Function peekCommand

static/editor.md/lib/codemirror/mode/stex/stex.js:26–32

(state)

    }

    function peekCommand(state) {
      if (state.cmdState.length > 0) {
        return state.cmdState[state.cmdState.length - 1];
      } else {
        return null;
      }
    }

    function popCommand(state) {
      var plug = state.cmdState.pop();