[wool_gather]

The caller can't do a global rename if they don't own the source of the function -- because it's in a library. Which is what parent meant by "reverse dependency": the library's interface is constrained by the fact that it has users.

[fsloth]

Surely if the library interface changes the users can change their own code? That's why we have versioning of libraries - so that users of the library can take intelligently new versions into use, and especially so they are aware if (and when) the interface changes.

[DagAgren]

But this is already the case for the name of the function. Semantically, named arguments are just part of the name of the function.