/* Emit warning formatted message on configured 'errors' stream unless mute ( */
void warnf(struct GlobalConfig *config, const char *fmt,...)
/* Emit warning formatted message on configured 'errors' stream unless mute ( */
void warnf(struct GlobalConfig *config, const char *fmt,...)
{
  va_list ap;
  va_start(ap, fmt);
  voutf(config, WARN_PREFIX, fmt, ap);
  va_end(ap);
}