No space is allowed between sd and the directory list argument.

在sd和目录列表之间不允许有空格。

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Here the process substitution runs the directory listing components and returns a list of filenames, which is in turn supplied to the argument list of the emacs command.

这里的进程替换运行目录列表组件并返回一个文件名列表，后者又提供给emacs命令的参数列表。

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For example, you can create a worker to list the contents of a directory. The -f argument names the function the worker is providing.

例如，可以创建一个worker来列出某个目录的内容。

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