I also encountered this bug. It affects any program that passes attachments to Thunderbird (I hit it while using DarkTable 1.1 under Ubuntu 12.10 Quantal Quetzal). See attached patch for a simple fix.
Note that there is a newer version of xdg-utils included in Debian, but it contains other bugs.
I also encountered this bug. It affects any program that passes attachments to Thunderbird (I hit it while using DarkTable 1.1 under Ubuntu 12.10 Quantal Quetzal). See attached patch for a simple fix.
Note that there is a newer version of xdg-utils included in Debian, but it contains other bugs.