在外部范围中，错误处理程序包含一个其目标设置为内部范围的补偿活动。

In the outer scope, a fault handler contains a compensate activity whose target is set to the inner scope.

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函数返回特定值(或值范围)以指明错误，且设置全局变量errno以指明问题的起因。

The function returns a specific value (or range of values) to indicate an error, and the global variable errno is set to indicate the cause of the problem.

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当已执行搜索范围设置为“当前文档”的搜索，但没有打开的文件时，通常会发生此错误。

This error generally occurs when a search has been attempted with the search scope set to Current Document but no file is open.

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