Hi Johannes,
I like to answer at least one of your questions:
- Does a qgsfunction really *always* get some `feature` (potentially
made-up and invalid if none is available in the context, e.g. layout
text item) and `parent`?
Yes, a qgsfunction always gets a feature. By default it's invalid, wh
Hey guys!
So all I wanted to do this morning was clarify the `referenced_columns`
parameter for Python expression functions (#46161 and #46162) and add
another example function to the default template that uses a feature.
But I ended up in some confusing and conflicting documentation and
beha
