How to get the name of a variable instead of its value in plpgsql?

I write a lot of debugging code in plpgsql along the lines:

RAISE NOTICE 'var1 = %', var1;

(there can be more than one variable to print out).

Is it possible to avoid having to repeat the variable var1 every time by writing a PostgreSQL function (say myprint) so that

SELECT myprint(var1);

will generate the same output as RAISE NOTICE 'var1 = %', var1;?

The problem is that I know how to get the value of var1 in the function but I don't know how to get the name var1. Is there some call-stack or context magic in plpgsql that can provide the name of the variable passed to myprint?

(This is with PostgreSQL 12.1 or later)