Thanks Eric! It is really strange while I read tiddlywiki.com more often and check it before raise any questions, but I don't see these kind of hints :-) :-) I need new eyeglasses. :-)
By the way Tiddlywiki is one of those tools its side rules and grammar exceptions are MORE than its grammar rules. Cheers Mohammad On Monday, February 10, 2020 at 1:19:51 PM UTC+3:30, Eric Shulman wrote: > > On Monday, February 10, 2020 at 12:59:30 AM UTC-8, Mohammad wrote: >> >> <$list filter="[tag[Examples]get[type]] -[[text/vnd.tiddlywiki]]"> >> >> </$list> >> >> It displays >> text/vnd.tiddlywiki >> text/vnd.tiddlywiki >> Why there is two outputs for second $list while as per dominant append >> filter concept, if all tiddlers have type text/vnd.tiddlywiki, then second >> $list should have no output! >> > > The documentation at https://tiddlywiki.com/#get%20Operator specifically > says: > > *Each input title is processed in turn. If the corresponding tiddler >> contains field F, and the value of this field is not empty, then its value >> is appended to the output.* > > *Unlike most other Filter Operators, the selection output by get can >> contain duplicates. To avoid duplicates, use each[F]get[F].* > > > Note that this documentation says "its value is appended"... but does > *not* say "*dominantly* appended", and then it goes on to explain that > this means the output "can contain duplicates". > > For the test case, "[tag[Examples]]", the filter produces 7 matching > tiddlers. However, only 3 of these tiddlers have a specified type of > "text/vnd.tiddlywiki". The rest have no specified type (i.e., the type > field is blank). > Thus, the filter "[tag[Examples]get[type]]" results in 3 copies of > "text/vnd.tiddlywiki"... and then adding "-[[text/vnd.tiddlywiki]]" to the > filter removes 1 of them, leaving 2 remaining. > > Even though this is unlike the behavior of other filters, it IS working as > documented. > > -e > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/306ed6e6-15b6-476b-8aa1-09f50003ceb0%40googlegroups.com.
