Is it possible to add multiple commands to the readline .inputrc file?
My immediate way to fix your overall goal (not really answering your question, but hopefully helping you anyway): write a bash alias or function for it. grev() perhaps, or something similar - at least, this is what I would do were I in your situation.
I am interested to see if what you originally asked is possible, however, so voting up your question in hopes that you can get a 'real answer'!