Function getOption

static/editor.md/lib/codemirror/addon/fold/foldcode.js:137–144

(cm, options, name)

  CodeMirror.defineOption("foldOptions", null);

  function getOption(cm, options, name) {
    if (options && options[name] !== undefined)
      return options[name];
    var editorOptions = cm.options.foldOptions;
    if (editorOptions && editorOptions[name] !== undefined)
      return editorOptions[name];
    return defaultOptions[name];
  }

  CodeMirror.defineExtension("foldOption", function(options, name) {
    return getOption(this, options, name);