Function defineOptions

external/.scrollLibs.js:10468–10741

(CodeMirror)

  var optionHandlers = {}

  function defineOptions(CodeMirror) {
    var optionHandlers = CodeMirror.optionHandlers

    function option(name, deflt, handle, notOnInit) {
      CodeMirror.defaults[name] = deflt
      if (handle) {
        optionHandlers[name] = notOnInit
          ? function (cm, val, old) {
              if (old != Init) {
                handle(cm, val, old)
              }
            }
          : handle
      }
    }

    CodeMirror.defineOption = option

    // Passed to option handlers when there is no old value.
    CodeMirror.Init = Init

    // These two are, on init, called from the constructor because they
    // have to be initialized before the editor can start at all.
    option(
      "value",
      "",
      function (cm, val) {
        return cm.setValue(val)
      },
      true
    )
    option(
      "mode",
      null,
      function (cm, val) {
        cm.doc.modeOption = val
        loadMode(cm)
      },
      true
    )

    option("indentUnit", 2, loadMode, true)
    option("indentWithTabs", false)
    option("smartIndent", true)
    option(
      "tabSize",
      4,
      function (cm) {
        resetModeState(cm)
        clearCaches(cm)
        regChange(cm)
      },
      true
    )

    option("lineSeparator", null, function (cm, val) {
      cm.doc.lineSep = val
      if (!val) {