test(terminal): cover C1 buffer text controls (#103439)

steipete · web-flow · commit c8655be91514 · 2026-07-10T12:24:17.000+01:00
diff --git a/src/gateway/terminal/buffer-text.test.ts b/src/gateway/terminal/buffer-text.test.ts
@@ -2,8 +2,9 @@ import { describe, expect, it } from "vitest";
 import { renderTerminalBufferText } from "./buffer-text.js";
 
 describe("renderTerminalBufferText", () => {
-  it("strips ANSI color and erase sequences", () => {
+  it("strips ANSI color and erase sequences in ESC and C1 forms", () => {
     expect(renderTerminalBufferText("\u001b[32mok\u001b[0m done\u001b[2K")).toBe("ok done");
+    expect(renderTerminalBufferText("\u009b31mred\u009b0m")).toBe("red");
   });
 
   it("collapses carriage-return overwrites to the last write per line", () => {
@@ -18,6 +19,13 @@ describe("renderTerminalBufferText", () => {
     expect(renderTerminalBufferText("a\u0007b\tc")).toBe("ab\tc");
   });
 
+  it("drops the full residual C1 range without clipping adjacent Unicode text", () => {
+    const c1 = Array.from({ length: 0x20 }, (_, offset) =>
+      String.fromCharCode(0x80 + offset),
+    ).join("");
+    expect(renderTerminalBufferText(`a\u007f${c1}\u00a0b\tc`)).toBe("a\u00a0b\tc");
+  });
+
   it("strips OSC title sequences", () => {
     expect(renderTerminalBufferText("\u001b]0;title\u0007prompt$ ")).toBe("prompt$ ");
   });
