Comment 10 for bug 1327002

[Impact]

The bug prevents users from launching a second instance of gthumb.

This feature is sometimes useful, for example, when opening a few images in a row from a file manager - it might open a new instance of gthumb.

In addition, second instance fails to run without any messages (unless you run it from terminal), which is confusing to the users.

The fix had been already applied upstream a few years ago, and it would be nice to backport it to Trusty.
The debdiff which is attached to this report contains the backported patch.

[Test Case]

Steps to reproduce:

- launch one instance of gthumb from terminal: gthumb &
- try launching a second instance: gthumb

Expected result:

- second instance would open normally

What really happens:

- second instance shows error message and quits immediately:

GDBus.Error:org.freedesktop.DBus.Error.NotSupported: Application does not handle command line arguments

[Regression Potential]

The fix had been applied upstream a few years ago, so it had been tested since then.

It was also tested by Utopic/Vivid/Wily users as it was included in gthumb 3.2.8 in these releases.

I consider the regression potential to be low here.