in lib/ace/lib/event.js [229:283]
function normalizeCommandKeys(callback, e, keyCode) {
var hashId = getModifierHash(e);
if (!useragent.isMac && pressedKeys) {
if (e.getModifierState && (e.getModifierState("OS") || e.getModifierState("Win")))
hashId |= 8;
if (pressedKeys.altGr) {
if ((3 & hashId) != 3)
pressedKeys.altGr = 0;
else
return;
}
if (keyCode === 18 || keyCode === 17) {
var location = "location" in e ? e.location : e.keyLocation;
if (keyCode === 17 && location === 1) {
if (pressedKeys[keyCode] == 1)
ts = e.timeStamp;
} else if (keyCode === 18 && hashId === 3 && location === 2) {
var dt = e.timeStamp - ts;
if (dt < 50)
pressedKeys.altGr = true;
}
}
}
if (keyCode in keys.MODIFIER_KEYS) {
keyCode = -1;
}
if (!hashId && keyCode === 13) {
var location = "location" in e ? e.location : e.keyLocation;
if (location === 3) {
callback(e, hashId, -keyCode);
if (e.defaultPrevented)
return;
}
}
if (useragent.isChromeOS && hashId & 8) {
callback(e, hashId, keyCode);
if (e.defaultPrevented)
return;
else
hashId &= ~8;
}
// If there is no hashId and the keyCode is not a function key, then
// we don't call the callback as we don't handle a command key here
// (it's a normal key/character input).
if (!hashId && !(keyCode in keys.FUNCTION_KEYS) && !(keyCode in keys.PRINTABLE_KEYS)) {
return false;
}
return callback(e, hashId, keyCode);
}