I have answered my own question; The filter will be
[has:field[fieldname]]+[!has[fieldname]] It works on the basis that [has:field[fieldname]] returns all tiddlers with fieldname blank or otherwise and that [!has[fieldname]] only returns tiddlers without fieldname having a value or even having the fieldname. To satisfy both conditions the fieldname must exist but be empty. Rergards Tony On Thursday, July 26, 2018 at 11:30:30 AM UTC+10, TonyM wrote: > > Folks, > > As documented here https://tiddlywiki.com/#field%20Operator the "has" > operator does not seem to have a way to filter that returns tiddlers with a > field, that is empty. > > We can force it to return fields that are empty along with those that are > not empty, > but to get a list of tiddlers that have a field but are also empty seems > impossible without a nested list and testing the contents of a field using > the get operator. > > *Does anyone have a tricky way of using a single filter to list such > tiddlers?* > > I think this may be an issue to raise in the GitHub issues. > > Regards > Tony > -- 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/596256a4-fa4d-4a70-b791-3adbfa74b2b9%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
