cols: Removed special handling of '+' because list_subset() now handles this col_num value itself, by appending the rest of the columns. Support intermixing int and '+' columns, by using new format.str2int_passthru().
cols: Removed special handling of '+' because list_subset() now handles this col_num value itself, by appending the rest of the columns. Support intermixing int and '+' columns, by using new format.str2int_passthru().