Function filter

static/editor.md/lib/codemirror/mode/jade/jade.js:327–342

(stream, state)

  }

  function filter(stream, state) {
    if (stream.match(/^:([\w\-]+)/)) {
      var innerMode;
      if (config && config.innerModes) {
        innerMode = config.innerModes(stream.current().substring(1));
      }
      if (!innerMode) {
        innerMode = stream.current().substring(1);
      }
      if (typeof innerMode === 'string') {
        innerMode = CodeMirror.getMode(config, innerMode);
      }
      setInnerMode(stream, state, innerMode);
      return 'atom';
    }
  }

  function code(stream, state) {
    if (stream.match(/^(!?=|-)/)) {