Customize airline tagbar extension to include current tags parent

问题

The airline plugin has an extension which uses Tagbar to show the current function name.

^{(I know this because of this question which I found via asking this question)}

This works really well and looks great. Here's airline showing me I'm editing the do_foo() function:

But Tagbar knows much more than this! Specifically, it knows the current class (i.e. the parent of the current tag):

^{(It does this using ctags)}

Is there a way to configure airline to tell me the current class as well as the current function?

来源：https://stackoverflow.com/questions/33787242/customize-airline-tagbar-extension-to-include-current-tags-parent