Fix possibly-invalid HTML when a rubric node is manually created

CHANGES.rst

@@ -16,6 +16,9 @@ Features added
 Bugs fixed
 ----------
 
+* Fix invalid HTML when a rubric node with invalid ``heading-level`` is used.
+  Patch by Adam Turner.
+
 Testing
 -------
 
@@ -120,7 +123,7 @@ Features added
 * #11773: Display :py:class:`~typing.Annotated` annotations
   with their metadata in the Python domain.
   Patch by Adam Turner and David Stansby.
-* #12506: Add ``level`` option to :rst:dir:`rubric` directive.
+* #12506: Add ``heading-level`` option to :rst:dir:`rubric` directive.
   Patch by Chris Sewell.
 * #12567: Add the :event:`write-started` event.
   Patch by Chris Sewell.

doc/usage/restructuredtext/directives.rst

@@ -544,10 +544,10 @@ Presentational
    A rubric is like an informal heading that doesn't correspond to the document's structure,
    i.e. it does not create a table of contents node.
 
-   .. rst:directive:option:: level: n
+   .. rst:directive:option:: heading-level: n
       :type: number from 1 to 6
 
-      .. versionadded:: 7.4
+      .. versionadded:: 7.4.1
 
       Use this option to specify the heading level of the rubric.
       In this case the rubric will be rendered as ``<h1>`` to ``<h6>`` for HTML output,

sphinx/directives/patches.py

@@ -187,17 +187,17 @@ class Rubric(SphinxDirective):
     option_spec = {
         'class': directives.class_option,
         'name': directives.unchanged,
-        'level': lambda c: directives.choice(c, ('1', '2', '3', '4', '5', '6')),
+        'heading-level': lambda c: directives.choice(c, ('1', '2', '3', '4', '5', '6')),
     }
 
-    def run(self) -> list[Node]:
+    def run(self) -> list[nodes.rubric | nodes.system_message]:
         set_classes(self.options)
         rubric_text = self.arguments[0]
         textnodes, messages = self.parse_inline(rubric_text, lineno=self.lineno)
+        if 'heading-level' in self.options:
+            self.options['heading-level'] = int(self.options['heading-level'])
         rubric = nodes.rubric(rubric_text, '', *textnodes, **self.options)
         self.add_name(rubric)
-        if 'level' in self.options:
-            rubric['level'] = int(self.options['level'])
         return [rubric, *messages]
 
 

sphinx/writers/html5.py

@@ -510,10 +510,10 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         super().depart_title(node)
 
     # overwritten
-    def visit_rubric(self, node: Element) -> None:
-        if "level" in node:
-            level = node["level"]
-            if level in (1, 2, 3, 4, 5, 6):
+    def visit_rubric(self, node: nodes.rubric) -> None:
+        if 'heading-level' in node:
+            level = node['heading-level']
+            if level in {1, 2, 3, 4, 5, 6}:
                 self.body.append(self.starttag(node, f'h{level}', '', CLASS='rubric'))
             else:
                 logger.warning(
@@ -527,8 +527,8 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
             super().visit_rubric(node)
 
     # overwritten
-    def depart_rubric(self, node: Element) -> None:
-        if level := node.get("level"):
+    def depart_rubric(self, node: nodes.rubric) -> None:
+        if (level := node.get('heading-level')) in {1, 2, 3, 4, 5, 6}:
             self.body.append(f'</h{level}>\n')
         else:
             super().depart_rubric(node)

sphinx/writers/latex.py

@@ -972,12 +972,12 @@ class LaTeXTranslator(SphinxTranslator):
         self.body.append(r'\end{sphinxseealso}')
         self.body.append(BLANKLINE)
 
-    def visit_rubric(self, node: Element) -> None:
+    def visit_rubric(self, node: nodes.rubric) -> None:
         if len(node) == 1 and node.astext() in ('Footnotes', _('Footnotes')):
             raise nodes.SkipNode
         tag = 'subsubsection'
-        if "level" in node:
-            level = node["level"]
+        if 'heading-level' in node:
+            level = node['heading-level']
             try:
                 tag = self.sectionnames[self.top_sectionlevel - 1 + level]
             except Exception:
@@ -992,7 +992,7 @@ class LaTeXTranslator(SphinxTranslator):
         self.context.append('}' + CR)
         self.in_title = 1
 
-    def depart_rubric(self, node: Element) -> None:
+    def depart_rubric(self, node: nodes.rubric) -> None:
         self.in_title = 0
         self.body.append(self.context.pop())
 

tests/roots/test-markup-rubric/index.rst

@@ -10,30 +10,30 @@ test-markup-rubric
    :class: myclass
 
 .. rubric:: A rubric with a heading level 1
-   :level: 1
+   :heading-level: 1
    :class: myclass
 
 .. rubric:: A rubric with a heading level 2
-   :level: 2
+   :heading-level: 2
    :class: myclass
 
 .. rubric:: A rubric with a heading level 3
-   :level: 3
+   :heading-level: 3
    :class: myclass
 
 .. rubric:: A rubric with a heading level 4
-   :level: 4
+   :heading-level: 4
    :class: myclass
 
 .. rubric:: A rubric with a heading level 5
-   :level: 5
+   :heading-level: 5
    :class: myclass
 
 .. rubric:: A rubric with a heading level 6
-   :level: 6
+   :heading-level: 6
    :class: myclass
 
 .. rubric:: A rubric with a heading level 7
-   :level: 7
+   :heading-level: 7
    :class: myclass
 

tests/test_builders/test_build_html_5_output.py

@@ -3,6 +3,7 @@
 import re
 
 import pytest
+from docutils import nodes
 
 from tests.test_builders.xpath_util import check_xpath
 
@@ -282,8 +283,25 @@ def test_html5_output(app, cached_etree_parse, fname, path, check):
 
 @pytest.mark.sphinx('html', testroot='markup-rubric')
 def test_html5_rubric(app):
+    def insert_invalid_rubric_heading_level(app, doctree, docname):
+        if docname != 'index':
+            return
+        new_node = nodes.rubric('', 'INSERTED RUBRIC')
+        new_node['heading-level'] = 7
+        doctree[0].append(new_node)
+
+    app.connect('doctree-resolved', insert_invalid_rubric_heading_level)
     app.build()
-    assert '"7" unknown' in app.warning.getvalue()
+
+    warnings = app.warning.getvalue()
     content = (app.outdir / 'index.html').read_text(encoding='utf8')
     assert '<p class="rubric">This is a rubric</p>' in content
     assert '<h2 class="myclass rubric">A rubric with a heading level 2</h2>' in content
+
+    # directive warning
+    assert '"7" unknown' in warnings
+
+    # html writer warning
+    assert 'WARNING: unsupported rubric heading level: 7' in warnings
+    assert '</h7>' not in content
+    assert '<p class="rubric">INSERTED RUBRIC</p>' in content