I must admit I don't take that as a negative thing. Code that's so old had a lot of time for corner cases to be ironed out. If it's maintained properly it's pro

I must admit I don't take that as a negative thing. Code that's so old had a lot of time for corner cases to be ironed out. If it's maintained properly it's probably less buggy than any rewrite, even though fortran is less enticing than rust as a language.