Bash Smart Completion expands to one file instead of all when using whildcards

[Daniel]

Using Bash Smart Completion, I found that sometimes when I use wildcards and then press tab, not all existing files are consideres for expansion but only the first one. This is a very dangerous behaviour because people tend to think there is only one file matching the pattern.

Steps to reproduce (bash shell with smart completion enabled):

1. Create files a.x and b.x
    $ touch a.x
    $ touch b.x
2. Enter "ls *x" (without quotes)
3. Press tab
4.
    Expected: Shell doesn't expand because there are two files matching the pattern
    Instead, the shell expands to "ls a.x"

Shell 'screenshot', to show the difference:

$ # smart completion is enabled
$ touch a.x # create test files
$ touch b.x
$ ls *.x<tab>
$ ls a.x # shell expanded *.x to a.x

You can simply reproduce the expected behavoiur when you disable smart completion:

$ complete -r #disable smart completion
$ touch a.x # create test files
$ touch b.x
$ ls *.x<tab><tab>
a.x b.x
$ ls *.x

My System:

Ubuntu 14.04 LTS with current updates
Linux 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

bash --version
GNU bash, version 4.3.8(1)-release (x86_64-pc-linux-gnu)

Package: bash
Architecture: amd64
Version: 4.3-6ubuntu1

Package: bash-completion
Architecture: all
Version: 1:2.1-4

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.