为什么 ABAP 将字符串剪切为一个字符？

Question

I have this simple ABAP code:我有这个简单的 ABAP 代码：

  data foo_string.
  foo_string = |hello world { sy-uname }|.
  MESSAGE |foo: { foo_string } :-)| TYPE 'E'.

Result:结果：

foo: h :-)

Why was the string cut to one character?为什么字符串被剪成一个字符？

Answer 1

There is a typo in this line:这一行有一个错字：

wrong:错误的：

data foo_string.

correct:正确的：

data foo_string type string.