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uemacs/usage.c

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#include "usage.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
static void report(const char* prefix, const char *err, va_list params)
{
char msg[4096];
vsnprintf(msg, sizeof(msg), err, params);
fprintf(stderr, "%s%s\n", prefix, msg);
}
void die(const char* err, ...)
{
va_list params;
va_start(params, err);
report("fatal: ", err, params);
va_end(params);
exit(128);
}