I put
o = '#onkobo'; and that worked.
I will remember that.
Question: Could a stored template be used to share the same code between a column icon and emblem?
I saved some templates I have in both places (reading_status, kobo_status, and format_icons) but I am not quite sure how to get them to work. The dialog says to use the 'call' function but I think I did it wrong as I just got an error about it being unknown.