remove unnecessary permalink to depart_term() (#252)

* use rst-example in additional_samples.rst for glossary directive
* conditionally add permalink for non-default behavior

docs/additional_samples.rst

@@ -190,17 +190,19 @@ Alignment
 Glossaries
 ==========
 
-.. glossary::
+.. rst-example::
+
+   .. glossary::
 
-   environment
-      A structure where information about all documents under the root is
-      saved, and used for cross-referencing.  The environment is pickled
-      after the parsing stage, so that successive runs only need to read
-      and parse new and changed documents.
+      environment
+         A structure where information about all documents under the root is
+         saved, and used for cross-referencing.  The environment is pickled
+         after the parsing stage, so that successive runs only need to read
+         and parse new and changed documents.
 
-   source directory
-      The directory which, including its subdirectories, contains all
-      source files for one Sphinx project.
+      source directory
+         The directory which, including its subdirectories, contains all
+         source files for one Sphinx project.
 
 Math
 ====

sphinx_immaterial/apidoc/object_toc.py

@@ -294,7 +294,13 @@ def depart_term(
     node: docutils.nodes.term,
     super_func: html_translator_mixin.BaseVisitCallback[docutils.nodes.term],
 ) -> None:
-    self.add_permalink_ref(node, _("Permalink to this definition"))
+    next_node: docutils.nodes.Element = node.next_node(descend=False, siblings=True)
+    if not isinstance(next_node, docutils.nodes.classifier) and not (
+        node.parent is not None
+        and node.parent.parent is not None
+        and isinstance(node.parent.parent.parent, sphinx.addnodes.glossary)
+    ):
+        self.add_permalink_ref(node, _("Permalink to this definition"))
     super_func(self, node)