Comment # 4 on bug 903362 from Rich Coe

I deleted calibre.rpmsave, it did not make a difference.

(1) I have not edited anything in /etc/bash_completion.d/
(2) Yes, it happens everywhere
(3) I don't experience it with 'ls', I do with 'find'.
(4) The current LANG is en_US.UTF-8, I set LANG to en_US and C.  
    It didn't change the behaviour. 
    My prompt is '\h:(pts11) \! : ',  I set it to ' : '.
    It didn't change the behaviour.
(5) It does not happen as root.

I will try the settings in my env, .bashrc on an empty account til I can 
find the setting that is causing it.