Found the source of the issue. Previously, xfce was not did not use gvfs-info for mimetype detection. This changed in this commit:
http://cgit.freedesktop.org/xdg/xdg- utils/commit/?id=8392f94bbc640e4e69aae706d33a9e4a2f364f26 Relevant code: http://cgit.freedesktop.org/xdg/xdg-utils/tree/scripts /xdg-mime.in?id=5336e0a26dbd1e7cb00a8c05678fef039ba2c3db#n76 Before xfce used info_generic, which performs the mimetype lookup with the mimetype command instead of gvfs-info. On a newly created plaintext file: $ mimetype --brief --dereference test text/plain $ gvfs-info test 2> /dev/null | grep standard::content-type | cut -d' ' -f4 application/octet-stream -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xdg-utils in Ubuntu. https://bugs.launchpad.net/bugs/1497170 Title: New file creation - not opening with file editor Status in One Hundred Papercuts: Confirmed Status in xdg-utils package in Ubuntu: Confirmed Bug description: Create a new file from File - Create Empty File. Open new document: expected behaviour - document opens in text editor actual behaviour - Open With dialogue opens requiring an application to open file. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: thunar 1.6.10-1 ProcVersionSignature: Ubuntu 4.2.0-10.11-generic 4.2.0 Uname: Linux 4.2.0-10-generic x86_64 ApportVersion: 2.18.1-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE Date: Fri Sep 18 09:05:54 2015 InstallationDate: Installed on 2015-09-17 (0 days ago) InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150917) SourcePackage: thunar UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.18.1-0ubuntu1 Architecture: amd64 CurrentDesktop: XFCE DistroRelease: Ubuntu 15.10 InstallationDate: Installed on 2015-09-17 (1 days ago) InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150917) Package: xdg-utils 1.1.0~rc3+git20150907-1ubuntu2 PackageArchitecture: all ProcVersionSignature: Ubuntu 4.2.0-10.11-generic 4.2.0 Tags: wily Uname: Linux 4.2.0-10-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1497170/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
