Hi Mohammad, the difference between the is and all operators, as you can see in the documentation:
https://tiddlywiki.com/#all%20Operator https://tiddlywiki.com/#is%20Operator ... is, that the is operator takes a selection of titles as input in your example it's without input, <currentTiddler>is[current] would work, [[01]is[current] would return Lec01 No output No output ... the all operator creates an output, ignores every input. the is operator filters an input Look at the below codes > > > > - Case i > > <$list filter="01 02 03"> > <$set name="xx" filter="[all[current]addprefix[Lec]]" emptyValue="No > output"> > <<xx>> > </$set> > </$list> > > Produces: Lec01 Lec02 Lec03 > > > > - Case ii > > <$list filter="01 02 03"> > <$set name="xx" filter="[is[current]addprefix[Lec]]" emptyValue="No > output"> > <<xx>> > </$set> > </$list> > > Produces: No output No output No output > > > What is the problem? Isn't it the *all *and *is *operator are the same? > > --Mohammad > -- 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/683d7c88-4843-4fb8-871f-42be156a89f8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

