Xfce 远程桌面Tab键设置
Use CTRL-tab instead of tab
The XFCE Terminal has kidnapped the tab key for a feature of it's own, tab/windows switching. Instead the normal tab is sent if you press CTRL-tab .
Or Graphic Interface
When using the Xfce desktop, users may notice that the tab key does not work. This is due to a bug in Xfce sending a super key modifier with the command
To fix this,
Open the Xfce
Application Menu > Settings > Window Manager
Click on the Keyboard Tab
Clear the Switch window for same application setting
Or Manually
You may find that this is a more general issue with interception of the Tab key under remote XFCE4 sessions, rather than a problem with bash completion itself.
I had a similar issue running XFCE4 over VNC and the workaround for me was to edit the ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml file to unset the following mapping
< <property name="<Super>Tab" type="string" value="switch_window_key"/> --- > <property name="<Super>Tab" type="string" value="empty"/>
Note that there may be two entries, and the first already has the value "empty". If this is the case, edit the second entry.
来源： https://www.starnet.com/xwin32kb/tab-key-not-working-when-using-xfce-desktop/
来源： https://askubuntu.com/questions/352121/bash-auto-completion-with-xubuntu-and-xrdp-from-windows