[9fans] bug in libcomplete?

[andrey mirtchovski <mirtchov@cpsc.ucalgary.ca>]

libcomplete depends on 'cd' to find our which directory the user is
in.  this breaks its behaviour with respect to programs which
implicitly chdir when started, one example is the 'window' command --
cd /tmp and run window, hit the complete key and you'll get the
contents of your $home.  The following example is a freshly created
window in the /tmp directory:



	home% pwd
	/tmp
	[bin/ lib/ tmp/]
	home% cd `{pwd}
	[58 files]
	home%

pwd shows i'm in /tmp, completion thinks i'm in $home, then the same
thing after "cd `{pwd}"

andrey