Bug maybe found in cat

[Nicolas Bonifas]

Hello, I think I've found a bug in cat: when I type 'cat true' (when I'm in 
the directory of the 'true' binary, /bin/ on my computer), my terminal 
becomes unreadable (normal characters are printed as control characters). 
After cat's execution, the problem persists until I close the terminal.
That problem doesn't happen when I redirect the output to a file.
It happens in pure console mode and in my terminal emulator (xterm).
I use Debian Sarge i386 with kernel 2.4.21. My shell is bash. cat and true 
are both in version GNU 5.0.
Don't hesitate to contact me for further informations.
Thanks for your job!
Nicolas