feat: configurable keybindings for all editor and app actions

All keybindings configurable via ~/.pi/agent/keybindings.json

Editor actions:
- cursorUp, cursorDown, cursorLeft, cursorRight
- cursorWordLeft, cursorWordRight, cursorLineStart, cursorLineEnd
- deleteCharBackward, deleteCharForward, deleteWordBackward
- deleteToLineStart, deleteToLineEnd
- newLine, submit, tab
- selectUp, selectDown, selectConfirm, selectCancel

App actions:
- interrupt, clear, exit, suspend
- cycleThinkingLevel, cycleModelForward, cycleModelBackward
- selectModel, expandTools, toggleThinking, externalEditor

Also adds support for numpad Enter key (Kitty protocol codepoint 57414
and SS3 M sequence)

Example emacs-style keybindings.json:
{
  "cursorUp": ["up", "ctrl+p"],
  "cursorDown": ["down", "ctrl+n"],
  "cursorLeft": ["left", "ctrl+b"],
  "cursorRight": ["right", "ctrl+f"],
  "deleteCharForward": ["delete", "ctrl+d"],
  "cycleModelForward": "ctrl+o"
}
This commit is contained in:
Helmut Januschka 2026-01-02 17:31:54 +01:00
parent 5f91baa29e
commit 8f2682578b
23 changed files with 949 additions and 1048 deletions

View file

@ -1,87 +1,42 @@
/**
* Kitty keyboard protocol key sequence helpers.
*
* The Kitty keyboard protocol sends enhanced escape sequences in the format:
* \x1b[<codepoint>;<modifier>u
*
* Modifier bits (before adding 1 for transmission):
* - Shift: 1 (value 2)
* - Alt: 2 (value 3)
* - Ctrl: 4 (value 5)
* - Super: 8 (value 9)
* - Hyper: 16
* - Meta: 32
* - Caps_Lock: 64
* - Num_Lock: 128
* Keyboard input handling for terminal applications.
*
* Supports both legacy terminal sequences and Kitty keyboard protocol.
* See: https://sw.kovidgoyal.net/kitty/keyboard-protocol/
*
* NOTE: Some terminals (e.g., Ghostty on Linux) include lock key states
* (Caps Lock, Num Lock) in the modifier field. We mask these out when
* checking for key combinations since they shouldn't affect behavior.
* API:
* - matchesKey(data, keyId) - Check if input matches a key identifier
* - parseKey(data) - Parse input and return the key identifier
*/
// Common codepoints
const CODEPOINTS = {
// Letters (lowercase ASCII)
a: 97,
c: 99,
d: 100,
e: 101,
g: 103,
k: 107,
l: 108,
o: 111,
p: 112,
t: 116,
u: 117,
w: 119,
z: 122,
// =============================================================================
// Constants
// =============================================================================
// Special keys
const MODIFIERS = {
shift: 1,
alt: 2,
ctrl: 4,
} as const;
const LOCK_MASK = 64 + 128; // Caps Lock + Num Lock
const CODEPOINTS = {
escape: 27,
tab: 9,
enter: 13,
space: 32,
backspace: 127,
kpEnter: 57414, // Numpad Enter (Kitty protocol)
} as const;
// Lock key bits to ignore when matching (Caps Lock + Num Lock)
const LOCK_MASK = 64 + 128; // 192
// Modifier bits (before adding 1)
const MODIFIERS = {
shift: 1,
alt: 2,
ctrl: 4,
super: 8,
const ARROW_CODEPOINTS = {
up: -1,
down: -2,
right: -3,
left: -4,
} as const;
/**
* Build a Kitty keyboard protocol sequence for a key with modifier.
*/
function kittySequence(codepoint: number, modifier: number): string {
return `\x1b[${codepoint};${modifier + 1}u`;
}
/**
* Parsed Kitty keyboard protocol sequence.
*/
interface ParsedKittySequence {
codepoint: number;
modifier: number; // Actual modifier bits (after subtracting 1)
}
/**
* Parse a Kitty keyboard protocol sequence.
* Handles formats:
* - \x1b[<codepoint>u (no modifier)
* - \x1b[<codepoint>;<modifier>u (with modifier)
* - \x1b[1;<modifier>A/B/C/D (arrow keys with modifier)
*
* Returns null if not a valid Kitty sequence.
*/
// Virtual codepoints for functional keys (negative to avoid conflicts)
const FUNCTIONAL_CODEPOINTS = {
delete: -10,
insert: -11,
@ -91,8 +46,17 @@ const FUNCTIONAL_CODEPOINTS = {
end: -15,
} as const;
// =============================================================================
// Kitty Protocol Parsing
// =============================================================================
interface ParsedKittySequence {
codepoint: number;
modifier: number;
}
function parseKittySequence(data: string): ParsedKittySequence | null {
// Match CSI u format: \x1b[<num>u or \x1b[<num>;<mod>u
// CSI u format: \x1b[<num>u or \x1b[<num>;<mod>u
const csiUMatch = data.match(/^\x1b\[(\d+)(?:;(\d+))?u$/);
if (csiUMatch) {
const codepoint = parseInt(csiUMatch[1]!, 10);
@ -100,30 +64,26 @@ function parseKittySequence(data: string): ParsedKittySequence | null {
return { codepoint, modifier: modValue - 1 };
}
// Match arrow keys with modifier: \x1b[1;<mod>A/B/C/D
// Arrow keys with modifier: \x1b[1;<mod>A/B/C/D
const arrowMatch = data.match(/^\x1b\[1;(\d+)([ABCD])$/);
if (arrowMatch) {
const modValue = parseInt(arrowMatch[1]!, 10);
// Map arrow letters to virtual codepoints for easier matching
const arrowCodes: Record<string, number> = { A: -1, B: -2, C: -3, D: -4 };
const codepoint = arrowCodes[arrowMatch[2]!]!;
return { codepoint, modifier: modValue - 1 };
return { codepoint: arrowCodes[arrowMatch[2]!]!, modifier: modValue - 1 };
}
// Match functional keys with ~ terminator: \x1b[<num>~ or \x1b[<num>;<mod>~
// DELETE=3, INSERT=2, PAGEUP=5, PAGEDOWN=6, etc.
// Functional keys: \x1b[<num>~ or \x1b[<num>;<mod>~
const funcMatch = data.match(/^\x1b\[(\d+)(?:;(\d+))?~$/);
if (funcMatch) {
const keyNum = parseInt(funcMatch[1]!, 10);
const modValue = funcMatch[2] ? parseInt(funcMatch[2], 10) : 1;
// Map functional key numbers to virtual codepoints
const funcCodes: Record<number, number> = {
2: FUNCTIONAL_CODEPOINTS.insert,
3: FUNCTIONAL_CODEPOINTS.delete,
5: FUNCTIONAL_CODEPOINTS.pageUp,
6: FUNCTIONAL_CODEPOINTS.pageDown,
7: FUNCTIONAL_CODEPOINTS.home, // Alternative home
8: FUNCTIONAL_CODEPOINTS.end, // Alternative end
7: FUNCTIONAL_CODEPOINTS.home,
8: FUNCTIONAL_CODEPOINTS.end,
};
const codepoint = funcCodes[keyNum];
if (codepoint !== undefined) {
@ -131,7 +91,7 @@ function parseKittySequence(data: string): ParsedKittySequence | null {
}
}
// Match Home/End with modifier: \x1b[1;<mod>H/F
// Home/End with modifier: \x1b[1;<mod>H/F
const homeEndMatch = data.match(/^\x1b\[1;(\d+)([HF])$/);
if (homeEndMatch) {
const modValue = parseInt(homeEndMatch[1]!, 10);
@ -142,434 +102,278 @@ function parseKittySequence(data: string): ParsedKittySequence | null {
return null;
}
/**
* Check if a Kitty sequence matches the expected codepoint and modifier,
* ignoring lock key bits (Caps Lock, Num Lock).
*/
function matchesKittySequence(data: string, expectedCodepoint: number, expectedModifier: number): boolean {
const parsed = parseKittySequence(data);
if (!parsed) return false;
// Mask out lock bits from both sides for comparison
const actualMod = parsed.modifier & ~LOCK_MASK;
const expectedMod = expectedModifier & ~LOCK_MASK;
return parsed.codepoint === expectedCodepoint && actualMod === expectedMod;
}
// Pre-built sequences for common key combinations
export const Keys = {
// Ctrl+<letter> combinations
CTRL_A: kittySequence(CODEPOINTS.a, MODIFIERS.ctrl),
CTRL_C: kittySequence(CODEPOINTS.c, MODIFIERS.ctrl),
CTRL_D: kittySequence(CODEPOINTS.d, MODIFIERS.ctrl),
CTRL_E: kittySequence(CODEPOINTS.e, MODIFIERS.ctrl),
CTRL_G: kittySequence(CODEPOINTS.g, MODIFIERS.ctrl),
CTRL_K: kittySequence(CODEPOINTS.k, MODIFIERS.ctrl),
CTRL_L: kittySequence(CODEPOINTS.l, MODIFIERS.ctrl),
CTRL_O: kittySequence(CODEPOINTS.o, MODIFIERS.ctrl),
CTRL_P: kittySequence(CODEPOINTS.p, MODIFIERS.ctrl),
CTRL_T: kittySequence(CODEPOINTS.t, MODIFIERS.ctrl),
CTRL_U: kittySequence(CODEPOINTS.u, MODIFIERS.ctrl),
CTRL_W: kittySequence(CODEPOINTS.w, MODIFIERS.ctrl),
CTRL_Z: kittySequence(CODEPOINTS.z, MODIFIERS.ctrl),
// =============================================================================
// Generic Key Matching
// =============================================================================
// Enter combinations
SHIFT_ENTER: kittySequence(CODEPOINTS.enter, MODIFIERS.shift),
ALT_ENTER: kittySequence(CODEPOINTS.enter, MODIFIERS.alt),
CTRL_ENTER: kittySequence(CODEPOINTS.enter, MODIFIERS.ctrl),
function rawCtrlChar(letter: string): string {
const code = letter.toLowerCase().charCodeAt(0) - 96;
return String.fromCharCode(code);
}
// Tab combinations
SHIFT_TAB: kittySequence(CODEPOINTS.tab, MODIFIERS.shift),
// Backspace combinations
ALT_BACKSPACE: kittySequence(CODEPOINTS.backspace, MODIFIERS.alt),
} as const;
/**
* Check if input matches a Kitty protocol Ctrl+<key> sequence.
* Ignores lock key bits (Caps Lock, Num Lock).
* @param data - The input data to check
* @param key - Single lowercase letter (e.g., 'c' for Ctrl+C)
*/
export function isKittyCtrl(data: string, key: string): boolean {
if (key.length !== 1) return false;
const codepoint = key.charCodeAt(0);
// Check exact match first (fast path)
if (data === kittySequence(codepoint, MODIFIERS.ctrl)) return true;
// Check with lock bits masked out
return matchesKittySequence(data, codepoint, MODIFIERS.ctrl);
function parseKeyId(keyId: string): { key: string; ctrl: boolean; shift: boolean; alt: boolean } | null {
const parts = keyId.toLowerCase().split("+");
const key = parts[parts.length - 1];
if (!key) return null;
return {
key,
ctrl: parts.includes("ctrl"),
shift: parts.includes("shift"),
alt: parts.includes("alt"),
};
}
/**
* Check if input matches a Kitty protocol key sequence with specific modifier.
* Ignores lock key bits (Caps Lock, Num Lock).
* @param data - The input data to check
* @param codepoint - ASCII codepoint of the key
* @param modifier - Modifier value (use MODIFIERS constants)
* Match input data against a key identifier string.
*
* Supported key identifiers:
* - Single keys: "escape", "tab", "enter", "backspace", "delete", "home", "end", "space"
* - Arrow keys: "up", "down", "left", "right"
* - Ctrl combinations: "ctrl+c", "ctrl+z", etc.
* - Shift combinations: "shift+tab", "shift+enter"
* - Alt combinations: "alt+enter", "alt+backspace"
* - Combined modifiers: "shift+ctrl+p", "ctrl+alt+x"
*
* @param data - Raw input data from terminal
* @param keyId - Key identifier string (e.g., "ctrl+c", "escape")
*/
export function isKittyKey(data: string, codepoint: number, modifier: number): boolean {
// Check exact match first (fast path)
if (data === kittySequence(codepoint, modifier)) return true;
// Check with lock bits masked out
return matchesKittySequence(data, codepoint, modifier);
}
export function matchesKey(data: string, keyId: string): boolean {
const parsed = parseKeyId(keyId);
if (!parsed) return false;
// Raw control character codes
const RAW = {
CTRL_A: "\x01",
CTRL_C: "\x03",
CTRL_D: "\x04",
CTRL_E: "\x05",
CTRL_G: "\x07",
CTRL_K: "\x0b",
CTRL_L: "\x0c",
CTRL_O: "\x0f",
CTRL_P: "\x10",
CTRL_T: "\x14",
CTRL_U: "\x15",
CTRL_W: "\x17",
CTRL_Z: "\x1a",
ALT_BACKSPACE: "\x1b\x7f",
SHIFT_TAB: "\x1b[Z",
} as const;
const { key, ctrl, shift, alt } = parsed;
let modifier = 0;
if (shift) modifier |= MODIFIERS.shift;
if (alt) modifier |= MODIFIERS.alt;
if (ctrl) modifier |= MODIFIERS.ctrl;
/**
* Check if input matches Ctrl+A (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlA(data: string): boolean {
return data === RAW.CTRL_A || data === Keys.CTRL_A || matchesKittySequence(data, CODEPOINTS.a, MODIFIERS.ctrl);
switch (key) {
case "escape":
case "esc":
if (modifier !== 0) return false;
return data === "\x1b" || matchesKittySequence(data, CODEPOINTS.escape, 0);
case "space":
if (modifier === 0) {
return data === " " || matchesKittySequence(data, CODEPOINTS.space, 0);
}
return matchesKittySequence(data, CODEPOINTS.space, modifier);
case "tab":
if (shift && !ctrl && !alt) {
return data === "\x1b[Z" || matchesKittySequence(data, CODEPOINTS.tab, MODIFIERS.shift);
}
if (modifier === 0) {
return data === "\t" || matchesKittySequence(data, CODEPOINTS.tab, 0);
}
return matchesKittySequence(data, CODEPOINTS.tab, modifier);
case "enter":
case "return":
if (shift && !ctrl && !alt) {
return (
matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.shift) ||
matchesKittySequence(data, CODEPOINTS.kpEnter, MODIFIERS.shift)
);
}
if (alt && !ctrl && !shift) {
return (
data === "\x1b\r" ||
matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.alt) ||
matchesKittySequence(data, CODEPOINTS.kpEnter, MODIFIERS.alt)
);
}
if (modifier === 0) {
return (
data === "\r" ||
data === "\x1bOM" || // SS3 M (numpad enter in some terminals)
matchesKittySequence(data, CODEPOINTS.enter, 0) ||
matchesKittySequence(data, CODEPOINTS.kpEnter, 0)
);
}
return (
matchesKittySequence(data, CODEPOINTS.enter, modifier) ||
matchesKittySequence(data, CODEPOINTS.kpEnter, modifier)
);
case "backspace":
if (alt && !ctrl && !shift) {
return data === "\x1b\x7f" || matchesKittySequence(data, CODEPOINTS.backspace, MODIFIERS.alt);
}
if (modifier === 0) {
return data === "\x7f" || data === "\x08" || matchesKittySequence(data, CODEPOINTS.backspace, 0);
}
return matchesKittySequence(data, CODEPOINTS.backspace, modifier);
case "delete":
if (modifier === 0) {
return data === "\x1b[3~" || matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, 0);
}
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, modifier);
case "home":
if (modifier === 0) {
return (
data === "\x1b[H" ||
data === "\x1b[1~" ||
data === "\x1b[7~" ||
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.home, 0)
);
}
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.home, modifier);
case "end":
if (modifier === 0) {
return (
data === "\x1b[F" ||
data === "\x1b[4~" ||
data === "\x1b[8~" ||
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.end, 0)
);
}
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.end, modifier);
case "up":
if (modifier === 0) {
return data === "\x1b[A" || matchesKittySequence(data, ARROW_CODEPOINTS.up, 0);
}
return matchesKittySequence(data, ARROW_CODEPOINTS.up, modifier);
case "down":
if (modifier === 0) {
return data === "\x1b[B" || matchesKittySequence(data, ARROW_CODEPOINTS.down, 0);
}
return matchesKittySequence(data, ARROW_CODEPOINTS.down, modifier);
case "left":
if (alt && !ctrl && !shift) {
return (
data === "\x1b[1;3D" ||
data === "\x1bb" ||
matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.alt)
);
}
if (ctrl && !alt && !shift) {
return data === "\x1b[1;5D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.ctrl);
}
if (modifier === 0) {
return data === "\x1b[D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, 0);
}
return matchesKittySequence(data, ARROW_CODEPOINTS.left, modifier);
case "right":
if (alt && !ctrl && !shift) {
return (
data === "\x1b[1;3C" ||
data === "\x1bf" ||
matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.alt)
);
}
if (ctrl && !alt && !shift) {
return data === "\x1b[1;5C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.ctrl);
}
if (modifier === 0) {
return data === "\x1b[C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, 0);
}
return matchesKittySequence(data, ARROW_CODEPOINTS.right, modifier);
}
// Handle single letter keys (a-z)
if (key.length === 1 && key >= "a" && key <= "z") {
const codepoint = key.charCodeAt(0);
if (ctrl && !shift && !alt) {
const raw = rawCtrlChar(key);
if (data === raw) return true;
if (data.length > 0 && data.charCodeAt(0) === raw.charCodeAt(0)) return true;
return matchesKittySequence(data, codepoint, MODIFIERS.ctrl);
}
if (ctrl && shift && !alt) {
return matchesKittySequence(data, codepoint, MODIFIERS.shift + MODIFIERS.ctrl);
}
if (modifier !== 0) {
return matchesKittySequence(data, codepoint, modifier);
}
return data === key;
}
return false;
}
/**
* Check if input matches Ctrl+C (raw byte or Kitty protocol).
* Ignores lock key bits.
* Parse input data and return the key identifier if recognized.
*
* @param data - Raw input data from terminal
* @returns Key identifier string (e.g., "ctrl+c") or undefined
*/
export function isCtrlC(data: string): boolean {
return data === RAW.CTRL_C || data === Keys.CTRL_C || matchesKittySequence(data, CODEPOINTS.c, MODIFIERS.ctrl);
}
export function parseKey(data: string): string | undefined {
const kitty = parseKittySequence(data);
if (kitty) {
const { codepoint, modifier } = kitty;
const mods: string[] = [];
const effectiveMod = modifier & ~LOCK_MASK;
if (effectiveMod & MODIFIERS.shift) mods.push("shift");
if (effectiveMod & MODIFIERS.ctrl) mods.push("ctrl");
if (effectiveMod & MODIFIERS.alt) mods.push("alt");
/**
* Check if input matches Ctrl+D (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlD(data: string): boolean {
return data === RAW.CTRL_D || data === Keys.CTRL_D || matchesKittySequence(data, CODEPOINTS.d, MODIFIERS.ctrl);
}
let keyName: string | undefined;
if (codepoint === CODEPOINTS.escape) keyName = "escape";
else if (codepoint === CODEPOINTS.tab) keyName = "tab";
else if (codepoint === CODEPOINTS.enter || codepoint === CODEPOINTS.kpEnter) keyName = "enter";
else if (codepoint === CODEPOINTS.space) keyName = "space";
else if (codepoint === CODEPOINTS.backspace) keyName = "backspace";
else if (codepoint === FUNCTIONAL_CODEPOINTS.delete) keyName = "delete";
else if (codepoint === FUNCTIONAL_CODEPOINTS.home) keyName = "home";
else if (codepoint === FUNCTIONAL_CODEPOINTS.end) keyName = "end";
else if (codepoint === ARROW_CODEPOINTS.up) keyName = "up";
else if (codepoint === ARROW_CODEPOINTS.down) keyName = "down";
else if (codepoint === ARROW_CODEPOINTS.left) keyName = "left";
else if (codepoint === ARROW_CODEPOINTS.right) keyName = "right";
else if (codepoint >= 97 && codepoint <= 122) keyName = String.fromCharCode(codepoint);
/**
* Check if input matches Ctrl+E (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlE(data: string): boolean {
return data === RAW.CTRL_E || data === Keys.CTRL_E || matchesKittySequence(data, CODEPOINTS.e, MODIFIERS.ctrl);
}
if (keyName) {
return mods.length > 0 ? `${mods.join("+")}+${keyName}` : keyName;
}
}
/**
* Check if input matches Ctrl+G (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlG(data: string): boolean {
return data === RAW.CTRL_G || data === Keys.CTRL_G || matchesKittySequence(data, CODEPOINTS.g, MODIFIERS.ctrl);
}
// Legacy sequences
if (data === "\x1b") return "escape";
if (data === "\t") return "tab";
if (data === "\r" || data === "\x1bOM") return "enter";
if (data === " ") return "space";
if (data === "\x7f" || data === "\x08") return "backspace";
if (data === "\x1b[Z") return "shift+tab";
if (data === "\x1b\r") return "alt+enter";
if (data === "\x1b\x7f") return "alt+backspace";
if (data === "\x1b[A") return "up";
if (data === "\x1b[B") return "down";
if (data === "\x1b[C") return "right";
if (data === "\x1b[D") return "left";
if (data === "\x1b[H") return "home";
if (data === "\x1b[F") return "end";
if (data === "\x1b[3~") return "delete";
/**
* Check if input matches Ctrl+K (raw byte or Kitty protocol).
* Ignores lock key bits.
* Also checks if first byte is 0x0b for compatibility with terminals
* that may send trailing bytes.
*/
export function isCtrlK(data: string): boolean {
return (
data === RAW.CTRL_K ||
(data.length > 0 && data.charCodeAt(0) === 0x0b) ||
data === Keys.CTRL_K ||
matchesKittySequence(data, CODEPOINTS.k, MODIFIERS.ctrl)
);
}
// Raw Ctrl+letter
if (data.length === 1) {
const code = data.charCodeAt(0);
if (code >= 1 && code <= 26) {
return `ctrl+${String.fromCharCode(code + 96)}`;
}
if (code >= 32 && code <= 126) {
return data;
}
}
/**
* Check if input matches Ctrl+L (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlL(data: string): boolean {
return data === RAW.CTRL_L || data === Keys.CTRL_L || matchesKittySequence(data, CODEPOINTS.l, MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+O (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlO(data: string): boolean {
return data === RAW.CTRL_O || data === Keys.CTRL_O || matchesKittySequence(data, CODEPOINTS.o, MODIFIERS.ctrl);
}
/**
* Check if input matches Shift+Ctrl+O (Kitty protocol only).
* Ignores lock key bits.
*/
export function isShiftCtrlO(data: string): boolean {
return matchesKittySequence(data, CODEPOINTS.o, MODIFIERS.shift + MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+P (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlP(data: string): boolean {
return data === RAW.CTRL_P || data === Keys.CTRL_P || matchesKittySequence(data, CODEPOINTS.p, MODIFIERS.ctrl);
}
/**
* Check if input matches Shift+Ctrl+P (Kitty protocol only).
* Ignores lock key bits.
*/
export function isShiftCtrlP(data: string): boolean {
return matchesKittySequence(data, CODEPOINTS.p, MODIFIERS.shift + MODIFIERS.ctrl);
}
/**
* Check if input matches Shift+Ctrl+D (Kitty protocol only, for debug).
* Ignores lock key bits.
*/
export function isShiftCtrlD(data: string): boolean {
return matchesKittySequence(data, CODEPOINTS.d, MODIFIERS.shift + MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+T (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlT(data: string): boolean {
return data === RAW.CTRL_T || data === Keys.CTRL_T || matchesKittySequence(data, CODEPOINTS.t, MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+U (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlU(data: string): boolean {
return data === RAW.CTRL_U || data === Keys.CTRL_U || matchesKittySequence(data, CODEPOINTS.u, MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+W (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlW(data: string): boolean {
return data === RAW.CTRL_W || data === Keys.CTRL_W || matchesKittySequence(data, CODEPOINTS.w, MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+Z (raw byte or Kitty protocol).
* Ignores lock key bits.
*/
export function isCtrlZ(data: string): boolean {
return data === RAW.CTRL_Z || data === Keys.CTRL_Z || matchesKittySequence(data, CODEPOINTS.z, MODIFIERS.ctrl);
}
/**
* Check if input matches Alt+Backspace (legacy or Kitty protocol).
* Ignores lock key bits.
*/
export function isAltBackspace(data: string): boolean {
return (
data === RAW.ALT_BACKSPACE ||
data === Keys.ALT_BACKSPACE ||
matchesKittySequence(data, CODEPOINTS.backspace, MODIFIERS.alt)
);
}
/**
* Check if input matches Shift+Tab (legacy or Kitty protocol).
* Ignores lock key bits.
*/
export function isShiftTab(data: string): boolean {
return (
data === RAW.SHIFT_TAB || data === Keys.SHIFT_TAB || matchesKittySequence(data, CODEPOINTS.tab, MODIFIERS.shift)
);
}
/**
* Check if input matches the Escape key (raw byte or Kitty protocol).
* Raw: \x1b (single byte)
* Kitty: \x1b[27u (codepoint 27 = escape)
* Ignores lock key bits.
*/
export function isEscape(data: string): boolean {
return data === "\x1b" || data === `\x1b[${CODEPOINTS.escape}u` || matchesKittySequence(data, CODEPOINTS.escape, 0);
}
// Arrow key virtual codepoints (negative to avoid conflicts with real codepoints)
const ARROW_CODEPOINTS = {
up: -1,
down: -2,
right: -3,
left: -4,
} as const;
/**
* Check if input matches Arrow Up key.
* Handles both legacy (\x1b[A) and Kitty protocol with modifiers.
*/
export function isArrowUp(data: string): boolean {
return data === "\x1b[A" || matchesKittySequence(data, ARROW_CODEPOINTS.up, 0);
}
/**
* Check if input matches Arrow Down key.
* Handles both legacy (\x1b[B) and Kitty protocol with modifiers.
*/
export function isArrowDown(data: string): boolean {
return data === "\x1b[B" || matchesKittySequence(data, ARROW_CODEPOINTS.down, 0);
}
/**
* Check if input matches Arrow Right key.
* Handles both legacy (\x1b[C) and Kitty protocol with modifiers.
*/
export function isArrowRight(data: string): boolean {
return data === "\x1b[C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, 0);
}
/**
* Check if input matches Arrow Left key.
* Handles both legacy (\x1b[D) and Kitty protocol with modifiers.
*/
export function isArrowLeft(data: string): boolean {
return data === "\x1b[D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, 0);
}
/**
* Check if input matches plain Tab key (no modifiers).
* Handles both legacy (\t) and Kitty protocol.
*/
export function isTab(data: string): boolean {
return data === "\t" || matchesKittySequence(data, CODEPOINTS.tab, 0);
}
/**
* Check if input matches plain Enter/Return key (no modifiers).
* Handles both legacy (\r) and Kitty protocol.
*/
export function isEnter(data: string): boolean {
return data === "\r" || matchesKittySequence(data, CODEPOINTS.enter, 0);
}
/**
* Check if input matches plain Backspace key (no modifiers).
* Handles both legacy (\x7f, \x08) and Kitty protocol.
*/
export function isBackspace(data: string): boolean {
return data === "\x7f" || data === "\x08" || matchesKittySequence(data, CODEPOINTS.backspace, 0);
}
/**
* Check if input matches Shift+Backspace (Kitty protocol).
* Returns true so caller can treat it as regular backspace.
* Ignores lock key bits.
*/
export function isShiftBackspace(data: string): boolean {
return matchesKittySequence(data, CODEPOINTS.backspace, MODIFIERS.shift);
}
/**
* Check if input matches Shift+Enter.
* Ignores lock key bits.
*/
export function isShiftEnter(data: string): boolean {
return data === Keys.SHIFT_ENTER || matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.shift);
}
/**
* Check if input matches Alt+Enter.
* Ignores lock key bits.
*/
export function isAltEnter(data: string): boolean {
return data === Keys.ALT_ENTER || data === "\x1b\r" || matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.alt);
}
/**
* Check if input matches Shift+Space (Kitty protocol).
* Returns true so caller can insert a regular space.
* Ignores lock key bits.
*/
export function isShiftSpace(data: string): boolean {
return matchesKittySequence(data, CODEPOINTS.space, MODIFIERS.shift);
}
/**
* Check if input matches Option/Alt+Left (word navigation).
* Handles multiple formats including Kitty protocol.
*/
export function isAltLeft(data: string): boolean {
return data === "\x1b[1;3D" || data === "\x1bb" || matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.alt);
}
/**
* Check if input matches Option/Alt+Right (word navigation).
* Handles multiple formats including Kitty protocol.
*/
export function isAltRight(data: string): boolean {
return data === "\x1b[1;3C" || data === "\x1bf" || matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.alt);
}
/**
* Check if input matches Ctrl+Left (word navigation).
* Handles multiple formats including Kitty protocol.
*/
export function isCtrlLeft(data: string): boolean {
return data === "\x1b[1;5D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.ctrl);
}
/**
* Check if input matches Ctrl+Right (word navigation).
* Handles multiple formats including Kitty protocol.
*/
export function isCtrlRight(data: string): boolean {
return data === "\x1b[1;5C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.ctrl);
}
/**
* Check if input matches Home key.
* Handles legacy formats and Kitty protocol with lock key modifiers.
*/
export function isHome(data: string): boolean {
return (
data === "\x1b[H" ||
data === "\x1b[1~" ||
data === "\x1b[7~" ||
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.home, 0)
);
}
/**
* Check if input matches End key.
* Handles legacy formats and Kitty protocol with lock key modifiers.
*/
export function isEnd(data: string): boolean {
return (
data === "\x1b[F" ||
data === "\x1b[4~" ||
data === "\x1b[8~" ||
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.end, 0)
);
}
/**
* Check if input matches Delete key (forward delete).
* Handles legacy format and Kitty protocol with lock key modifiers.
*/
export function isDelete(data: string): boolean {
return data === "\x1b[3~" || matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, 0);
}
/**
* Check if input matches Shift+Delete (Kitty protocol).
* Returns true so caller can treat it as regular delete.
* Ignores lock key bits.
*/
export function isShiftDelete(data: string): boolean {
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, MODIFIERS.shift);
return undefined;
}