How to insert a real tab with Vim SuperTab plugin if completion fails

I really like vim SuperTab plugin.

But there is a little problem I have.

When there is no keyword to complete the plugin doesn't insert a real tab but instead it tries to complete the word with CTRL+N or CTRL+P showing an error.

I know that I can use CTRL+TAB to insert a real tab but I'd like an auto fallback function.

I also know I can write a custom function to accomplish this task but I don't have the vim scripting competence to do this.

Is there any configuration of vim or SuperTab that I'm missing?

Solution 1:

While in insert mode type <C-V> Tab.

<C-V> is used as a prefix to insert special characters.

see :help ins-special-keys for more information.