From c07fd5d570f15154df695759fc56074f56f08ed1 Mon Sep 17 00:00:00 2001
From: Craig Cheney <craig@striverobotics.ai>
Date: Fri, 18 Sep 2026 15:06:48 -0400
Subject: [PATCH] Fix pasted terminal input

---
 js/terminal.js         | 13 ++++---
 tests/terminal.test.js | 77 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+), 4 deletions(-)

diff --git a/js/terminal.js b/js/terminal.js
index f8014ba1..40a3146a 100644
--- a/js/terminal.js
+++ b/js/terminal.js
@@ -205,12 +205,17 @@ function runRootTerminal(term) {
           term.tabOptions = [];
           term.tabBase = "";
 
-          // Optimize: just write the character instead of redrawing entire line
-          if (e.length === 1 && e.charCodeAt(0) >= 32) {
+          // xterm sends pasted text as one payload, so normalize it before insert.
+          const input = e
+            .replace(/[\r\n\t]/g, " ")
+            .replace(/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/g, "");
+
+          if (input.length > 0) {
             const pos = term.pos();
             const restOfLine = term.currentLine.slice(pos);
-            term.currentLine = term.currentLine.slice(0, pos) + e + restOfLine;
-            term.write(e);
+            term.currentLine =
+              term.currentLine.slice(0, pos) + input + restOfLine;
+            term.write(input);
             if (restOfLine.length > 0) {
               term.write(restOfLine);
               term.write("\x1b[D".repeat(restOfLine.length));
diff --git a/tests/terminal.test.js b/tests/terminal.test.js
index 1a046e51..d08eaa9b 100644
--- a/tests/terminal.test.js
+++ b/tests/terminal.test.js
@@ -95,6 +95,83 @@ describe("runRootTerminal", () => {
     expect(term.scrollToBottom).toHaveBeenCalled();
   });
 
+  it("inserts multi-character pasted input", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm();
+
+    runRootTerminal(term);
+    term._onData("help");
+
+    expect(term.currentLine).toBe("help");
+    expect(term.write).toHaveBeenCalledWith("help");
+  });
+
+  it("inserts pasted input at the cursor before trailing text", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm({
+      currentLine: "heo",
+      pos: vi.fn(() => 2),
+    });
+
+    runRootTerminal(term);
+    term._onData("ll");
+
+    expect(term.currentLine).toBe("hello");
+    expect(term.write).toHaveBeenNthCalledWith(1, "ll");
+    expect(term.write).toHaveBeenNthCalledWith(2, "o");
+    expect(term.write).toHaveBeenNthCalledWith(3, "\x1b[D");
+  });
+
+  it("converts pasted newlines to spaces without executing the command", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm();
+
+    runRootTerminal(term);
+    term._onData("whois\nroot");
+
+    expect(term.currentLine).toBe("whois root");
+    expect(term.write).toHaveBeenCalledWith("whois root");
+    expect(term.executeCommandLine).not.toHaveBeenCalled();
+  });
+
+  it("ignores pasted control-only input", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm();
+
+    runRootTerminal(term);
+    term._onData("\u0000\u001f\u007f");
+
+    expect(term.currentLine).toBe("");
+    expect(term.write).not.toHaveBeenCalled();
+    expect(term.executeCommandLine).not.toHaveBeenCalled();
+  });
+
+  it("ignores pasted input while locked", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm();
+
+    runRootTerminal(term);
+    term.locked = true;
+    term._onData("help");
+
+    expect(term.currentLine).toBe("");
+    expect(term.write).not.toHaveBeenCalled();
+    expect(term.scrollToBottom).not.toHaveBeenCalled();
+  });
+
+  it("ignores pasted input while busy", () => {
+    const { runRootTerminal } = loadTerminalScript();
+    const term = createTerm();
+
+    runRootTerminal(term);
+    term.busy = true;
+    term._onData("help");
+
+    expect(term.currentLine).toBe("");
+    expect(term.write).not.toHaveBeenCalled();
+    expect(term.scrollToBottom).not.toHaveBeenCalled();
+  });
+
   it("debounces resize handling with requestAnimationFrame", () => {
     const rafCallbacks = [];
     const requestAnimationFrame = vi.fn((callback) => {