-// Prototypes
-int error(char *);
-int errors(char *, char *);
-int fatal(char *);
-int warn(char *);
-int warns(char *, char *);
-int warni(char *, unsigned);
+// Exported functions
+int error(const char *, ...);
+int warn(const char *, ...);
+int fatal(const char *);