Mohammad,
> So, for checking if a title is an existing tiddler what can I do > > [!is[tiddler]] [is[missing]] [has[title]] > > I think you can use any of these to test if a tiddler already exists. When I put [[my tiddler title]!is[tiddler]] into Advanced Search/Filter, I get the output "my tiddler title" and, when I then create a tiddler with this title, I get no output. This is all as expected according to the documentation for the "is" Operator. Using "is[missing]" produces the same result. Also, "!has[title]" or "!has[text]" seem to work just as well, although I think the first two are easier to interpret, so make the code a bit more readable. Note that "is[tiddler]" and "is[missing]" treat shadow tiddlers as though they don't exist. Which is OK because it is reasonable that you might want to create a tiddler to overwrite a shadow tiddler. On the other hand, "has[title]" and "has[text]" don't ignore shadow tiddlers, so you need to decide which option suits your application. Regards, Mal -- 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 https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/985d5c43-00eb-4a0f-aba3-5049ce4046d7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.