Merge branch '3.x'

CHANGES

@@ -81,6 +81,12 @@ Features added
 * #8619: html: kbd role generates customizable HTML tags for compound keys
 * #8634: html: Allow to change the order of JS/CSS via ``priority`` parameter
   for :meth:`Sphinx.add_js_file()` and :meth:`Sphinx.add_css_file()`
+* #6241: html: Allow to add JS/CSS files to the specific page when an extension
+  calls ``app.add_js_file()`` or ``app.add_css_file()`` on
+  :event:`html-page-context` event
+* #8649: imgconverter: Skip availability check if builder supports the image
+  type
+* #6241: mathjax: Include mathjax.js only on the document using equations
 * #8132: Add :confval:`project_copyright` as an alias of :confval:`copyright`
 
 Bugs fixed
@@ -102,7 +108,7 @@ Bugs fixed
 Testing
 --------
 
-Release 3.4.2 (in development)
+Release 3.4.4 (in development)
 ==============================
 
 Dependencies
@@ -120,15 +126,30 @@ Features added
 Bugs fixed
 ----------
 
+Testing
+--------
+
+Release 3.4.3 (released Jan 08, 2021)
+=====================================
+
+Bugs fixed
+----------
+
+* #8655: autodoc: Failed to generate document if target module contains an
+  object that raises an exception on ``hasattr()``
+
+Release 3.4.2 (released Jan 04, 2021)
+=====================================
+
+Bugs fixed
+----------
+
 * #8164: autodoc: Classes that inherit mocked class are not documented
 * #8602: autodoc: The ``autodoc-process-docstring`` event is emitted to the
   non-datadescriptors unexpectedly
 * #8616: autodoc: AttributeError is raised on non-class object is passed to
   autoclass directive
 
-Testing
---------
-
 Release 3.4.1 (released Dec 25, 2020)
 =====================================
 

doc/extdev/appapi.rst

@@ -376,6 +376,9 @@ Here is a more detailed list of these events.
    You can return a string from the handler, it will then replace
    ``'page.html'`` as the HTML template for this page.
 
+   .. note:: You can install JS/CSS files for the specific page via
+             :meth:`Sphinx.add_js_file` and :meth:`Sphinx.add_css_file` since v3.5.0.
+
    .. versionadded:: 0.4
 
    .. versionchanged:: 1.3

doc/usage/configuration.rst

@@ -1003,7 +1003,14 @@ that use Sphinx's HTMLWriter class.
                          'https://example.com/css/custom.css',
                          ('print.css', {'media': 'print'})]
 
+   As a special attribute, *priority* can be set as an integer to load the CSS
+   file earlier or lazier step.  For more information, refer
+   :meth:`Sphinx.add_css_files()`.
+
    .. versionadded:: 1.8
+   .. versionchanged:: 3.5
+
+      Support priority attribute
 
 .. confval:: html_js_files
 
@@ -1019,7 +1026,14 @@ that use Sphinx's HTMLWriter class.
                         'https://example.com/scripts/custom.js',
                         ('custom.js', {'async': 'async'})]
 
+   As a special attribute, *priority* can be set as an integer to load the CSS
+   file earlier or lazier step.  For more information, refer
+   :meth:`Sphinx.add_css_files()`.
+
    .. versionadded:: 1.8
+   .. versionchanged:: 3.5
+
+      Support priority attribute
 
 .. confval:: html_static_path
 

sphinx/application.py

@@ -917,9 +917,11 @@ class Sphinx:
         Add *filename* to the list of JavaScript files that the default HTML
         template will include in order of *priority* (ascending).  The filename
         must be relative to the HTML static path , or a full URI with scheme.
-        If the keyword argument ``body`` is given, its value will be added
-        between the ``<script>`` tags. Extra keyword arguments are included as
-        attributes of the ``<script>`` tag.
+        If the priority of JavaScript file is the same as others, the JavaScript
+        files will be included in order of the registration.  If the keyword
+        argument ``body`` is given, its value will be added between the
+        ``<script>`` tags. Extra keyword arguments are included as attributes of
+        the ``<script>`` tag.
 
         Example::
 
@@ -944,6 +946,9 @@ class Sphinx:
            * - 800
              - default priority for :confval:`html_js_files`
 
+        A JavaScript file can be added to the specific HTML page when on extension
+        calls this method on :event:`html-page-context` event.
+
         .. versionadded:: 0.5
 
         .. versionchanged:: 1.8
@@ -951,7 +956,7 @@ class Sphinx:
            And it allows keyword arguments as attributes of script tag.
 
         .. versionchanged:: 3.5
-           Take priority argument.
+           Take priority argument.  Allow to add a JavaScript file to the specific page.
         """
         self.registry.add_js_file(filename, priority=priority, **kwargs)
         if hasattr(self.builder, 'add_js_file'):
@@ -962,8 +967,10 @@ class Sphinx:
 
         Add *filename* to the list of CSS files that the default HTML template
         will include in order of *priority* (ascending).  The filename must be
-        relative to the HTML static path, or a full URI with scheme.  The
-        eyword arguments are also accepted for attributes of ``<link>`` tag.
+        relative to the HTML static path, or a full URI with scheme.  If the
+        priority of CSS file is the same as others, the CSS files will be
+        included in order of the registration.  The keyword arguments are also
+        accepted for attributes of ``<link>`` tag.
 
         Example::
 
@@ -990,6 +997,9 @@ class Sphinx:
            * - 800
              - default priority for :confval:`html_css_files`
 
+        A CSS file can be added to the specific HTML page when on extension calls
+        this method on :event:`html-page-context` event.
+
         .. versionadded:: 1.0
 
         .. versionchanged:: 1.6
@@ -1004,7 +1014,7 @@ class Sphinx:
            And it allows keyword arguments as attributes of link tag.
 
         .. versionchanged:: 3.5
-           Take priority argument.
+           Take priority argument.  Allow to add a CSS file to the specific page.
         """
         logger.debug('[app] adding stylesheet: %r', filename)
         self.registry.add_css_files(filename, priority=priority, **kwargs)

sphinx/builders/html/__init__.py

@@ -481,6 +481,10 @@ class StandaloneHTMLBuilder(Builder):
                 rellinks.append((indexname, indexcls.localname,
                                  '', indexcls.shortname))
 
+        # back up script_files and css_files to allow adding JS/CSS files to a specific page.
+        self._script_files = list(self.script_files)
+        self._css_files = list(self.css_files)
+
         self.globalcontext = {
             'embedded': self.embedded,
             'project': self.config.project,
@@ -1014,6 +1018,10 @@ class StandaloneHTMLBuilder(Builder):
         self.add_sidebars(pagename, ctx)
         ctx.update(addctx)
 
+        # revert script_files and css_files
+        self.script_files[:] = self._script_files
+        self.css_files[:] = self.css_files
+
         self.update_page_context(pagename, templatename, ctx, event_arg)
         newtmpl = self.app.emit_firstresult('html-page-context', pagename,
                                             templatename, ctx, event_arg)

sphinx/directives/__init__.py

@@ -9,7 +9,7 @@
 """
 
 import re
-from typing import TYPE_CHECKING, Any, Dict, List, Tuple, cast
+from typing import TYPE_CHECKING, Any, Dict, Generic, List, Tuple, TypeVar, cast
 
 from docutils import nodes
 from docutils.nodes import Node
@@ -31,6 +31,8 @@ if TYPE_CHECKING:
 nl_escape_re = re.compile(r'\\\n')
 strip_backslash_re = re.compile(r'\\(.)')
 
+T = TypeVar('T')
+
 
 def optional_int(argument: str) -> int:
     """
@@ -45,7 +47,7 @@ def optional_int(argument: str) -> int:
         return value
 
 
-class ObjectDescription(SphinxDirective):
+class ObjectDescription(SphinxDirective, Generic[T]):
     """
     Directive to describe a class, function or similar object.  Not used
     directly, but subclassed (in domain-specific directives) to add custom
@@ -95,7 +97,7 @@ class ObjectDescription(SphinxDirective):
         else:
             return [line.strip() for line in lines]
 
-    def handle_signature(self, sig: str, signode: desc_signature) -> Any:
+    def handle_signature(self, sig: str, signode: desc_signature) -> T:
         """
         Parse the signature *sig* into individual nodes and append them to
         *signode*. If ValueError is raised, parsing is aborted and the whole
@@ -107,7 +109,7 @@ class ObjectDescription(SphinxDirective):
         """
         raise ValueError
 
-    def add_target_and_index(self, name: Any, sig: str, signode: desc_signature) -> None:
+    def add_target_and_index(self, name: T, sig: str, signode: desc_signature) -> None:
         """
         Add cross-reference IDs and entries to self.indexnode, if applicable.
 
@@ -171,7 +173,7 @@ class ObjectDescription(SphinxDirective):
         if self.domain:
             node['classes'].append(self.domain)
 
-        self.names = []  # type: List[Any]
+        self.names = []  # type: List[T]
         signatures = self.get_signatures()
         for i, sig in enumerate(signatures):
             # add a signature node for each signature in the current unit

sphinx/domains/c.py

@@ -3099,7 +3099,7 @@ def _make_phony_error_name() -> ASTNestedName:
     return ASTNestedName([ASTIdentifier("PhonyNameDueToError")], rooted=False)
 
 
-class CObject(ObjectDescription):
+class CObject(ObjectDescription[ASTDeclaration]):
     """
     Description of a C language object.
     """

sphinx/domains/cpp.py

@@ -6670,7 +6670,7 @@ def _make_phony_error_name() -> ASTNestedName:
     return ASTNestedName([nne], [False], rooted=False)
 
 
-class CPPObject(ObjectDescription):
+class CPPObject(ObjectDescription[ASTDeclaration]):
     """Description of a C++ language object."""
 
     doc_field_types = [

sphinx/domains/javascript.py

@@ -32,7 +32,7 @@ from sphinx.util.nodes import make_id, make_refnode
 logger = logging.getLogger(__name__)
 
 
-class JSObject(ObjectDescription):
+class JSObject(ObjectDescription[Tuple[str, str]]):
     """
     Description of a JavaScript object.
     """

sphinx/domains/math.py

@@ -136,8 +136,11 @@ class MathDomain(Domain):
     def get_objects(self) -> List:
         return []
 
-    def has_equations(self) -> bool:
-        return any(self.data['has_equations'].values())
+    def has_equations(self, docname: str = None) -> bool:
+        if docname:
+            return self.data['has_equations'].get(docname, False)
+        else:
+            return any(self.data['has_equations'].values())
 
 
 def setup(app: "Sphinx") -> Dict[str, Any]:

sphinx/domains/python.py

@@ -333,7 +333,7 @@ class PyTypedField(PyXrefMixin, TypedField):
         return super().make_xref(rolename, domain, target, innernode, contnode, env)
 
 
-class PyObject(ObjectDescription):
+class PyObject(ObjectDescription[Tuple[str, str]]):
     """
     Description of a general Python object.
 

sphinx/domains/rst.py

@@ -31,7 +31,7 @@ logger = logging.getLogger(__name__)
 dir_sig_re = re.compile(r'\.\. (.+?)::(.*)$')
 
 
-class ReSTMarkup(ObjectDescription):
+class ReSTMarkup(ObjectDescription[str]):
     """
     Description of generic reST markup.
     """

sphinx/domains/std.py

@@ -46,7 +46,7 @@ option_desc_re = re.compile(r'((?:/|--|-|\+)?[^\s=]+)(=?\s*.*)')
 token_re = re.compile(r'`(\w+)`', re.U)
 
 
-class GenericObject(ObjectDescription):
+class GenericObject(ObjectDescription[str]):
     """
     A generic x-ref directive registered with Sphinx.add_object_type().
     """
@@ -176,7 +176,7 @@ class Target(SphinxDirective):
         return self.name + '-' + name
 
 
-class Cmdoption(ObjectDescription):
+class Cmdoption(ObjectDescription[str]):
     """
     Description of a command-line option (.. option).
     """

sphinx/ext/autodoc/mock.py

@@ -153,7 +153,10 @@ def mock(modnames: List[str]) -> Generator[None, None, None]:
 def ismock(subject: Any) -> bool:
     """Check if the object is mocked."""
     # check the object has '__sphinx_mock__' attribute
-    if not hasattr(subject, '__sphinx_mock__'):
+    try:
+        if safe_getattr(subject, '__sphinx_mock__', None) is None:
+            return False
+    except AttributeError:
         return False
 
     # check the object is mocked module

sphinx/ext/mathjax.py

@@ -17,14 +17,16 @@ from docutils import nodes
 
 import sphinx
 from sphinx.application import Sphinx
-from sphinx.builders.html import StandaloneHTMLBuilder
 from sphinx.domains.math import MathDomain
-from sphinx.environment import BuildEnvironment
 from sphinx.errors import ExtensionError
 from sphinx.locale import _
 from sphinx.util.math import get_node_equation_number
 from sphinx.writers.html import HTMLTranslator
 
+# more information for mathjax secure url is here:
+# https://docs.mathjax.org/en/latest/start.html#secure-access-to-the-cdn
+MATHJAX_URL = 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js'
+
 
 def html_visit_math(self: HTMLTranslator, node: nodes.math) -> None:
     self.body.append(self.starttag(node, 'span', '', CLASS='math notranslate nohighlight'))
@@ -66,25 +68,25 @@ def html_visit_displaymath(self: HTMLTranslator, node: nodes.math_block) -> None
     raise nodes.SkipNode
 
 
-def install_mathjax(app: Sphinx, env: BuildEnvironment) -> None:
+def install_mathjax(app: Sphinx, pagename: str, templatename: str, context: Dict,
+                    event_arg: Any) -> None:
     if app.builder.format != 'html' or app.builder.math_renderer_name != 'mathjax':  # type: ignore  # NOQA
         return
     if not app.config.mathjax_path:
         raise ExtensionError('mathjax_path config value must be set for the '
                              'mathjax extension to work')
 
-    builder = cast(StandaloneHTMLBuilder, app.builder)
-    domain = cast(MathDomain, env.get_domain('math'))
-    if domain.has_equations():
+    domain = cast(MathDomain, app.env.get_domain('math'))
+    if domain.has_equations(pagename):
         # Enable mathjax only if equations exists
         options = {'async': 'async'}
         if app.config.mathjax_options:
             options.update(app.config.mathjax_options)
-        builder.add_js_file(app.config.mathjax_path, **options)
+        app.add_js_file(app.config.mathjax_path, **options)  # type: ignore
 
         if app.config.mathjax_config:
             body = "MathJax.Hub.Config(%s)" % json.dumps(app.config.mathjax_config)
-            builder.add_js_file(None, type="text/x-mathjax-config", body=body)
+            app.add_js_file(None, type="text/x-mathjax-config", body=body)
 
 
 def setup(app: Sphinx) -> Dict[str, Any]:
@@ -92,15 +94,11 @@ def setup(app: Sphinx) -> Dict[str, Any]:
                                (html_visit_math, None),
                                (html_visit_displaymath, None))
 
-    # more information for mathjax secure url is here:
-    # https://docs.mathjax.org/en/latest/start.html#secure-access-to-the-cdn
-    app.add_config_value('mathjax_path',
-                         'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js',
-                         'html')
+    app.add_config_value('mathjax_path', MATHJAX_URL, 'html')
     app.add_config_value('mathjax_options', {}, 'html')
     app.add_config_value('mathjax_inline', [r'\(', r'\)'], 'html')
     app.add_config_value('mathjax_display', [r'\[', r'\]'], 'html')
     app.add_config_value('mathjax_config', None, 'html')
-    app.connect('env-updated', install_mathjax)
+    app.connect('html-page-context', install_mathjax)
 
     return {'version': sphinx.__display_version__, 'parallel_read_safe': True}

sphinx/transforms/post_transforms/images.py

@@ -197,15 +197,15 @@ class ImageConverter(BaseImageConverter):
     def match(self, node: nodes.image) -> bool:
         if not self.app.builder.supported_image_types:
             return False
+        elif set(node['candidates']) & set(self.app.builder.supported_image_types):
+            # builder supports the image; no need to convert
+            return False
         elif self.available is None:
             # store the value to the class variable to share it during the build
             self.__class__.available = self.is_available()
 
         if not self.available:
             return False
-        elif set(node['candidates']) & set(self.app.builder.supported_image_types):
-            # builder supports the image; no need to convert
-            return False
         else:
             rule = self.get_conversion_rule(node)
             if rule:

tests/roots/test-ext-math/index.rst

@@ -6,6 +6,7 @@ Test Math
 
    math
    page
+   nomath
 
 .. math:: a^2+b^2=c^2
 

tests/roots/test-html_assets/conf.py

@@ -4,7 +4,9 @@ version = '1.4.4'
 html_static_path = ['static', 'subdir']
 html_extra_path = ['extra', 'subdir']
 html_css_files = ['css/style.css',
-                  ('https://example.com/custom.css', {'title': 'title', 'media': 'print'})]
+                  ('https://example.com/custom.css',
+                   {'title': 'title', 'media': 'print', 'priority': 400})]
 html_js_files = ['js/custom.js',
-                 ('https://example.com/script.js', {'async': 'async'})]
+                 ('https://example.com/script.js',
+                  {'async': 'async', 'priority': 400})]
 exclude_patterns = ['**/_build', '**/.htpasswd']

tests/test_build_html.py

@@ -1220,15 +1220,15 @@ def test_assets_order(app):
 
     # css_files
     expected = ['_static/early.css', '_static/pygments.css', '_static/alabaster.css',
-                '_static/normal.css', '_static/late.css', '_static/css/style.css',
-                'https://example.com/custom.css', '_static/lazy.css']
+                'https://example.com/custom.css', '_static/normal.css', '_static/late.css',
+                '_static/css/style.css', '_static/lazy.css']
     pattern = '.*'.join('href="%s"' % f for f in expected)
     assert re.search(pattern, content, re.S)
 
     # js_files
     expected = ['_static/early.js', '_static/jquery.js', '_static/underscore.js',
-                '_static/doctools.js', '_static/normal.js', '_static/late.js',
-                '_static/js/custom.js', 'https://example.com/script.js', '_static/lazy.js']
+                '_static/doctools.js', 'https://example.com/script.js', '_static/normal.js',
+                '_static/late.js', '_static/js/custom.js', '_static/lazy.js']
     pattern = '.*'.join('src="%s"' % f for f in expected)
     assert re.search(pattern, content, re.S)
 

tests/test_ext_math.py

@@ -15,6 +15,7 @@ import warnings
 import pytest
 from docutils import nodes
 
+from sphinx.ext.mathjax import MATHJAX_URL
 from sphinx.testing.util import assert_node
 
 
@@ -224,6 +225,18 @@ def test_mathjax_config(app, status, warning):
             '</script>' in content)
 
 
+@pytest.mark.sphinx('html', testroot='ext-math',
+                    confoverrides={'extensions': ['sphinx.ext.mathjax']})
+def test_mathjax_is_installed_only_if_document_having_math(app, status, warning):
+    app.builder.build_all()
+
+    content = (app.outdir / 'index.html').read_text()
+    assert MATHJAX_URL in content
+
+    content = (app.outdir / 'nomath.html').read_text()
+    assert MATHJAX_URL not in content
+
+
 @pytest.mark.sphinx('html', testroot='basic',
                     confoverrides={'extensions': ['sphinx.ext.mathjax']})
 def test_mathjax_is_not_installed_if_no_equations(app, status, warning):

utils/release-checklist

@@ -4,7 +4,7 @@ Release checklist
 for stable releases
 -------------------
 
-* open https://github.com/sphinx-doc/sphinx/actions?query=branch:X.Y.x and all tests has passed
+* open "https://github.com/sphinx-doc/sphinx/actions?query=branch:X.Y.x" and all tests has passed
 * Run ``git fetch; git status`` and check nothing changed
 * ``python utils/bump_version.py X.Y.Z``
 * Check diff by ``git diff``
@@ -28,7 +28,7 @@ for stable releases
 for first beta releases
 -----------------------
 
-* open https://github.com/sphinx-doc/sphinx/actions?query=branch:master and all tests has passed
+* open "https://github.com/sphinx-doc/sphinx/actions?query=branch:master" and all tests has passed
 * Run ``git fetch; git status`` and check nothing changed
 * Run ``python setup.py extract_messages``
 * Run ``(cd sphinx/locale; tx push -s)``
@@ -58,7 +58,7 @@ for first beta releases
 for other beta releases
 -----------------------
 
-* open https://github.com/sphinx-doc/sphinx/actions?query=branch:X.x and all tests has passed
+* open "https://github.com/sphinx-doc/sphinx/actions?query=branch:X.x" and all tests has passed
 * Run ``git fetch; git status`` and check nothing changed
 * ``python utils/bump_version.py X.Y.0bN``
 * Check diff by ``git diff``
@@ -81,7 +81,7 @@ for other beta releases
 for major releases
 ------------------
 
-* open https://github.com/sphinx-doc/sphinx/actions?query=branch:X.x and all tests has passed
+* open "https://github.com/sphinx-doc/sphinx/actions?query=branch:X.x" and all tests has passed
 * Run ``git fetch; git status`` and check nothing changed
 * Run ``(cd sphinx/locale; tx pull -a -f)``
 * Run ``python setup.py compile_catalog``