> This example wouldn't work for a title containing spaces. >
Ok, so let's consider the hypothetical syntax fixed... > \define tagging(title) <$set name="tid" value="""$title$""" default="<<currentTiddler>>"/> <$list filter="[[<<tid>>]tagging[]]"/> \end The trouble is that in many situations an empty string is a valid value > that shouldn't be defaulted; what we really want here is a way to detect > missing parameters. > How and when are variables evaluated? Could the evaluation return some *<<undefined>>* or *<<null>>* value subsequently passed to the set widget in order to trigger using a default fallback? Best wishes, Tobias. -- 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.
