Ah, nevermind....I figured it out. I shouldn't have given up so easily. I now see it is tag:strict[some_tag]. So far it seems to be working the way I want, but I need to test this out more.
-- 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 [email protected]. To post to this group, send email to [email protected]. 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/b3829aa6-1414-41d7-8d7d-ac77abe78cdd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
