An analogous seprintf() would probably be a good thing to add too, where the buffer end is passed in instead of a buffer length. I would still have it return a

An analogous seprintf() would probably be a good thing to add too, where the buffer end is passed in instead of a buffer length. I would still have it return a pointer to the end of what was copied. Anyone can calculate the length if they need to, by subtracting the original pointer from the returned pointer. char *seprintf(char *str, char *end, const char *format, ...);