Question:
I had this proof-of-concept template for making different icons based on is_marked values.
Code:
program:
m = is_marked();
first_non_empty
(
contains(m, "invalid_author_sort", 'test.png', ''),
contains(m, "invalid_title_sort", 'test2.png', ''),
)
But how do I set a value for a non-defined mark?