Your third one is incorrect. [[a b]] is one title, "a b", not two titles.
you can see what I mean if you use this: <$list filter='[[a b]]'> item: <<currentTiddler>><br> </$list> if you put in each of your filters than you can see the differences. -- 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 https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/595a8d15-9d2c-4dd3-b5f8-8e6b84c2ed5d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.