Clojure-Markdown CodeMirror mode

clojure-markdown.js

CodeMirror.defineMode("clojure-markdown", function(options){

  var clojureMode  = CodeMirror.getMode({}, "clojure");
  var markdownMode = CodeMirror.getMode({}, "markdown");

  return {

    startState: function() {
      return {
        mode: markdownMode,
        localState: markdownMode.startState(),
        depth: 0,
        prevDepth: 0,
        lastChar: ""
      };
    },

    copyState: function(state) {
      return {
        mode: state.mode,
        localState: CodeMirror.copyState(state.mode, state.localState),
        depth: state.depth,
        prevDepth: state.prevDepth,
        lastChar: state.lastChar
      }
    },

    innerMode: function(state) {
      return {
        state: state.localState,
        mode: state.mode
      }
    },
    
    indent: function (state) {
       return state.mode.indent && state.mode.indent(state.localState)
    },

    token: function(stream, state) {

      state.prevDepth = state.depth
      var cur = stream.peek()

      if (cur == "(" && state.lastChar != "\\") {state.depth += 1}
      if (cur == ")" && state.lastChar != "\\") {state.depth -= 1}

      state.lastChar = cur
      styleDepth = Math.max(state.depth, state.prevDepth)

      var newMode = styleDepth == 0 ? markdownMode : clojureMode

      if (newMode !== state.mode) {
        state.mode = newMode
        state.localState = newMode.startState()
      }

      var style = state.mode.token(stream, state.localState)
      return style;
    }
  }
})

I've currently got this working reasonably well - with paredit &matching brackets - but indentation doesn't work as it does in plain clojure mode.