It's clearer, especially in scripts, to use the '[[: space:]]' command class.

使用' [[：space：]] '命令类(特别是在脚本中)会更清楚。

youdao

It's clearer, especially in scripts, to use the '[[: space:]]' command class.

使用' [[：space：]] '命令类(特别是在脚本中)会更清楚。

youdao