It might be worth checking out testL from Win32::LongPath. It's not an exact syntax match to the -X tests, but it does provide an alternative method for those tests and provides support for any paths in Windows (including those that are longer than 255 characters in length and those using Unicode characters - both of which probably won't work with the -X tests).

If you find testL to be an acceptable alternative to the -X tests, one possible approach to get your code to work on Linux and Windows is to write subroutines to replace the -X tests and in those subroutines to check the OS type (Linux or Windows) to determine if it will use the -X tests (for Linux) or testL (for Windows). I'm not arguing that this is a "good" approach, but just wanted to toss out the one idea that I had on the topic.

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