autocompletion: `grep: Trailing backslash` in `sudo mount`

[yurimxpxman]

I have two files in the same directory:

Ramones - End of the Century.mdf
Ramones - End of the Century.mds

The .mdf file is a disk image of the film, so I wished to mount. I did so with:

sudo mount Ram<tab><tab>

where <tab> is my pressing the tab key, of course. Observe the following screenshot:

yurimxpxman@yurimxpxman-desktop:~/Music/The Ramones/Ramones - End of the Century$ sudo mount Ramones\ -\ End\ of\ the\ Century.mdgrep: Trailing backslash
grep: Trailing backslash

I have repeated this on several machines and always had the same problem. It does the same on the x86_64 bit version, as well as the i686. My friend tried to repeat the problem in the same version of bash on arch GNU/Linux, and he was not able to repeat the problem on it, so it is definitely a problem with Ubuntu code.

Thanks

[yurimxpxman (yurimxpxman)]

BTW, it just occurred to me that I forgot to say which version of Ubuntu this is. It is the latest version, 7.10. I have not tried it on any other versions.

[Brandon Kruger (bmk789)]

I can confirm this bug on AMD64 as well in verision 3.2.25 of bash.

[neurophyre (o8ihf4ohkg)]

I can confirm this bug on 7.10, 32-bit x86, bash 3.2.25(1)-release.

[Mular (kramer-k)]

I too been suffering with this as well.. Bash Version 3.2.25(1)-release as well

Happens a lot when I try to use auto complete on my external drive.
mular@AlphaLinux:~$ ls /media/Local\ Disk/Games/Warcraft\ III/Warcraft\ III\ and\ The\ Frozen\ Throne/
Warcraft III - The Frozen Throne [Disk 1].iso.iso
Warcraft III - The Frozen Throne [Disk2].iso
Warcraft III - The Frozen Throne [Disk3].iso
mular@AlphaLinux:~$ sudo mount -o loop /media/Local\ Disk/Gamgrep: Trailing backslash
grep: Trailing backslash

Auto complete works up until /Gamgrep (supposed to be Game) Then if I go to the directory my iso are stored.

mular@AlphaLinux:~$ cd /media/Local\ Disk/Games/Warcraft\ III/Warcraft\ III\ and\ The\ Frozen\ Throne/
mular@AlphaLinux:/media/Local Disk/Games/Warcraft III/Warcraft III and The Frozen Throne$

Auto complete worked fine there..

If I just do: sudo W and tab it gives me Warcraft\ III\ -\ The\ Frozen\ Throne\ \[Disk - if I type 3 it completes it just fine..
mular@AlphaLinux:/media/Local Disk/Games/Warcraft III/Warcraft III and The Frozen Throne$ sudo Warcraft\ III\ -\ The\ Frozen\ Throne\ \[Disk3\].iso

Now.. as soon as I add the mount command and hit tab I get
mular@AlphaLinux:/media/Local Disk/Games/Warcraft III/Warcraft III and The Frozen Throne$ sudo mount Warcraft\ III\ -\ The\ Frozen\ Throne\ \[Disk3grep: Trailing backslash
grep: Trailing backslash

Hope this is helpful!

[André Klitzing (misery)]

It only happens if you use "sudo mount ...". If you use "mount ..." without "sudo" it will work properly.

I found a nice comment in /etc/bash_completion for that meta-commands like sudo (function _command).
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... currently not quite foolproof (e.g. mount and umount don't work properly), but still quite useful.
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I love those comments. ;-)