How to create a single button to sequentially remove and add a tag to a certain tidlder

2

If we can assume that, intially, either tiddler1 or tiddler2 (but not both) is already tagged with tagA, then the following button will switch the tags between the two tiddlers:

<$button> toggle tags
   <$action-listops $tiddler="tiddler1" $tags="+[toggle[tagA]]"/>
   <$action-listops $tiddler="tiddler2" $tags="+[toggle[tagA]]"/>
</$button>
  • If tiddler1 or tiddler2 does not yet exist, then clicking the button will create the tiddler and tag it with tagA.
  • If both tiddlers exist, but neither tiddler has tagA, then clicking the button will add tagA to both tiddlers.
  • Similarly, if both tiddlers already have tagA, then clicking the button will remove tagA from both tiddlers.