introduce bb_putchar(). saves ~1800 on uclibc (less on glibc).

util-linux/dmesg.c

@@ -38,12 +38,12 @@ int dmesg_main(int argc, char **argv)
 
 			for (in = 0; in<len;) {
 				if (last == '\n' && buf[in] == '<') in += 3;
-				else putchar(last = buf[in++]);
+				else bb_putchar(last = buf[in++]);
 			}
-			if (last != '\n') putchar('\n');
+			if (last != '\n') bb_putchar('\n');
 		} else {
 			write(1,buf,len);
-			if (len && buf[len-1]!='\n') putchar('\n');
+			if (len && buf[len-1]!='\n') bb_putchar('\n');
 		}
 
 		if (ENABLE_FEATURE_CLEAN_UP) free(buf);

util-linux/fdisk.c

@@ -892,7 +892,7 @@ list_types(const char *const *sys)
 			next = ++done;
 		}
 	} while (done < last[0]);
-	putchar('\n');
+	bb_putchar('\n');
 }
 #endif /* FEATURE_FDISK_WRITABLE */
 
@@ -2473,13 +2473,13 @@ print_buffer(char *pbuffer)
 			printf("0x%03X:", i);
 		printf(" %02X", (unsigned char) pbuffer[i]);
 		if (l == MAX_PER_LINE - 1) {
-			puts("");
+			bb_putchar('\n');
 			l = -1;
 		}
 	}
 	if (l > 0)
-		puts("");
-	puts("");
+		bb_putchar('\n');
+	bb_putchar('\n');
 }
 
 static void
@@ -2527,7 +2527,7 @@ xselect(void)
 	char c;
 
 	while (1) {
-		putchar('\n');
+		bb_putchar('\n');
 		c = tolower(read_nonempty("Expert command (m for help): "));
 		switch (c) {
 		case 'a':
@@ -2588,7 +2588,7 @@ xselect(void)
 			break;
 		case 'q':
 			close(fd);
-			puts("");
+			bb_putchar('\n');
 			exit(0);
 		case 'r':
 			return;
@@ -2867,7 +2867,7 @@ int fdisk_main(int argc, char **argv)
 
 	while (1) {
 		int c;
-		putchar('\n');
+		bb_putchar('\n');
 		c = tolower(read_nonempty("Command (m for help): "));
 		switch (c) {
 		case 'a':
@@ -2947,7 +2947,7 @@ int fdisk_main(int argc, char **argv)
 			break;
 		case 'q':
 			close(fd);
-			puts("");
+			bb_putchar('\n');
 			return 0;
 		case 's':
 #if ENABLE_FEATURE_SUN_LABEL

util-linux/fdisk_osf.c

@@ -394,7 +394,7 @@ bsd_select(void)
 #endif
 
 	while (1) {
-		putchar('\n');
+		bb_putchar('\n');
 		switch (tolower(read_nonempty("BSD disklabel command (m for help): "))) {
 		case 'd':
 			xbsd_delete_part();
@@ -521,7 +521,7 @@ xbsd_print_disklabel(int show_all)
 			printf(" ecc");
 		if (lp->d_flags & BSD_D_BADSECT)
 			printf(" badsect");
-		puts("");
+		bb_putchar('\n');
 		/* On various machines the fields of *lp are short/int/long */
 		/* In order to avoid problems, we cast them all to long. */
 		printf("bytes/sector: %ld\n", (long) lp->d_secsize);
@@ -588,7 +588,7 @@ xbsd_print_disklabel(int show_all)
 				printf("%22.22s", "");
 				break;
 			}
-			puts("");
+			bb_putchar('\n');
 		}
 	}
 }

util-linux/fsck_minix.c

@@ -307,12 +307,12 @@ static int ask(const char *string, int def)
 	int c;
 
 	if (!repair) {
-		puts("");
+		bb_putchar('\n');
 		errors_uncorrected = 1;
 		return 0;
 	}
 	if (automatic) {
-		puts("");
+		bb_putchar('\n');
 		if (!def)
 			errors_uncorrected = 1;
 		return def;

util-linux/getopt.c

@@ -195,7 +195,7 @@ static int generate_output(char **argv, int argc, const char *optstr, const stru
 		printf(" --");
 		while (optind < argc)
 			printf(" %s", normalize(argv[optind++]));
-		puts("");
+		bb_putchar('\n');
 	}
 	return exit_code;
 }

util-linux/ipcs.c

@@ -555,7 +555,7 @@ static void print_sem(int semid)
 		}
 		printf("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
 	}
-	puts("");
+	bb_putchar('\n');
 }
 
 int ipcs_main(int argc, char **argv);
@@ -603,19 +603,19 @@ int ipcs_main(int argc, char **argv)
 
 	if (!(flags & (flag_shm | flag_msg | flag_sem)))
 		flags |= flag_msg | flag_shm | flag_sem;
-	puts("");
+	bb_putchar('\n');
 
 	if (flags & flag_shm) {
 		do_shm();
-		puts("");
+		bb_putchar('\n');
 	}
 	if (flags & flag_sem) {
 		do_sem();
-		puts("");
+		bb_putchar('\n');
 	}
 	if (flags & flag_msg) {
 		do_msg();
-		puts("");
+		bb_putchar('\n');
 	}
 	fflush_stdout_and_exit(0);
 }

util-linux/more.c

@@ -40,7 +40,7 @@ struct globals {
 
 static void gotsig(int sig)
 {
-	putchar('\n');
+	bb_putchar('\n');
 	setTermSettings(cin_fileno, &initial_settings);
 	exit(EXIT_FAILURE);
 }