Fix up markdown lists that use * (microsoft#218483)

* Fix up markdown lists that use *
Fix microsoft#217946

* Comment

Author: roblourens

src/vs/base/browser/markdownRenderer.ts

@@ -768,8 +768,8 @@ function completeListItemPattern(list: marked.Tokens.List): marked.Tokens.List |
 
 	const previousListItemsText = mergeRawTokenText(list.items.slice(0, -1));
 
-	// Grabbing the `- ` or `1. ` off the list item because I can't find a better way to do this
-	const lastListItemLead = lastListItem.raw.match(/^(\s*(-|\d+\.) +)/)?.[0];
+	// Grabbing the `- ` or `1. ` or `* ` off the list item because I can't find a better way to do this
+	const lastListItemLead = lastListItem.raw.match(/^(\s*(-|\d+\.|\*) +)/)?.[0];
 	if (!lastListItemLead) {
 		// Is badly formatted
 		return;

src/vs/base/test/browser/markdownRenderer.test.ts

@@ -607,6 +607,15 @@ const y = 2;
 				assert.deepStrictEqual(newTokens, completeTokens);
 			});
 
+			test(`incomplete ${name} in asterisk list`, () => {
+				const text = `* list item one\n* list item two and ${delimiter}text`;
+				const tokens = marked.lexer(text);
+				const newTokens = fillInIncompleteTokens(tokens);
+
+				const completeTokens = marked.lexer(text + delimiter);
+				assert.deepStrictEqual(newTokens, completeTokens);
+			});
+
 			test(`incomplete ${name} in numbered list`, () => {
 				const text = `1. list item one\n2. list item two and ${delimiter}text`;
 				const tokens = marked.lexer(text);