fix(tui): support modified enter for multiline input

ui-tui/packages/hermes-ink/src/ink/events/cmd-shortcuts.test.ts

@@ -11,7 +11,25 @@ function parseOne(sequence: string) {
   return keys[0]!
 }
 
-describe('InputEvent macOS command modifiers', () => {
+describe('enhanced keyboard modifier parsing', () => {
+  it('detects modified Enter sequences for multiline composer shortcuts', () => {
+    const shiftEnter = new InputEvent(parseOne('\u001b[13;2u'))
+    const ctrlEnter = new InputEvent(parseOne('\u001b[13;5u'))
+    const modifyOtherShiftEnter = new InputEvent(parseOne('\u001b[27;2;13~'))
+
+    expect(shiftEnter.key.return).toBe(true)
+    expect(shiftEnter.key.shift).toBe(true)
+    expect(shiftEnter.input).toBe('')
+
+    expect(ctrlEnter.key.return).toBe(true)
+    expect(ctrlEnter.key.ctrl).toBe(true)
+    expect(ctrlEnter.input).toBe('')
+
+    expect(modifyOtherShiftEnter.key.return).toBe(true)
+    expect(modifyOtherShiftEnter.key.shift).toBe(true)
+    expect(modifyOtherShiftEnter.input).toBe('')
+  })
+
   it('preserves Cmd as super for kitty keyboard CSI-u sequences', () => {
     const parsed = parseOne('\u001b[99;9u')
     const event = new InputEvent(parsed)

ui-tui/packages/hermes-ink/src/ink/events/input-event.ts

@@ -116,11 +116,15 @@ function parseKey(keypress: ParsedKey): [Key, string] {
       // so the raw "[57358u" doesn't leak into the prompt. See #38781.
       input = ''
     } else {
-      // 'space' → ' '; 'escape' → '' (key.escape carries it;
-      // processedAsSpecialSequence bypasses the nonAlphanumericKeys
-      // clear below, so we must handle it explicitly here);
-      // otherwise use key name.
-      input = keypress.name === 'space' ? ' ' : keypress.name === 'escape' ? '' : keypress.name
+      // 'space' → ' '; functional keys like Enter/Escape carry their state
+      // through key.return/key.escape, and processedAsSpecialSequence bypasses
+      // the nonAlphanumericKeys clear below, so clear them explicitly here.
+      input =
+        keypress.name === 'space'
+          ? ' '
+          : keypress.name === 'return' || keypress.name === 'escape'
+            ? ''
+            : keypress.name
     }
 
     processedAsSpecialSequence = true
@@ -138,7 +142,12 @@ function parseKey(keypress: ParsedKey): [Key, string] {
       // guards against future terminal behavior.
       input = ''
     } else {
-      input = keypress.name === 'space' ? ' ' : keypress.name === 'escape' ? '' : keypress.name
+      input =
+        keypress.name === 'space'
+          ? ' '
+          : keypress.name === 'return' || keypress.name === 'escape'
+            ? ''
+            : keypress.name
     }
 
     processedAsSpecialSequence = true

ui-tui/packages/hermes-ink/src/ink/terminal.ts

@@ -176,7 +176,7 @@ export function isXtermJs(): boolean {
 // in xterm.js-based terminals like VS Code). tmux is allowlisted because it
 // accepts modifyOtherKeys and doesn't forward the kitty sequence to the outer
 // terminal.
-const EXTENDED_KEYS_TERMINALS = ['iTerm.app', 'kitty', 'WezTerm', 'ghostty', 'tmux', 'windows-terminal']
+const EXTENDED_KEYS_TERMINALS = ['iTerm.app', 'kitty', 'WezTerm', 'ghostty', 'tmux', 'windows-terminal', 'vscode']
 
 /** True if this terminal correctly handles extended key reporting
  *  (Kitty keyboard protocol + xterm modifyOtherKeys). */

ui-tui/src/components/textInput.tsx

@@ -700,7 +700,7 @@ export function TextInput({
       }
 
       if (k.return) {
-        if (k.shift || (isMac ? isActionMod(k) : k.meta)) {
+        if (k.shift || k.ctrl || (isMac ? isActionMod(k) : k.meta)) {
           flushParentChange()
           commit(ins(vRef.current, curRef.current, '\n'), curRef.current + 1)
         } else {