fix(coding-agent): fixed keybindings and input handling for TUI editor and Cursor provider

- Changed temporary model selector keybinding from Ctrl+Y to Alt+P to avoid conflicts.
- Fixed Alt+Enter to insert newline when not streaming instead of submitting.
- Fixed Cursor provider to avoid advertising Edit tool, using full-file Write instead.
- Added Ctrl+Enter support for inserting newlines in TUI editor using Kitty and legacy terminal formats.
- Removed duplicate Ctrl+Y handler and refactored input controller to use trimmedText variable.

packages/coding-agent/CHANGELOG.md

@@ -1,15 +1,23 @@
 # Changelog
 
 ## [Unreleased]
+
 ### Added
 
 - Added grouped display for consecutive Read tool calls, showing multiple file reads in a compact tree view
 
 ### Changed
 
+- Changed temporary model selector keybinding from Ctrl+Y to Alt+P
 - Changed expand hint text from "Ctrl+O to expand" to "Ctrl+O for more"
 - Changed Read tool result display to hide content by default, showing only file path and status
 
+### Fixed
+
+- Fixed Alt+Enter to insert a newline when not streaming, instead of submitting the message
+- Fixed Alt+Enter inserting a new line when not streaming instead of submitting a message
+- Fixed Cursor provider to avoid advertising the Edit tool, relying on full-file Write operations instead
+
 ## [4.3.2] - 2026-01-11
 ### Changed
 

packages/coding-agent/src/core/sdk.ts

@@ -855,6 +855,9 @@ export async function createAgentSession(options: CreateAgentSessionOptions = {}
 			toolRegistry.set(tool.name, wrapToolWithExtensions(tool, extensionRunner));
 		}
 	}
+	if (model?.provider === "cursor") {
+		toolRegistry.delete("edit");
+	}
 	time("combineTools");
 
 	let cursorEventEmitter: ((event: AgentEvent) => void) | undefined;

packages/coding-agent/src/modes/interactive/components/custom-editor.ts

@@ -9,7 +9,6 @@ import {
 	isCtrlP,
 	isCtrlT,
 	isCtrlV,
-	isCtrlY,
 	isCtrlZ,
 	isEscape,
 	isShiftCtrlP,
@@ -36,7 +35,7 @@ export class CustomEditor extends Editor {
 	public onCtrlZ?: () => void;
 	public onQuestionMark?: () => void;
 	public onCapsLock?: () => void;
-	public onCtrlY?: () => void;
+	public onAltP?: () => void;
 	/** Called when Ctrl+V is pressed. Returns true if handled (image found), false to fall through to text paste. */
 	public onCtrlV?: () => Promise<boolean>;
 	/** Called when Alt+Up is pressed (dequeue keybinding). */
@@ -84,9 +83,9 @@ export class CustomEditor extends Editor {
 			return;
 		}
 
-		// Intercept Ctrl+Y for voice input
-		if (isCtrlY(data) && this.onCtrlY) {
-			this.onCtrlY();
+		// Intercept Alt+P for quick model switching
+		if (matchesKey(data, "alt+p") && this.onAltP) {
+			this.onAltP();
 			return;
 		}
 
@@ -102,12 +101,6 @@ export class CustomEditor extends Editor {
 			return;
 		}
 
-		// Intercept Ctrl+Y for role-based model cycling
-		if (isCtrlY(data) && this.onCtrlY) {
-			this.onCtrlY();
-			return;
-		}
-
 		// Intercept Ctrl+L for model selector
 		if (isCtrlL(data) && this.onCtrlL) {
 			this.onCtrlL();

packages/coding-agent/src/modes/interactive/controllers/command-controller.ts

@@ -334,7 +334,7 @@ export class CommandController {
 | \`Shift+Tab\` | Cycle thinking level |
 | \`Ctrl+P\` | Cycle role models (slow/default/smol) |
 | \`Shift+Ctrl+P\` | Cycle role models (temporary) |
-| \`Ctrl+Y\` | Select model (temporary) |
+| \`Alt+P\` | Select model (temporary) |
 | \`Ctrl+L\` | Select model (set roles) |
 | \`Ctrl+R\` | Search prompt history |
 | \`Ctrl+O\` | Toggle tool output expansion |

packages/coding-agent/src/modes/interactive/controllers/input-controller.ts

@@ -60,7 +60,7 @@ export class InputController {
 		this.ctx.editor.onShiftTab = () => this.cycleThinkingLevel();
 		this.ctx.editor.onCtrlP = () => this.cycleRoleModel();
 		this.ctx.editor.onShiftCtrlP = () => this.cycleRoleModel({ temporary: true });
-		this.ctx.editor.onCtrlY = () => this.ctx.showModelSelector({ temporaryOnly: true });
+		this.ctx.editor.onAltP = () => this.ctx.showModelSelector({ temporaryOnly: true });
 
 		// Global debug handler on TUI (works regardless of focus)
 		this.ctx.ui.onDebug = () => this.ctx.handleDebugCommand();
@@ -85,28 +85,34 @@ export class InputController {
 		};
 
 		this.ctx.editor.onAltEnter = async (text: string) => {
-			text = text.trim();
-			if (!text) return;
+			const trimmedText = text.trim();
 
 			// Queue follow-up messages while compaction is running
 			if (this.ctx.session.isCompacting) {
-				this.ctx.queueCompactionMessage(text, "followUp");
+				if (!trimmedText) {
+					this.ctx.editor.handleInput("\n");
+					return;
+				}
+				this.ctx.queueCompactionMessage(trimmedText, "followUp");
 				return;
 			}
 
-			// Alt+Enter queues a follow-up message (waits until agent finishes)
-			// This handles extension commands (execute immediately), prompt template expansion, and queueing
+			// Alt+Enter queues a follow-up message while streaming
 			if (this.ctx.session.isStreaming) {
-				this.ctx.editor.addToHistory(text);
+				if (!trimmedText) {
+					this.ctx.editor.handleInput("\n");
+					return;
+				}
+				this.ctx.editor.addToHistory(trimmedText);
 				this.ctx.editor.setText("");
-				await this.ctx.session.prompt(text, { streamingBehavior: "followUp" });
+				await this.ctx.session.prompt(trimmedText, { streamingBehavior: "followUp" });
 				this.ctx.updatePendingMessagesDisplay();
 				this.ctx.ui.requestRender();
+				return;
 			}
-			// If not streaming, Alt+Enter acts like regular Enter (trigger onSubmit)
-			else if (this.ctx.editor.onSubmit) {
-				this.ctx.editor.onSubmit(text);
-			}
+
+			// Default behavior: insert a new line
+			this.ctx.editor.handleInput("\n");
 		};
 	}
 

packages/tui/CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 
 ## [Unreleased]
+### Fixed
+
+- Fixed Ctrl+Enter sequences to insert new lines in the editor
 
 ## [4.3.2] - 2026-01-11
 

packages/tui/src/components/editor.ts

@@ -708,6 +708,8 @@ export class Editor implements Component {
 		// New line shortcuts (but not plain LF/CR which should be submit)
 		else if (
 			(data.charCodeAt(0) === 10 && data.length > 1) || // Ctrl+Enter with modifiers
+			data === "\x1b[13;5u" || // Ctrl+Enter (Kitty protocol)
+			data === "\x1b[27;5;13~" || // Ctrl+Enter (legacy format)
 			data === "\x1b\r" || // Option+Enter in some terminals (legacy)
 			data === "\x1b[13;2~" || // Shift+Enter in some terminals (legacy format)
 			isShiftEnter(data) || // Shift+Enter (Kitty protocol, handles lock bits)