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

e2fsprogs/old_e2fsprogs/blkid/dev.c

@@ -82,7 +82,7 @@ void blkid_debug_dump_dev(blkid_dev dev)
 		else
 			printf("    tag: NULL\n");
 	}
-	puts("");
+	bb_putchar('\n');
 }
 #endif
 

e2fsprogs/old_e2fsprogs/blkid/read.c

@@ -436,7 +436,7 @@ static void debug_dump_dev(blkid_dev dev)
 		else
 			printf("    tag: NULL\n");
 	}
-	puts("");
+	bb_putchar('\n');
 }
 
 int main(int argc, char**argv)

e2fsprogs/old_e2fsprogs/e2fsck.c

@@ -2443,10 +2443,10 @@ static void safe_print(const char *cp, int len)
 			ch -= 128;
 		}
 		if ((ch < 32) || (ch == 0x7f)) {
-			fputc('^', stdout);
+			bb_putchar('^');
 			ch ^= 0x40; /* ^@, ^A, ^B; ^? for DEL */
 		}
-		fputc(ch, stdout);
+		bb_putchar(ch);
 	}
 }
 
@@ -2497,7 +2497,7 @@ static void expand_at_expression(e2fsck_t ctx, char ch,
 		str = _(*cpp) + 1;
 		if (*first && islower(*str)) {
 			*first = 0;
-			fputc(toupper(*str++), stdout);
+			bb_putchar(toupper(*str++));
 		}
 		print_e2fsck_message(ctx, str, pctx, *first);
 	} else
@@ -2630,7 +2630,7 @@ static void expand_percent_expression(ext2_filsys fs, char ch,
 
 	switch (ch) {
 	case '%':
-		fputc('%', stdout);
+		bb_putchar('%');
 		break;
 	case 'b':
 		printf("%u", ctx->blk);
@@ -12767,7 +12767,7 @@ static void check_if_skip(e2fsck_t ctx)
 		else
 			printf(_(" (check in %ld mounts)"), next_check);
 	}
-	fputc('\n', stdout);
+	bb_putchar('\n');
 	ext2fs_close(fs);
 	ctx->fs = NULL;
 	e2fsck_free_context(ctx);
@@ -12864,9 +12864,9 @@ int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 	       bar + (sizeof(bar) - (i+1)),
 	       spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 	if (fixed_percent == 1000)
-		fputc('|', stdout);
+		bb_putchar('|');
 	else
-		fputc(spinner[ctx->progress_pos & 3], stdout);
+		bb_putchar(spinner[ctx->progress_pos & 3]);
 	printf(" %4.1f%%  ", percent);
 	if (dpynum)
 		printf("%u\r", dpynum);

e2fsprogs/old_e2fsprogs/fsck.c

@@ -613,7 +613,7 @@ static int execute(const char *type, const char *device, const char *mntpt,
 		       mntpt ? mntpt : device);
 		for (i=0; i < argc; i++)
 			printf("%s ", argv[i]);
-		puts("");
+		bb_putchar('\n');
 	}
 
 	/* Fork and execute the correct program. */

e2fsprogs/old_e2fsprogs/lsattr.c

@@ -57,7 +57,7 @@ static void list_attributes(const char *name)
 	if (flags & OPT_PF_LONG) {
 		printf("%-28s ", name);
 		print_flags(stdout, fsflags, PFOPT_LONG);
-		puts("");
+		bb_putchar('\n');
 	} else {
 		print_flags(stdout, fsflags, 0);
 		printf(" %s\n", name);
@@ -102,7 +102,7 @@ static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
 			   (de->d_name[1] != '.' && de->d_name[2] != '\0')))) {
 				printf("\n%s:\n", path);
 				iterate_on_dir(path, lsattr_dir_proc, NULL);
-				puts("");
+				bb_putchar('\n');
 			}
 		}
 	}

e2fsprogs/old_e2fsprogs/mke2fs.c

@@ -641,7 +641,7 @@ static void show_stats(ext2_filsys fs)
 			s->s_blocks_per_group, s->s_frags_per_group,
 			s->s_inodes_per_group);
 	if (fs->group_desc_count == 1) {
-		puts("");
+		bb_putchar('\n');
 		return;
 	}
 

e2fsprogs/old_e2fsprogs/uuid/uuid_time.c

@@ -147,7 +147,7 @@ main(int argc, char **argv)
 		printf(" (random)\n");
 		break;
 	default:
-		puts("");
+		bb_putchar('\n');
 	}
 	if (type != 1) {
 		printf("Warning: not a time-based UUID, so UUID time "