[Bug-tar] Cursor freeze when typing a tar command

[Adriano Pastore]

Hi,
I'd like to draw your attention to something that may well be a bug 
(though I'm not sure it is a tar bug):
When I try to delete a file contained in a tar archive, I type a command 
like the following:
    $ tar --delete -f backup.tar history.dat
When I type part of the second argument, e.g.,
    $ tar --delete -f backup.tar his
and inadvertently press 'Tab', my cursor freezes. It keeps blinking but 
there seems to be no reaction from most keyboard inputs: no backspace, 
no arrow keys, no characters to continue typing. Only Ctrl+C will work 
and get me out. I am aware that the auto-completion feature won't work, 
of course, so there's no point in typing 'Tab'. But it shouldn't freeze 
either.
 - Reproducible: always
 - uname -a: Linux <hostname> 3.2.0-2-amd64 #1 SMP Fri Apr 6 05:01:55 
UTC 2012 x86_64 GNU/Linux
 - Distro: Debian testing
Greets,
Adriano