emacs: make tab key work in '-nw' mode
emacs: make tab key work in '-nw' mode

For some inexplicable reason, the TAB keybinding did not work when
emacs was launched with the "-nw" option to make it run in the current
terminal (and not as a GTK application).

listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg