For your list-search filter you should have "[tag{$:/generated-list-demo-state}!is[system]!is[shadow]sort[title]]", you use single { } around transcluded filter operands, < and > are used for variables set using the set widget or as list variables, and in both cases you leave out the [ and ]. With that fixed the list-search should let you search by title through the list of all tiddlers tagged with your selected topic.
If you want to apply an arbitrary filter to the output than you may have to modify the list-search or make your own version. -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To post to this group, send email to tiddlywiki@googlegroups.com. Visit this group at http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/d/optout.