[ownedbycats]

For those who read fanfics on a Kobo, here's something you can put in a composite column to show how many chapters you've read of a fic as of the last time you connected the device. Note that this relies on using Kobo Utilities and FanFicFare; read the comments for more details.

program:
# 'Current reading location' stored by Kobo Utilities. 
input = $#kobobookmark;
# These last three are saved by FanFicFare. 
fandom = $#fanficcat;
status = $#fanficstatus;
ccount = $$#chaptercount;

	if 
		fandom
	then

		if	
# Note that this is FanFicFare's file structure. If you download with a different tool, it may not work.	
				substr(input, 0, 10) == 'OEBPS/file'
			&& 	
# Anthologies have a different file structure, so we should ignore those.
				!status inlist 'Anthology'
		then		
# Since I pause at the beginning of chapters, I subtract by one. 
			strcat(format_number(re(input, '.*\/file(\d+).*', '\1') - 1, '{0:,d}'), '/',ccount)
		else
# Showing a regular chapter count for everything else.
			ccount
		fi
	fi

Thanks to those who helped me figure this out a while back.