Directories with multiple spaces doesn't expand on <TAB>. mkdir "0 1 2" mkdir "0 1 3" cd 0\ <TAB><TAB> tcsh works correctly
I can confirm this happens to me on 2 different machines. This got broken upgrading to fedora 21, on fedora 20 it was working properly. I've also tried removing all packages that put files in /etc/bash_completion.d/ and the error still happens. complete -R fixes this behaviour, but then autocomplete doesn't work on non built-in commands like yum, etc.
I meant complete -r
*** Bug 1183007 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 1171396 ***