Template talk:Stub text

will not work -- Pyrrhus (talk) 14:03, August 22, 2019 (EDT)
will not work, since MediaWiki:lang does not contain a $1, and does not accept parameters. I think you are confusing variables with parser functions. With variables, you can set a fallback value, as in. This works. But it won't work with a parser function, so won't work. Here is the code you are looking for:

Pyrrhus (talk) 14:03, August 22, 2019 (EDT)