Comment 25 for bug 89235

"""
This is no bug in the program.
This is a "user bug".
If it is considered to be a bug it is a bug in realdine lib not in bash.
And the bug(or maybe even wish, since it's not really a bug, it's just something that doesn't work as expected) then would be:
/etc/inputrc should be the default for lib readline and those defaults should be able to be overridden in ~/.inputrc
"""

Then why not include a useful ~/.inputrc with Ubuntu ? There's configuration scripts supplied with every piece of software...it's 21st century FGS.