The default handler is not stored in the file $XDG_DATA_HOME/applications/mimeapps.list.

[Christopher Yeleighton]

Contrary to what the manual page for gvfs-open says, the default handler is not stored per-user, in the file $XDG_DATA_HOME/applications/mimeapps.list; that file does not exist.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gvfs-common 1.20.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12
Uname: Linux 3.13.0-44-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Jan 19 23:32:51 2015
InstallationDate: Installed on 2014-08-20 (152 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: gvfs
UpgradeStatus: No upgrade log present (probably fresh install)

[Christopher Yeleighton (giecrilj)]

The file actually is at $HOME/.local/share/applications/mimeapps.list.