artichoke-klipper-backup/printer_data/config/macros/conditional_home.cfg

# Homes if not homed, skips homing if already homed.
[gcode_macro COND_G28]
gcode:

    G28                                                   # Do the actual homing 
  {% else %}
    RESPOND PREFIX="COND_G28: " MSG="Already homed, skipping."
  {% endif %}