Remove block cursor character from chat (microsoft#184936)

* Remove block cursor character from chat

* Remove comment

Author: roblourens

src/vs/workbench/contrib/chat/browser/chatListRenderer.ts

@@ -88,7 +88,6 @@ export interface IChatRendererDelegate {
 }
 
 export class ChatListItemRenderer extends Disposable implements ITreeRenderer<ChatTreeItem, FuzzyScore, IChatListItemTemplate> {
-	static readonly cursorCharacter = '\u258c';
 	static readonly ID = 'item';
 
 	private readonly codeBlocksByResponseId = new Map<string, IChatCodeBlockInfo[]>();
@@ -368,12 +367,7 @@ export class ChatListItemRenderer extends Disposable implements ITreeRenderer<Ch
 					isFullyRendered: renderValue.isFullString
 				};
 
-				// Don't add the cursor if it will go after a codeblock, since this will always cause layout shifting
-				// when the codeblock is the last thing in the response, and that happens often.
-				const plusCursor = renderValue.value.match(/```\s*$/) ?
-					renderValue.value :
-					renderValue.value + ` ${ChatListItemRenderer.cursorCharacter}`;
-				const result = this.renderMarkdown(new MarkdownString(plusCursor), element, disposables, templateData, true);
+				const result = this.renderMarkdown(new MarkdownString(renderValue.value), element, disposables, templateData, true);
 				// Doing the progressive render
 				dom.clearNode(templateData.value);
 				templateData.value.appendChild(result.element);
@@ -754,28 +748,16 @@ class CodeBlockPart extends Disposable implements IChatResultCodeBlockPart {
 	}
 
 	private setText(newText: string): void {
-		let currentText = this.textModel.getLinesContent().join('\n');
+		const currentText = this.textModel.getLinesContent().join('\n');
 		if (newText === currentText) {
 			return;
 		}
 
-		let removedChars = 0;
-		if (currentText.endsWith(` ${ChatListItemRenderer.cursorCharacter}`)) {
-			removedChars = 2;
-		} else if (currentText.endsWith(ChatListItemRenderer.cursorCharacter)) {
-			removedChars = 1;
-		}
-
-		if (removedChars > 0) {
-			currentText = currentText.slice(0, currentText.length - removedChars);
-		}
-
 		if (newText.startsWith(currentText)) {
 			const text = newText.slice(currentText.length);
 			const lastLine = this.textModel.getLineCount();
 			const lastCol = this.textModel.getLineMaxColumn(lastLine);
-			const insertAtCol = lastCol - removedChars;
-			this.textModel.applyEdits([{ range: new Range(lastLine, insertAtCol, lastLine, lastCol), text }]);
+			this.textModel.applyEdits([{ range: new Range(lastLine, lastCol, lastLine, lastCol), text }]);
 		} else {
 			// console.log(`Failed to optimize setText`);
 			this.textModel.setValue(newText);