Shorter approach for tags with spaces?

#1

Hello community,

I use a tag with spaces in it.
Here is my current code:

\procedure switchTags()
<$list filter="[tag[Stay]]" >
<$let encaps={{{ [<currentTiddler>format:titlelist[]] }}} >
<$action-listops $tiddler=<<thisTiddler>> $field="tags" $subfilter="+[remove<encaps>]"/>
</$let>
</$list>
<$let encaps={{{ [<actionValue>format:titlelist[]] }}} >
<$action-listops $tiddler=<<thisTiddler>> $field="tags" $subfilter="+[append<encaps>]"/>
</$let>
\end

My question:
How can I modify the $subfilter in a way to omit the extra variable definition?

#2 

<$action-listops $tiddler=<<thisTiddler>> $field="tags" $subfilter="[[tag with spaces]]"/>

or

\procedure tag() tag with spaces

<$action-listops $tiddler=<<thisTiddler>> $field="tags" $subfilter="[<tag>]"/>
#3

Sorry, I made a mistake - the former “[[tag with spaces]]” originate from an actionValue (created by a Radio-Widget) and I just edited my first post to reflect it better.