Fix "implicit index"

mkdocs_literate_nav/parser.py

@@ -134,7 +134,8 @@ def make_nav(
     assert section.tag in _LIST_TAGS
     result = []
     if first_item is not None:
-        seen_items.add(first_item)
+        if type(first_item) is str:
+            seen_items.add(first_item)
         result.append({None: first_item})
     for item in section:
         assert item.tag == "li"
@@ -176,7 +177,7 @@ def make_nav(
         if error:
             raise LiterateNavParseError(error, item)
 
-        if isinstance(out_item, str):
+        if type(out_item) is str:
             seen_items.add(out_item)
         result.append({out_title: out_item})
 

tests/markdown_to_nav/nested/test_borgs.yml

@@ -0,0 +1,20 @@
+files:
+- index.md
+- baz.md
+- borgs/index.md
+- borgs/bar.md
+- borgs/foo.md
+navs:
+  /: |
+    * [Frob](index.md)
+    * [Baz](baz.md)
+    * [Borgs](borgs/)
+  /borgs: |
+    * [Bar](bar.md)
+    * [Foo](foo.md)
+output:
+- Frob: index.md
+- Baz: baz.md
+- Borgs:
+  - Bar: borgs/bar.md
+  - Foo: borgs/foo.md

tests/markdown_to_nav/nested/test_borgs_implicit_index.yml

@@ -0,0 +1,21 @@
+files:
+- index.md
+- baz.md
+- borgs/index.md
+- borgs/bar.md
+- borgs/foo.md
+navs:
+  /: |
+    * [Baz](baz.md)
+    * [Borgs](borgs/)
+  /borgs: |
+    * [Bar](bar.md)
+    * [Foo](foo.md)
+implicit_index: true
+output:
+- null: index.md
+- Baz: baz.md
+- Borgs:
+  - null: borgs/index.md
+  - Bar: borgs/bar.md
+  - Foo: borgs/foo.md