The only part of xfce I use is the terminal, so it and dependencies it has are all I have installed on Arch. IMHO a solution to this should not require installation of additional packages. I am trying to use <Meta>-Tab as the 'Open Tab' accelerator. Similar bug: https://bugzilla.xfce.org/show_bug.cgi?id=3524 marked 'resolved fixed' but no indication as to how it was fixed or what to do in order to accomplish the objective. I can manually stick <Meta>-Tab in ~/.config/xfce4/terminal/accels.scm and it displays in the menu. However it does not function. The <Meta> is not at issue as any other <Meta> combo does work fine.
Tried: xfconf-query -c xfce4-keyboard-shortcuts -p "/xfwm4/default/<Super>Tab" -s "" xfconf-query -c xfce4-keyboard-shortcuts -p "/xfwm4/default/<Alt>Tab" -s "" xfconf-query -c xfce4-keyboard-shortcuts -p "/xfwm4/default/<Alt><Shift>Tab" -s "" To wipe any previous reference to the Tab key from the config... no luck.
GTK doesn't allow using Tab in shortcuts.
Pidgin has no issue w/ Tab in it's accelerator for switching conversation tabs.
As I understood from pidgin code snippet, it hard codes accelerators that contain Tab. This allows it to have a simple switch calling predefined actions on predefined accelerators. For xfec4-terminal, that supports accelerator customization, it would be required to go through all supported actions and look if any of them has Tab in its accelerator, and that would be a huge effort performed on each Tab key press.
Tab key is now allowed in accelerators: see https://git.xfce.org/apps/xfce4-terminal/commit?id=650b4f8324d3b977bd3cf2ccdef4a08f0a067e7d