auto-complete weirdness

[Atom Smasher <atom@xxxxxxxxxxx>]

zsh 4.3.2 (amd64-portbld-freebsd6.2)

1) i plug in a USB hard drive and see this:

# ls -lh /dev/da0*
crw-r-----  1 root  operator    0, 126 Sep 10 19:11 /dev/da0
crw-r-----  1 root  operator    0, 127 Sep 10 19:11 /dev/da0a
crw-r-----  1 root  operator    0, 128 Sep 10 19:11 /dev/da0c


2) i attach an encrypted provider:

# geli attach -d /dev/da0
Enter passphrase:


3) this creates "/dev/da0.eli", which i want to mount:

# ls -lh /dev/da0*
crw-r-----  1 root  operator    0, 126 Sep 10 19:11 /dev/da0
crw-r-----  1 root  operator    0, 129 Sep 10 19:11 /dev/da0.eli


4) i type "/dev/da0<tab>" and it auto-completes to "/dev/da0s1":

# mount /dev/da0<tab>s1


why is the auto-complete giving me a non-existent file? where should i 
poke around to fix it? thanks...


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