diff --git a/sphinx_immaterial/apidoc/cpp/api_parser.py b/sphinx_immaterial/apidoc/cpp/api_parser.py
index 44aadd1d..3d7152f2 100644
--- a/sphinx_immaterial/apidoc/cpp/api_parser.py
+++ b/sphinx_immaterial/apidoc/cpp/api_parser.py
@@ -112,7 +112,7 @@ def _make_replacement_pattern(
 )
 
 SPECIAL_GROUP_COMMAND_PATTERN = re.compile(
-    r"^(?:\\|@)(ingroup|relates|membergroup|id)\s+(.+[^\s])\s*$", re.MULTILINE
+    r"^(?:\\|@)(ingroup|relates|membergroup|id)\s+(.*[^\s])\s*$", re.MULTILINE
 )
 
 
@@ -2206,7 +2206,9 @@ def _format_template_arguments(entity: CppApiEntity) -> str:
 
 def _get_entity_base_page_name_component(entity: CppApiEntity) -> str:
     base_name = entity["name"]
-    if entity["kind"] == "class" and entity.get("specializes"):
+    if (entity["kind"] == "class" or entity["kind"] == "var") and entity.get(
+        "specializes"
+    ):
         # Strip any template arguments
         base_name = re.sub("([^<]*).*", r"\1", base_name)
     elif entity["kind"] == "conversion_function":
diff --git a/tests/cpp_api_parser_test.py b/tests/cpp_api_parser_test.py
index 5b6fdb1f..acbbcd51 100644
--- a/tests/cpp_api_parser_test.py
+++ b/tests/cpp_api_parser_test.py
@@ -8,7 +8,7 @@
 def test_basic():
     config = api_parser.Config(
         input_path="a.cpp",
-        input_content=b"""
+        input_content=rb"""
 
 /// This is the doc.
 int foo(bool x, int y);
@@ -17,6 +17,7 @@ def test_basic():
     )
 
     output = api_parser.generate_output(config)
+    assert not output.get("errors")
     entities = list(output["entities"].values())
     assert len(entities) == 1
 
@@ -45,6 +46,7 @@ class DimensionIdentifier {
     )
 
     output = api_parser.generate_output(config)
+    assert not output.get("errors")
     print(output)
     entities = list(output["entities"].values())
     assert len(entities) == 2
@@ -62,6 +64,8 @@ def test_enable_if_transform():
 }
 
 /// This is the doc.
+///
+/// \ingroup X
 template <typename U, typename T, typename = std::enable_if_t<std::is_convertible_v<U(*)[], T(*)[]>>>
 int foo(T x);
 
@@ -76,7 +80,8 @@ def test_enable_if_transform():
     )
 
     output = api_parser.generate_output(config)
-
+    assert not output.get("errors")
+    assert not output.get("warnings")
     entities = list(output["entities"].values())
     assert len(entities) == 1
     requires = entities[0].get("requires")
@@ -170,6 +175,7 @@ def test_comment_styles(doc_str: bytes, expected: str):
         input_content=doc_str,
     )
     output = api_parser.generate_output(config)
+    assert not output.get("errors")
     doc_strings = [
         cast(api_parser.JsonDocComment, v["doc"])["text"]
         for v in output.get("entities", {}).values()
@@ -198,6 +204,7 @@ def test_function_fields():
     )
 
     output = api_parser.generate_output(config)
+    assert not output.get("errors")
     entities = output.get("entities", {})
     doc_str = ""
     for entity in entities.values():
@@ -238,9 +245,41 @@ def test_unnamed_template_parameter():
     )
 
     output = api_parser.generate_output(config)
+    assert not output.get("errors")
+    assert not output.get("warnings")
     entities = output.get("entities", {})
     assert len(entities) == 1
     entity = list(entities.values())[0]
     tparams = entity["template_parameters"]
     assert tparams is not None
     assert tparams[0]["name"] == ""
+
+
+def test_variable_template_specialization():
+    config = api_parser.Config(
+        input_path="a.cpp",
+        compiler_flags=["-std=c++17", "-x", "c++"],
+        input_content=rb"""
+/// Check if it has A.
+///
+/// \ingroup Array
+template <typename T>
+constexpr inline bool HasA = false;
+
+/// Specializes HasA for int.
+/// \ingroup Array
+/// \id int
+template <>
+constexpr inline bool HasA<int> = true;
+""",
+    )
+
+    output = api_parser.generate_output(config)
+    assert not output.get("errors")
+    assert not output.get("warnings")
+    entities = output.get("entities", {})
+    assert len(entities) == 2
+    assert sorted([entity["page_name"] for entity in entities.values()]) == [
+        "HasA",
+        "HasA-int",
+    ]