Template talk:T empty string as parameter name
Add topic{{T empty string as parameter name|=7}} gives 7
abc{{T empty string as parameter name|=7}}def gives abc7def
abc{{T empty string as parameter name|=}}def gives abcdef
{{T empty string as parameter name|=7}} gives 7
abc{{T empty string as parameter name|=7}}def gives abc7def
abc{{T empty string as parameter name|=}}def gives abcdef