From 00b032676f12212efe02319c1a9787a4956c931f Mon Sep 17 00:00:00 2001
From: Xiangzhe <32761048+xz-dev@users.noreply.github.com>
Date: Fri, 17 Jul 2026 15:01:10 +0800
Subject: [PATCH] fix(tui): handle CRLF and CR line endings (#6764)

---
 packages/tui/src/utils.ts           |  2 +-
 packages/tui/test/wrap-ansi.test.ts | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/packages/tui/src/utils.ts b/packages/tui/src/utils.ts
index 602cb8dd..ceadfc69 100644
--- a/packages/tui/src/utils.ts
+++ b/packages/tui/src/utils.ts
@@ -719,7 +719,7 @@ export function wrapTextWithAnsi(text: string, width: number): string[] {
 
 	// Handle newlines by processing each line separately
 	// Track ANSI state across lines so styles carry over after literal newlines
-	const inputLines = text.split("\n");
+	const inputLines = text.split(/\r\n|\r|\n/);
 	const result: string[] = [];
 	const tracker = new AnsiCodeTracker();
 
diff --git a/packages/tui/test/wrap-ansi.test.ts b/packages/tui/test/wrap-ansi.test.ts
index a1183f75..618be234 100644
--- a/packages/tui/test/wrap-ansi.test.ts
+++ b/packages/tui/test/wrap-ansi.test.ts
@@ -101,6 +101,26 @@ describe("wrapTextWithAnsi", () => {
 	});
 
 	describe("basic wrapping", () => {
+		it("should handle LF, CRLF, and CR line endings", () => {
+			assert.deepStrictEqual(wrapTextWithAnsi("first\nsecond\r\nthird\rfourth", 80), [
+				"first",
+				"second",
+				"third",
+				"fourth",
+			]);
+		});
+
+		it("should preserve ANSI state across CRLF and CR line endings", () => {
+			const red = "\x1b[31m";
+			const reset = "\x1b[0m";
+
+			assert.deepStrictEqual(wrapTextWithAnsi(`${red}first\r\nsecond\rthird${reset}`, 80), [
+				`${red}first`,
+				`${red}second`,
+				`${red}third${reset}`,
+			]);
+		});
+
 		it("should wrap plain text correctly", () => {
 			const text = "hello world this is a test";
 			const wrapped = wrapTextWithAnsi(text, 10);