[ownedbycats]

One last thing I suspect may be of use for you.

Create a new column with these settings:


Lookup Name: yearpublished
Column Heading: Year Published
Column Type: Column built from other columns

Template:

program:
	p = format_date(raw_field('pubdate'), 'yyyy');
	if p then
		strcat(re(p, '^(...).*', '\1'), '0s.', p)
	else 'Unknown'
	fi

Sort/search by: Text
Show in Tag Browser: checked

It will add this handy column to your tag browser, grouping by decade -- you'll need to set the column to a hierarchical one in preferences/look & feel/tag browser.