there is no need for your edit

It says "In these circumstances, use the format wikipedia:fr='page title' (e.g. wikipedia:en=*) for the secondary languages. "

It was already noted in changeset/176592977 that your script is broken

It can be repeated in the key if it's not the usual language.

It should have been "construction_date", the more common tag. Sohow I think you'd know that.

It's acceptable to link several articles. Plus, there is no reason to link Mercure from an article about Meiniger just because it's in the "local majority language" you somehow determined. Please refrain from making such messes and revert this.

I'm not sure if this is helpful. What's the basis for this edit?

what is the basis for this edit?

this edit is messy, you are linking random Wikipedia articles. Bear in mind that Switzerland is multilingual.