+
+ID = 'octal-values'
+TYPE = 'token'
+CONF = {'forbid-implicit-octal': bool,
+        'forbid-explicit-octal': bool}
+
+
+def check(conf, token, prev, next, nextnext, context):
+    if prev and isinstance(prev, yaml.tokens.TagToken):
+        return
+
+    if conf['forbid-implicit-octal']:
+        if isinstance(token, yaml.tokens.ScalarToken):
+            if not token.style:
+                val = token.value
+                if val.isdigit() and len(val) > 1 and val[0] == '0':
+                    yield LintProblem(
+                        token.start_mark.line + 1, token.end_mark.column + 1,
+                        'forbidden implicit octal value "%s"' %
+                        token.value)
+
+    if conf['forbid-explicit-octal']:
+        if isinstance(token, yaml.tokens.ScalarToken):
+            if not token.style:
+                val = token.value
+                if len(val) > 2 and val[:2] == '0o' and val[2:].isdigit():
+                    yield LintProblem(
+                        token.start_mark.line + 1, token.end_mark.column + 1,
+                        'forbidden explicit octal value "%s"' %
+                        token.value)

yamllint/rules/quoted_strings.py

@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# Copyright (C) 2018 ClearScore
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Use this rule to forbid any string values that are not quoted.
+You can also enforce the type of the quote used using the ``quote-type`` option
+(``single``, ``double`` or ``any``).
+
+**Note**: Multi-line strings (with ``|`` or ``>``) will not be checked.
+
+.. rubric:: Examples
+
+#. With ``quoted-strings: {quote-type: any}``
+
+   the following code snippet would **PASS**:
+   ::
+
+    foo: "bar"
+    bar: 'foo'
+    number: 123
+    boolean: true
+
+   the following code snippet would **FAIL**:
+   ::
+
+    foo: bar
+"""
+
+import yaml
+
+from yamllint.linter import LintProblem
+
+ID = 'quoted-strings'
+TYPE = 'token'
+CONF = {'quote-type': ('any', 'single', 'double')}
+
+
+def check(conf, token, prev, next, nextnext, context):
+    quote_type = conf['quote-type']
+
+    if (isinstance(token, yaml.tokens.ScalarToken) and
+            isinstance(prev, (yaml.ValueToken, yaml.TagToken))):
+        # Ignore explicit types, e.g. !!str testtest or !!int 42
+        if (prev and isinstance(prev, yaml.tokens.TagToken) and
+                prev.value[0] == '!!'):
+            return
+
+        # Ignore numbers, booleans, etc.
+        resolver = yaml.resolver.Resolver()
+        if resolver.resolve(yaml.nodes.ScalarNode, token.value,
+                            (True, False)) != 'tag:yaml.org,2002:str':
+            return
+
+        # Ignore multi-line strings
+        if (not token.plain) and (token.style == "|" or token.style == ">"):
+            return
+
+        if ((quote_type == 'single' and token.style != "'") or
+                (quote_type == 'double' and token.style != '"') or
+                (quote_type == 'any' and token.style is None)):
+            yield LintProblem(
+                token.start_mark.line + 1,
+                token.start_mark.column + 1,
+                "string value is not quoted with %s quotes" % (quote_type))

yamllint/rules/truthy.py

@@ -15,11 +15,12 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 """
-Use this rule to forbid truthy values that are not quoted nor explicitly typed.
+Use this rule to forbid non-explictly typed truthy values other than ``true``
+and ``false``, for example ``YES``, ``False`` and ``off``.
 
-This would prevent YAML parsers from transforming ``[yes, FALSE, Off]`` into
-``[true, false, false]`` or ``{y: 1, yes: 2, on: 3, true: 4, True: 5}`` into
-``{y: 1, true: 5}``.
+This can be useful to prevent surprises from YAML parsers transforming
+``[yes, FALSE, Off]`` into ``[true, false, false]`` or
+``{y: 1, yes: 2, on: 3, true: 4, True: 5}`` into ``{y: 1, true: 5}``.
 
 .. rubric:: Examples
 
@@ -34,8 +35,7 @@ This would prevent YAML parsers from transforming ``[yes, FALSE, Off]`` into
 
     "yes":  1
     "on":   2
-    "true": 3
-    "True": 4
+    "True": 3
 
      explicit:
        string1: !!str True
@@ -62,8 +62,7 @@ This would prevent YAML parsers from transforming ``[yes, FALSE, Off]`` into
 
     yes:  1
     on:   2
-    true: 3
-    True: 4
+    True: 3
 """
 
 import yaml
@@ -90,4 +89,4 @@ def check(conf, token, prev, next, nextnext, context):
         if token.value in TRUTHY and token.style is None:
             yield LintProblem(token.start_mark.line + 1,
                               token.start_mark.column + 1,
-                              "truthy value is not quoted")
+                              "truthy value should be true or false")