I created a terminal based HAL viewer, 100% keyboard based operation

write this halshow based HAL viewer, because halshow is unusable from the keyboard only.
This one is completely operable by the keyboard and is compatible with halshow save files.
For example toggling a boolean Pin is only the press of the space bar and
moving between the tree and the WATCH/SHOW tabs uses left/right arrows.

Here is the source code:
github.com/hansfbaier/linuxcnc-haltui

Have fun!
Hans 

Note that there is a re-write of Halshow under development, it might be worth seeing if there is scope for adding your ideas there?

github.com/LinuxCNC/linuxcnc/pull/4231