I am using Xubuntu 16.04. I have set the default application to Vim for plain text files in Thunar. By default Vim opens in XTerm and not in Xfce Terminal. I would like for it to default to Xfce4 Terminal. 

In Thunar the Open Terminal Here context menu item opens Xfce4 Terminal, and Xfce4 Terminal is set to default in Preferred Applications. Whisker Menu and the other menus open Vim in Xfce4 Terminal. I have tried creating a .desktop file, and this did not work. I have tried the option "Use a custom command:" under "Open With" > "Other Application" in Thunar. I have also tried uninstalling Xterm, and Thunar just shows an error.