mkewuid 脚本函数为命令行上提供的每个字符串输出一个记录行。
The mkewuid script function will output a record line for each string of characters provided on the command line.
该函数获得与传递的错误有关的字符串，并输出这些字符串。
This obtains the string associated with the error that is passed in and prints it.
如果使用CODEUNITS来获取字符的长度，则用作字符串函数输入的CODEUNITS的不同会导致输出的不同。
If you take the length of a character in CODEUNITS, the output differs according to the CODEUNITS used as inputs to the string function.
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