Function chain

static/editor.md/lib/codemirror/mode/tiddlywiki/tiddlywiki.js:69–72

(stream, state, f)

  reUntilCodeStop = /.*?\}\}\}/;

  function chain(stream, state, f) {
    state.tokenize = f;
    return f(stream, state);
  }

  // Used as scratch variables to communicate multiple values without
  // consing up tons of objects.