Here's a question that interests me: why don't I havea standard C version of my Python warn() function ? The Python version shows up in mostprograms I write, but in my C programs I generally directly fprintf() errors to stderr, instead of having a utility function for it.

Part of the reason is that a C version of warn() really calls for adifferent and more complicated set of arguments. Instead of a singlestring, the natural C-ish approach is