为什么UltraEdit的“自动检测UNICODE”没起作用？

因为你提供的文件中，没有什么东西能让UE发觉它是UNICODE/UTF-8文件。

UE是这样检测的：

UltraEdit attempts to detect the file type when the file is loaded.  It will look for the FFFE marker for Unicode files.  For UTF-8 it will look for one of the following three occurences:

1) File marker FE, FE,FE.

1) String occurences "charset=utf-8"

1) It will interrogate the file and look for the occurrence of valid UTF-8 multi-byte characters

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如果UE没有检测到，我们能不能告诉UE当前文件是UNICODE的？ 答案是：不能！