list item improvements

examples/example.md

@@ -42,6 +42,22 @@ Two tildes indicates strikethrough, e.g. `~~cross out~~` render ~~cross out~~.
 
 Inline code is indicated by backticks. e.g. `import this`.
 
+## Lists
+
+1. Lists can be ordered
+2. Lists can be unordered
+   - Foo
+   - Bar
+     - Jessica
+       - Reg
+       - Green
+         - January
+         - February
+         - March
+       - Blue
+     - Paul
+   - Baz
+
 ## Fences
 
 Fenced code blocks are introduced with three back-ticks and the optional parser. Here we are rendering the code in a sub-widget with syntax highlighting and indent guides.

src/textual/widgets/_markdown.py

@@ -381,6 +381,14 @@ class MarkdownListItem(MarkdownBlock):
         self._blocks.clear()
 
 
+class MarkdownOrderedListItem(MarkdownListItem):
+    pass
+
+
+class MarkdownUnorderedListItem(MarkdownListItem):
+    pass
+
+
 class MarkdownFence(MarkdownBlock):
     """A fence Markdown block."""
 
@@ -452,6 +460,8 @@ class Markdown(Widget):
     """
     COMPONENT_CLASSES = {"em", "strong", "s", "code_inline"}
 
+    BULLETS = ["⏺ ", "■ ", "• ", "‣ "]
+
     def __init__(
         self,
         markdown: str | None = None,
@@ -548,8 +558,15 @@ class Markdown(Widget):
             elif token.type == "ordered_list_open":
                 stack.append(MarkdownOrderedList())
             elif token.type == "list_item_open":
+                item_count = sum(
+                    1 for block in stack if isinstance(block, MarkdownUnorderedListItem)
+                )
                 stack.append(
-                    MarkdownListItem(f"{token.info}. " if token.info else "● ")
+                    MarkdownOrderedListItem(f" {token.info}. ")
+                    if token.info
+                    else MarkdownUnorderedListItem(
+                        self.BULLETS[item_count % len(self.BULLETS)]
+                    )
                 )
             elif token.type == "table_open":
                 stack.append(MarkdownTable())