From e4b101d2ef33c97085c1912930066435d0e2ad2f Mon Sep 17 00:00:00 2001
From: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Wed, 15 Apr 2020 10:32:13 +0800
Subject: [PATCH] system/cu: Echo NULL char too

since zero is also a valid character

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
---
 system/cu/cu_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/system/cu/cu_main.c b/system/cu/cu_main.c
index 1e0fc035f..469063db2 100644
--- a/system/cu/cu_main.c
+++ b/system/cu/cu_main.c
@@ -384,14 +384,14 @@ int main(int argc, FAR char *argv[])
     {
       int ch = getc(stdin);
 
-      if (nobreak == 1)
+      if (ch < 0)
         {
-          write(g_cu.outfd, &ch, 1);
           continue;
         }
 
-      if (ch <= 0)
+      if (nobreak == 1)
         {
+          write(g_cu.outfd, &ch, 1);
           continue;
         }