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#include <u.h>
#include <libc.h>

char*
vseprint(char *buf, char *e, char *fmt, va_list args)
{
        Fmt f;

        if(e <= buf)
                return nil;
        f.runes = 0;
        f.start = buf;
        f.to = buf;
        f.stop = e - 1;
        f.flush = nil;
        f.farg = nil;
        f.nfmt = 0;
        f.args = args;
        dofmt(&f, fmt);
        *(char*)f.to = '\0';
        return f.to;
}