jsc-cli REPL should allow multi-line input

• Component: JavaScriptCore
• Status: NEW ---

[Mark Hahnenberg]

Legacy jsc allows this, and it's a feature of many other modern REPLs too. Not 100% sure how to do it. Maybe doing paren and brace matching will get us most of the way there. So things like:

(function() {
  return 42;
})();

or:

var f = function(a, b) {
  return a + b;
};

would be possible.