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[PATCH 13/20] docs/qapidoc: fix nested parsing under untagged sections


From: John Snow
Subject: [PATCH 13/20] docs/qapidoc: fix nested parsing under untagged sections
Date: Tue, 14 May 2024 17:57:32 -0400

Sphinx does not like sections without titles, because it wants to
convert every section into a reference. When there is no title, it
struggles to do this and transforms the tree inproperly.

Depending on the rST used, this may result in an assertion error deep in
the docutils HTMLWriter.

When parsing an untagged section (free paragraphs), skip making a hollow
section and instead append the parse results to the prior section.

Many Bothans died to bring us this information.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 docs/sphinx/qapidoc.py | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/docs/sphinx/qapidoc.py b/docs/sphinx/qapidoc.py
index 34e95bd168d..cfc0cf169ef 100644
--- a/docs/sphinx/qapidoc.py
+++ b/docs/sphinx/qapidoc.py
@@ -286,14 +286,20 @@ def _nodes_for_sections(self, doc):
             if section.tag and section.tag == 'TODO':
                 # Hide TODO: sections
                 continue
+
+            if not section.tag:
+                # Sphinx cannot handle sectionless titles;
+                # Instead, just append the results to the prior section.
+                container = nodes.container()
+                self._parse_text_into_node(section.text, container)
+                nodelist += container.children
+                continue
+
             snode = self._make_section(section.tag)
-            if section.tag and section.tag.startswith('Example'):
+            if section.tag.startswith('Example'):
                 snode += self._nodes_for_example(dedent(section.text))
             else:
-                self._parse_text_into_node(
-                    dedent(section.text) if section.tag else section.text,
-                    snode,
-                )
+                self._parse_text_into_node(dedent(section.text), snode)
             nodelist.append(snode)
         return nodelist
 
-- 
2.44.0




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