245 	FILE *f1, *f2;  in diffreg()  local
250 	f1 = f2 = NULL;  in diffreg()
304 		f1 = fopen(_PATH_DEVNULL, "r");  in diffreg()
307 			if ((f1 = opentemp(file1)) == NULL ||  in diffreg()
308 			    fstat(fileno(f1), &stb1) == -1) {  in diffreg()
315 			f1 = stdin;  in diffreg()
317 			f1 = fopen(file1, "r");  in diffreg()
319 	if (f1 == NULL) {  in diffreg()
354 		if (caph_rights_limit(fileno(f1), &rights_ro) < 0)  in diffreg()
358 		if (fileno(f1) == STDIN_FILENO || fileno(f2) == STDIN_FILENO) {  in diffreg()
373 	switch (files_differ(f1, f2, flags)) {  in diffreg()
394 		(void)prepare(0, f1, stb1.st_size, flags);  in diffreg()
396 	} else if (!asciifile(f1) || !asciifile(f2) ||  in diffreg()
397 		    !prepare(0, f1, stb1.st_size, flags) ||  in diffreg()
435 	check(f1, f2, flags);  in diffreg()
436 	output(file1, f1, file2, f2, flags);  in diffreg()
446 	if (f1 != NULL)  in diffreg()
447 		fclose(f1);  in diffreg()
460 files_differ(FILE *f1, FILE *f2, int flags)  in files_differ()  argument
473 		i = fread(buf1, 1, sizeof(buf1), f1);  in files_differ()
475 		if ((!i && ferror(f1)) || (!j && ferror(f2)))  in files_differ()
707 check(FILE *f1, FILE *f2, int flags)  in check()  argument
712 	rewind(f1);  in check()
720 			ixold[i] = ctold += skipline(f1);  in check()
729 				c = getc(f1);  in check()
748 						if ((c = getc(f1)) == '\n') {  in check()
751 							ungetc(c, f1);  in check()
769 					} while (isspace(c = getc(f1)));  in check()
777 						c = getc(f1);  in check()
789 						ctold += skipline(f1);  in check()
801 				if ((c = getc(f1)) != (d = getc(f2))) {  in check()
805 						ctold += skipline(f1);  in check()
884 output(char *file1, FILE *f1, char *file2, FILE *f2, int flags)  in output()  argument
888 	rewind(f1);  in output()
897 					nc = fetch(ixold, i0, i0, f1, '\0', 1, flags);  in output()
921 					change(file1, f1, file2, f2, i, i, j, j, &flags);  in output()
924 					change(file1, f1, file2, f2, i, i, j + 1, j, &flags);  in output()
929 					change(file1, f1, file2, f2, i + 1, i, j, j, &flags);  in output()
933 				change(file1, f1, file2, f2, i0, i1, j0, j1, &flags);  in output()
945 			change(file1, f1, file2, f2, i1, i0, j1, j0, &flags);  in output()
949 		change(file1, f1, file2, f2, 1, 0, 1, len[1], &flags);  in output()
953 			if ((c = getc(f1)) == EOF)  in output()
961 			dump_context_vec(f1, f2, flags);  in output()
963 			dump_unified_vec(f1, f2, flags);  in output()
1029 change(char *file1, FILE *f1, char *file2, FILE *f2, int a, int b, int c, int d,  in change()  argument
1051 				line = preadline(fileno(f1),  in change()
1105 				dump_context_vec(f1, f2, *pflags);  in change()
1107 				dump_unified_vec(f1, f2, *pflags);  in change()
1146 		curpos = ftell(f1);  in change()
1150 			printf("%c", getc(f1));  in change()
1156 					fetch(ixold, a, b, f1, '<', 1, *pflags);  in change()
1178 			nc = fetch(ixold, a, b, f1, '\0', 1, *pflags);  in change()
1193 		fetch(ixold, a, b, f1, '<', 1, *pflags);  in change()
1468 dump_context_vec(FILE *f1, FILE *f2, int flags)  in dump_context_vec()  argument
1486 		f = match_function(ixold, cvp->a - 1, f1);  in dump_context_vec()
1519 				fetch(ixold, lowa, b, f1, ' ', 0, flags);  in dump_context_vec()
1521 				fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);  in dump_context_vec()
1522 				fetch(ixold, a, b, f1,  in dump_context_vec()
1528 		fetch(ixold, b + 1, upb, f1, ' ', 0, flags);  in dump_context_vec()
1571 dump_unified_vec(FILE *f1, FILE *f2, int flags)  in dump_unified_vec()  argument
1593 		f = match_function(ixold, cvp->a - 1, f1);  in dump_unified_vec()
1621 			fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);  in dump_unified_vec()
1622 			fetch(ixold, a, b, f1, '-', 0, flags);  in dump_unified_vec()
1626 			fetch(ixold, lowa, a - 1, f1, ' ', 0, flags);  in dump_unified_vec()
1627 			fetch(ixold, a, b, f1, '-', 0, flags);  in dump_unified_vec()