[ownedbycats]

I was trying to change my 'genres' column like so:

program:
# Current virtual library
	vl = current_virtual_library_name();

## Main three 'categories' of books. fanfic is taglike, manual enumerated
	tags = $tags;
	fanfic = $#fanficcat;
	manual = $#manualtype;

## Stripping sub-tags of fanfic and manual to use their specific columns instead
	stripped_tags = list_re_group(tags, ',', '.',
			'^(Fanfiction|Documentation & Manuals)($|\..*$)',
			'{$}', '');

## Splitting tag hierarchy
	split_tags = re(stripped_tags, '\.', ',');

## Removing a few unwanted tags
cleaned_tags = list_difference(
			split_tags,
			'@cleanup, Cultures & Regions, School, Social Issues',
			',');

## Trying to concenate the three book categories for shared VLs. Otherwise just use the cleaned tags.
	if
		'(Read|Unread|On Device|Cleanup)' in vl 
	then 
		list_union(cleaned_tags, fanfic, manual, ',') 
	else
		cleaned_tags
	fi

1. Line 27's list_union isn't working as long as I have 'manual' in there, which I'm guessing is due to it being an enumerated column instead of taglike. How do I use it in the list_union?

2. How do I add 'All Books' to the three VLs I have listed?

3. Is it expected for the list_union's combined entries to display in the opposite order? (e.g., "Mass Effect Trilogy, Fanfiction" even though the first is from fanfic, which is second in list).

4. Sometimes if I switch between multiple VLs/views too quickly, the column 'sticks' and displays the wrong entries until I press F2 and re-save the template. Any tips to unstick it?

If any help, this mostly happens when I switch between Fanfiction (where the view manager doesn't even have the column displayed) and Read/Unread.

Worst case, I'll just used combined entries for all VLs - the minor nuisance of having fanfic categories shown twice in book details I can deal with.