umount and auto-completion

[Florian Coste]

Hi,

I've seen something weird with the command umount with the auto-completion.
The auto-completion doesn't seem to work.

I have an usb key called "Xubuntu 16.10 amd64". I verify that with the
command lsblk.

Then, I type 'umount /media' then I press 'tab' to have the autocompletion.
With 16.04, the autocompletion completed correctly with backslash :
"/media/nairwolf/\ Xubuntu\ amd64"

But, now, with Yakkety, the autocompletion stops before the first space.

There is a screenshot to explain what I have :
Loading Image...

Don't forget that I'm typing only "umount /media", and then, I press tab to
have the autocompletion. And this picture is the result of the
auto-completion.

Is it a bug ? Is it caused by umount, or by the auto-completion ?

I'm unable to reproduce that with other basic command like "ls", "cd" or
"rm".