🐛 fix(toctree): use section node when title is empty

roots/test-title-empty-groups/conf.py

@@ -0,0 +1,8 @@
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent))
+extensions = ["sphinx_argparse_cli"]
+nitpicky = True

roots/test-title-empty-groups/index.rst

@@ -0,0 +1,4 @@
+.. sphinx_argparse_cli::
+  :module: parser
+  :func: make
+  :title:

roots/test-title-empty-groups/parser.py

@@ -0,0 +1,9 @@
+from __future__ import annotations
+
+from argparse import ArgumentParser
+
+
+def make() -> ArgumentParser:
+    parser = ArgumentParser(prog="tool")
+    parser.add_argument("--verbose", action="store_true", help="be verbose")
+    return parser

src/sphinx_argparse_cli/_logic.py

@@ -187,7 +187,7 @@ def run(self) -> list[Node]:
         self.env.note_reread()  # this document needs to be always updated
         title_text = self.options.get("title", f"{self.parser.prog} - CLI interface").strip()
         if not title_text:
-            home_section: Element = paragraph()
+            home_section: Element = section("")
         else:
             home_section = section("", title("", Text(title_text)), ids=[self.make_id(title_text)], names=[title_text])
 

tests/test_logic.py

@@ -403,3 +403,9 @@ def test_prog_subcommands(build_outcome: str) -> None:
 def test_multiword_prog(build_outcome: str) -> None:
     assert "python -m build positional arguments" in build_outcome
     assert "python -m build options" in build_outcome
+
+
+@pytest.mark.sphinx(buildername="html", testroot="title-empty-groups")
+def test_empty_title_groups_in_toctree(build_outcome: str) -> None:
+    assert '<section id="tool-options">' in build_outcome
+    assert "be verbose" in build_outcome