Unfortunately I can’t how to see in the parameter how to add the result as [[retreivedtitle-bookmarklet]] $subfilter={{{ [{$:/temp/bookmarklet!!bookmarklet-title}addsuffix[-bookmarklet]] }}} to the $field=filter.
@pmario thanks for that it works, the thing I find hard is to commit this to memory. The idea that the same filter in the set statement honors the titles with spaces but in a filtered transclusion it does not.
You mean {{{[tag[HelloThere]]}}} by filtered transclusion. right?
Internally it does create the same list, but you don’t have access to the text-representation, because the output of the filtered transclusion is wikified.
The set-widget filter parameter was introduced around TW v5.1.5 … probably because it was needed to get this exact behaviour. …
Since widget parameters are extended as needed this can cause inconsistencies.