created: 20140410103123179
modified: 20150124192055000
tags: [[Filter Operators]] [[Tag Operators]] [[Negatable Operators]]
title: untagged Operator
type: text/vnd.tiddlywiki
caption: untagged
purpose: discard any input titles that have tags

<$macrocall $name=".operator-def"
input="a [[selection of titles|Title Selection]]"
parameter="none"
output="those input tiddlers that have no tags"
negationOutput="those input tiddlers that have at least one tag"
/>

A tiddler is deemed to have no tags if it:

* doesn't exist
* doesn't have a <<.field tags>> field
* has an empty <<.field tags>> field

<<.operator-examples "untagged">>