setvbuf
(void)setvbuf(cshin, NULL, _IOLBF, 0);
(void)setvbuf(cshout, NULL, _IOLBF, 0);
(void)setvbuf(csherr, NULL, _IOLBF, 0);
if (setvbuf(fp, NULL, _IONBF, 0)) {
int setvbuf(FILE * __restrict, char * __restrict, int, size_t);
(void)setvbuf(fp, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
(void)setvbuf(fp, buf, buf ? _IOFBF : _IONBF, (size_t)size);
return setvbuf(fp, NULL, _IOLBF, (size_t)0);
(void)setvbuf(_cursesi_screen->outfd, NULL, _IOLBF, 0);
(void)setvbuf(screen->outfd, screen->stdbuf, _IOFBF, screen->len);
(void)setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
(void)setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
setvbuf(stderr, NULL, _IOFBF, 0); /* XXX */
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(ofp, NULL, opts.btype, opts.asize);
setvbuf(ifp, NULL, opts.btype, opts.asize);
setvbuf(ofp, r ? abuf : NULL,
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
(void)setvbuf(stdout, NULL, _IOLBF, 0);
(void)setvbuf(stderr, NULL, _IOLBF, 0);
setvbuf(ttyout, NULL, _IOLBF, 0);
setvbuf(stdout, NULL, _IOLBF, 0);
if (setvbuf(stdout, NULL, _IONBF, 0) != 0)
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(opts.debug_file, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IOLBF, 0);
c = setvbuf(stdout, NULL, _IOLBF, 0);
c = setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
#define setlinebuf(s) setvbuf(s, NULL, _IOLBF, 0)
setvbuf(stdout, msgbuf, _IOFBF, sizeof msgbuf);
setvbuf(stdout, NULL, _IOLBF, 0);
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);